GM's LS engines are the hottest thing to hit the scene since Chevy debuted the first smallblock back in 1955. 3L 2012 Colorado, I think they are 243 castings same as LS6, but does not have the sodium filled light weight valves. We offer two styles of Engine Packages: a Drop Out Package or a Stand Alone Package. here's a little tip. These studs were installed on an naturally aspirated heads/cam LS1. Our high end machine work applied to GM's best cathedral head represents a phenomenal value to enthusiasts and serious competitors alike. 2l cam camshaft valve spring heads high flow ported cnc throttle body drive by wire dbw rectangle gen 4 gen 3 90 mm show contact info 0823 243 317 corvette c5 c6 trans am firebird camaro ss ctsv tbss cts-v fuel injectors. No more guess work. It features either a cast iron or aluminum engine with cast aluminum heads. 6L 3v engines may require the use of a Throttle Body Spacer(Sniper Part # 860006) to allow full range of motion for the throttle cable bracket. And 500hp out of a mild cam, stock L92s aint gonna happen with an Lq4. This is correct, for a budget build you can get an lq4 or lq9 from a truck, go on craiglist or salvage yard and find a set of 243 heads (roughly around 350 for a set), these heads are the same heads used on the ls6 (2001 corvette z06, 2004-2007 CTS-V) as well as an ls6 intake these will pretty much put you into a ls6 that's a 6. 2 lb-ft at 5,000 rpm and 506. a "cam only" LQ4. I'm still content with what I paid for it. 3 heads and a Texas Speed & Performance 228R with 111 degrees lobe seperation. Title says it all really. 625 valves, angle plugs. 79 in the 1/4 in my 3300 lb Cutlass. 2000 Camaro Z28 with a 6. 0L produced 401 hp at 5,200 rpm and 432 lb-ft of torque at 4,400 rpm. 0L LQ4 engine block, add a little elbow grease, and build ourselves a nice budget-friendly horsepower block. My cousin had an LQ4 with patriot ported 243 heads and an MS3 and it drove great behind a T56 with stock 3. Brodix 6 Bolt LS3 Cylinder heads CNC ported by Late Model Engines. Steering has been redone. I ended up trading the parts for a complete LQ4 6. For a cam I would look at something like the TSP TQv2 or MS3. The 243 heads are a lot smoother than the 799 heads which are grainier because of the sandcasting. Related Products AFR LSX 245 Mongoose Cylinder Heads - 73cc $2,774. LH8/LH9 heads and a LS6 cam on a 4. 3? 07 on 5. The cam was tamed with a set of 850-16 hydraulic roller lifters and 7. 300 obo cash only no trades will not separate for more info call calls only no emails. Cylinder Heads & Camshaft Packages Add 100+ horsepower to your GM LS or Gen 5 LT engine with a Texas Speed & Performance cylinder heads and camshaft package! Our packages will include cathedral port, square port, and rectangular port cylinder heads to accommodate LS1, LS2, LS3, L99, LS6, LS7, LSA, LQ4, LQ9, L83, L86, LT1, and more!. GM Performance Parts for the lowest prices on the web. Late Model Engines, LME, specializes in high performance LS and new LT engine development. 0L 500HP engine using this combination. a "cam only" LQ4. I would do a set of ported 243 heads from either AI, TEA or TSP in that order. 6 mm) bore and 3. Buy General Motors 12589227 6. The computer and PROM chip is included. 3, LS1, LS6, LS2, LQ4/9) to us for porting. Peak valve lift is probably going to be no more than about half an inch with a typical street cam, so a set of heads that claims huge airflow numbers at extreme valve lifts would not be your best choice. The Vortec 5. LS2 heads had standard valves. I've done quite a bit of research on LSx swaps (over 2 years research to be exact). 0L truck), and 799 (as a stand-in for the hallowed 243) heads. order soon as cams are blasting off the shelves! all cathedral port cams: (reg $445) $369. I have a holley 750 on it also with a victor jr. That's the same volume as stock LS3 heads, which maintains the stock compression ratio. I then ran it to see how it'd run. New guy here trying to get a H/C motor to run decent. The LS2 is the 6. No and we were on 243 heads. It is a bored version of the Vortec 5300. What does the motor make? 250hp? To get the same power time to pony up for good heads, cam, valvetrain, etc. Ai System Matched GM LSx Heads & Cam Kits Over the years we've noted that the vast majority of guys are looking for the same thing - a reliable hot rod ideally suited for the street, capable at the track, and striking an ideal compromise between longevity and power gains. How to turbo-charge an iron block LS stroker to make 1000 horsepower with a single 88mm turbo and air-to-air intercooler. Patriot Performance Ported Heads for your 1999-2007 Chevy Truck / SUV at RPM Outlet. Depending on the application, the L92/LS3/LS7 cylinder head can support well over 1000+ horsepower. The idea was to flow and measure each. 5 will include aftermarket 2. The LS6 had sodium filled exhaust and hollow intake valves. To go along with the heads, we picked up an aftermarket cam on the forums for $140. LS2 heads had standard valves. 2L L92 truck engines. If this is your first visit, be sure to check out the FAQ by clicking the link above. 8 average mpg mixed driving. At the rate he gets stuff done we should have the dyno numbers in oh about 3 years lol If I was to do it I would be cheap and just mill the 317's, run a truck intake, and go with some advance ground into the cam. I would Google, I'm sure. My local shop said to just sell them for scrap. That is with 243 heads and a cam equivalent to the LS6. What are some favorite street cams for a 05 GTO LS2 M6 (Manual), 243 heads added PRC dual springs (non-ported), Stock LS2 intake and TB, 1 and 7/8 Kooks headers (no cats), Flowmaster exhaust, and dyno tune (of course). This cam can easily be daily driven with zero issues once tuned properly. Same thing with the LS3 heads the LS3 head is SPM and the L92's are sand castings. Free Same Day Store Pickup. 575 stainless steel valve package. oversized is the safe maximum. For this type of application, you want a set of heads with stock to moderately larger intake runner volumes to keep air velocity high. basically they took a bone stock lq4 installed a set of the new L92 heads from the new 6. Everything you ever wanted to know about the LQ4/LQ9 engines! OP PONTIAC SLEEPER, theturboforums. heads and cam would be the way to go. No a LS6 cam swap would not make sense and here is why 1) a LS6 cam will add best case scenario about 30-40hp to a Lq4 with 243s. The main reason I did the swap was cost. 650 lift beehive springs. If our LQ4 had been a '01-'04 version, the baseline power would have been higher due to the slightly better timing figures. Another option for use with aluminum heads would be a shim style like the Fel-Pro Embossed Ring Head Gasket. basically they took a bone stock lq4 installed a set of the new L92 heads from the new 6. Engine is a 6. expect to pay $300-450 for a good useable set of the standards. This was the cam Texas Speed recommended for my build. 2902 in the 1/8th. Chad was able to pinpoint the leak showing it was a manufacturers defect, something that could not have been done by a lesser shop, and I would not received a pair of new heads. This engine is in a 91 trans am and the old setup was a mostly stock 5. Trick Flow products perform as advertised and exceed customer's expectations for performance and value. The engine made more than 400 lb-ft from 3,100 through 6,700 rpm,. 6 mm) bore and 3. 00 This harness replaces the factory GM crate Ram Jet engine harness and MEFI ECM. Even though our stock heads flow very close to them(or the same), the 243 heads are supposed to have a quench pad in the design and offer better compression. Bolting a set of LS6 heads to the iron block, the LQ4 was born. Camshafts. I plan on getting some headers and I've read up a little and heard the heads on this motor arent the greatest, so i was gonna look into some ls3 heads, i wanna look into a cam to but i dont know nearly enough about them to just go buy one, it's still gonna be one of my daily drivers so i dont want. the goat heads are the same thing that comes on the lq4 truck motor but the the gto heads have smaller cc's to give a little more compressionbut basicly the 799 heads and the 243 ls6 heads flow about the same with the difference the ls6 243 casting heads have sodium filled valves and the 317 heads that come on the lq4 truck motors have about the same flow as both the 799 and 243 heads but. 97 L (364 cu in) from a 4. this lifter broke at the base causing that piece to get lodged between the roller and the cam lobe, destroying both. This is correct, for a budget build you can get an lq4 or lq9 from a truck, go on craiglist or salvage yard and find a set of 243 heads (roughly around 350 for a set), these heads are the same heads used on the ls6 (2001 corvette z06, 2004-2007 CTS-V) as well as an ls6 intake these will pretty much put you into a ls6 that's a 6. Chris Frank heads and a self ported SV 4500 with spacer for added plenum. 5 lb-ft compared with the XR269HR-14, producing a peak 478. HIGH PERFORMANCE GM LS EDITION Within these pages you’ll find our best selling GM LS Parts for Professional Engine Builders. 5 heads would work really well. I had a 234/243 cam which sounded great at idle made great peak power. 0L LQ4 heads Test 1 - Best Power Baseline from Part I (LS6 cam test) Test 2 - Add 5. They are equivalent to the 243 LS2 head minus the sodium filled Valves. CYLINDER HEAD REPAIR. Chris Frank heads and a self ported SV 4500 with spacer for added plenum. For the record, the LQ4 and LQ9 had the same 317 heads (which have the same ports & valves as 243 heads, but larger chambers). One big difference in between the 1999/2000 trucks versus 2001 and after is the cam. 0 bottom end stock 243 heads with PAC. A custom spec'd cam would be your best bet if you were really concerned with hitting a number. 0 L (≈366 cu in) from 101. Also Shawn's (SamTech) been busy to mill my heads again Small stuff, geometry is spot on with Eric's Ls3 rocker arm scheme. 0 L LS engine that was best known in the Corvette, CTS-V, and GTO of just a few years ago. I do spray water/meth at 9psi on pump 92 octane and ramp timing down around 11º from 4800 to 5200 at peak torque area. 35-inch pushrods. If your not too familiar with builds the lq4 l92 build is a tough one to start with. If you do not see what you're looking for, or if you have any questions; give us a call at 330-634-2155 or send us an email at [email protected] 5:1, trailblazer ss intake/nnbs 4. 3 trying to find out what heads we have. Cam - custom spec by Patrick G - a "baby" cam by his words. HAWKS 450rwhp Heads, Cam, Intake Kit - FREE SHIPPING IN THE US 48 STATES We based this kit on years of testing, tuning, and using different camshafts, cylinder heads, and intake combos. 3 trying to find out what heads we have. I would do a set of ported 243 heads from either AI, TEA or TSP in that order. i agree that boost is GREAT! but dont ever overlook a solid hci package. But there is no replacement for displacement, which is the reason the LS2 was rated at a higher horsepower. At the rate he gets stuff done we should have the dyno numbers in oh about 3 years lol If I was to do it I would be cheap and just mill the 317's, run a truck intake, and go with some advance ground into the cam. Pulled the trigger late last August and picked. 7L LS1 aluminum heads w/ truck intake, shorty headers. 0L - Stock internals (rebuilt) - 243 heads - BTR LS3 Stage 1 cam - 221/228 duration @. I'm doing the same with my 6. The aluminum head LQ4/LQ9 had a 196/207 cam like the F body cars. The heads were milled from Dart's 68 cc chamber volume to 65 cc; when paired with the. i know they can make more than 5. TH400 and 8" converter. open for advice this is in a 3,950 lbs 83 c-10 shortbed. GM Engine & Exhaust Performance - The Difference Between All The LS Heads - Ok guys, I'm always hearing different opinions about what the difference is between all the LS heads. Bore looks great. VW 71 4 speed manual (147) Beetle IRS transaxle VW 79 4 speed manual (147) Bus IRS transaxle. That's the same volume as stock LS3 heads, which maintains the stock compression ratio. In order to extract some extra power, we are going to swap the heads and put in a more aggressive cam. I'm doing the same with my 6. We have some of the lowest prices on Chevrolet Performance Parts, Chevrolet Performance Engines, and Chevrolet Performance Transmissions. Upgrading to the more advanced and better flowing L92 cylinder heads raises compression from 9. The aluminum head LQ4/LQ9 had a 196/207 cam like the F body cars. As for 07+ motor swaps, they may be less common, but are becoming a lot more affordable. tried to post the link last month but wasnt working so ill just relay what i can from the second article. The LQ4 was designed to provide great durability. They are equivalent to the 243 LS2 head minus the sodium filled Valves. I want the most out of the combo and don't mind fly cutting the pistons. We can also supply you with a matching camshaft and intake. Our stage 1 porting service will include the re-use of the stock vales. What does the motor make? 250hp? To get the same power time to pony up for good heads, cam, valvetrain, etc. 3 intake, theres truck headers. 030 243 heads at Champion Motors. 5 psi, so it can theoretically make more power. Unported LS9 Cylinder Heads. They don't benifit the same on rectangle port heads as they do on canthedral ports. To further the gains offered by the cam upgrade, we decided to replace the factory 317 heads on the 6. 's parts are designed, intended, advertised and sold exclusively for installation on vehicles in compliance with state and federal law. We are one of the nation's leading supplier of remanufactured, rebuilt and used engines, transmissions, differentials, transfer cases & cylinder heads. Why buy a set of heads with the wrong parts when we can build you a custom ported set of heads complete, ready to bolt on with the right parts. No and we were on 243 heads. But there is no replacement for displacement, which is the reason the LS2 was rated at a higher horsepower. 7-1 rocker ratio mc315271 hyd 2 204 218 - -. Will probably hit it with some nitrous but no more than a 150. check this out. This is correct, for a budget build you can get an lq4 or lq9 from a truck, go on craiglist or salvage yard and find a set of 243 heads (roughly around 350 for a set), these heads are the same heads used on the ls6 (2001 corvette z06, 2004-2007 CTS-V) as well as an ls6 intake these will pretty much put you into a ls6 that's a 6. Conclusion:. EQ is a leading supplier of new, reclaimed and remanufactured engine parts. The aluminum blocks are not as strong as the iron block LQ4 and LQ9. 2's in the 1/8th. Trick Flow products perform as advertised and exceed customer's expectations for performance and value. oversized is the safe maximum. 0 bottom end stock 243 heads with PAC. Dart 225 heads fully worked by PMFL, FTI StreetSweeper cam 236/240. We offer two styles of Engine Packages: a Drop Out Package or a Stand Alone Package. On Flathead Ford V8 engines, anytime you’re using aluminum cylinder heads we recommend using a copper head gasket like this Flathead Big Bore Gasket for 1939 to 1948 engines, or the Best Gasket Flathead Big Bore, for 1949 to 1953 engines. Be careful about going to radical due to piston to valve clearance. 0 tear-down and reassembly questions May 5th, 2012, 03:51 AM I know nothing about the LSx engines, but in a traditional small block or big block, I'm from the school of thought that says if you change the rod bolts, you re-size the rods - period. 0 Head Gasket For LS Series Engines: Head - Amazon. The 243 heads are a lot smoother than the 799 heads which are grainier because of the sandcasting. I have been playing with close to 12 different cams in the desktop dyno program and 106/102 gave the best numbers without falling on its face after 4500 the other cam that looked good is a 108/102 oval track cam also grind 30121101 which is 2000-6500. With only mild porting, even popular factory casting cylinder heads like GM's 243 LS6 or 823 LS3 castings can support an engine greater than 400 cubic inches with ease. GM's LS engines are the hottest thing to hit the scene since Chevy debuted the first smallblock back in 1955. 300 obo cash only no trades will not separate for more info call calls only no emails. All Listings All Listings Buy It Now Auctions Only Fixed Price. 0 mm) stroke. I personally got an LQ4 (6. The 1997-1998 LS1 blocks had thin cylinder sleeves. It is way too small for an LQ4 IMO. All Gen III engines have aluminum heads except for the '99 LQ4 engines that were equipped with iron heads. Race weight is around 3700 so I think it should be pretty easy to do at your 2500 lb weight. The upper sprocket was secured using three ARP cam bolts (PN 134-1003, $8). This engine is in a 91 trans am and the old setup was a mostly stock 5. Before you get all up in arms about how the 317 heads flow like 243 heads and the small-valve 706 heads would be a step-down, let's take a look at the facts. Chad was able to pinpoint the leak showing it was a manufacturers defect, something that could not have been done by a lesser shop, and I would not received a pair of new heads. 0 Head Gasket For LS Series Engines: Head - Amazon. CYLINDER HEAD REPAIR. The LSx cathedral port style heads come standard with Dart's famous high flowing "as cast" intake runners, fast burn combustion chambers and efficient exhaust ports. 7 cc- LS1, 64. 3, but it's worth it. 02 inch stainless valves can get you into the 500 to 600 horsepower range with a nice cam. Our stage 1 porting service will include the re-use of the stock vales. This video features our Tick Performance Street Heat Stage 2 Camshaft for LS1 & LS6 Engines in an LQ4 (370ci) with Ported 243 Heads and a Stock LS6 Intake. 82 60 ft and ran a best of 8. Help me pick a cam- Lq4 build (1 2 3). While it was tempting to toss on a set of factory LS3 heads and call it a day, we decided to port the already decent 317 truck heads. I'm gonna buy and install an lq4 one of my buddies is gonna sell to me, its from a 99' 2500hd. I came across a lot about running thinner gaskets or milling heads to raise compression on corvettes for more per. The stock heads and oil pan have never been off. 0 tear-down and reassembly questions May 5th, 2012, 03:51 AM I know nothing about the LSx engines, but in a traditional small block or big block, I'm from the school of thought that says if you change the rod bolts, you re-size the rods - period. The engine is otherwise planned to be. I say get a cam/springs/pushrod package and a good converter for it and go have fun. Title says it all really. 5 will include aftermarket 2. VW 71 4 speed manual (147) Beetle IRS transaxle VW 79 4 speed manual (147) Bus IRS transaxle. Crank-triggered optical distributor. High performance cylinder head and billet intake manifold manufacturer for LS, HEMI, Small and Big Block Chevy platforms. Yes' milled heads will help raise compression, but it also makes your ptv clearance smaller so you would have to considered that when specing a cam out. Im going to get the Powerbyace kit first and go from that point. The easiest way to ID the LS heads is the 3 digit casting number on the spark plug side of the head. The LS2 was introduced as the Corvette's new base engine for the 2005 model year. Also Shawn's (SamTech) been busy to mill my heads again Small stuff, geometry is spot on with Eric's Ls3 rocker arm scheme. com FREE DELIVERY possible on eligible purchases. 12556743 – LS Small Block V8 1999 325, 5. How to turbo-charge an iron block LS stroker to make 1000 horsepower with a single 88mm turbo and air-to-air intercooler. All blocks use a cross-bolted six-bolt main cap. 3 with the TBSS intake, a 224/228 TSP cam, and stuffing some 4. The price listed is for you sending your cathedral port cylinder heads (4. Jeep JK LS Engine Swaps 2007-2016. The 64cc chambers of the 799/243 heads would increase the static compression and certainly help the power production of the cathedral port heads, but we liked matching the compression ratio as best we could for this test. I plan on getting a set of 799/243 heads to bump up compression a lil bit. 900" to accommodate intake valve clearance. Upgrade your stock LS3 or L92 engine to the best performing, cast in the US, cylinder head on the market! Available in bore sizes from 3. 0l Ly6 Vortec Gen Iv Vin "k" Engine Rebuild Kit. The early LQ4 combinations were run with the weak LM7 cam, but later versions (past 2000) received the upgraded LQ9 cam profile. Ford Classifieds. New guy here trying to get a H/C motor to run decent. 020 pistons Compstar rods LS3 forged crank Arp main studs Block was decked, line honed Performance specialties custom turbo cam Ls7 lifters Moroso oilpan with remote oil filter Meling high volume oil pump Fuel : FIC 2000cc injectors In tank. Completely different intake is used on L92/LS3 heads. I would Google, I'm sure. All are SPM castings. The stock heads, intake manifold, and 78mm throttle body just won't flow enough air to make much more HP natural aspirated. The LS2 is the 6. Run on the dyno in stock trim with the 317 heads, stock LQ4 cam and truck intake, the 6. 0 tear-down and reassembly questions May 5th, 2012, 03:51 AM I know nothing about the LSx engines, but in a traditional small block or big block, I'm from the school of thought that says if you change the rod bolts, you re-size the rods - period. LS6/LS2 head casting 243's came on the C5Z06 and the LS2 GTO. trailblazer LS 5. 0l Ly6 Vortec Gen Iv Vin "k" Engine Rebuild Kit. Tore down the outside of the newest 6. oversized is the safe maximum. Got a LQ9 (flat top motor) got a set of 243's off a TBSS. They said that with this combo 500 hp would be very achievable. if your going turbo the 317's are what you want where as for na builds the 243 is the best stock head. 8 pistons in it then retuning it But I may be trading my centerlines for a LQ4 this weekend so if that happens the heads will ride on top on a 370!. It will fit any LS engine with cylinder bores of 4. To purchase any of the GM Cylinder Heads below, click its Add To Cart button. My cousin had an LQ4 with patriot ported 243 heads and an MS3 and it drove great behind a T56 with stock 3. Topping this modified sort block was a set of Stage 2, CNC-ported 243 (LS2) heads from Total Engine Airflow. for instance, 100% stock lq4, with a magnacharger on it at 5 psi makes around 550 flywheel. That is with 243 heads and a cam equivalent to the LS6. This is for a Pair of Bare 3917291 Heads, (GM Part Number 3917291, GM Group Number 0. I picked up a set of 243 heads, and plan to use long tube headers, and a tune by black bear or Nelson. 0L LQ4 engine block, add a little elbow grease, and build ourselves a nice budget-friendly horsepower block. heads and cam would be the way to go. The LQ4 featured cathedral-port heads that offered peak intake flow numbers near 245 cfm. This engine is in a 91 trans am and the old setup was a mostly stock 5. I plan on getting some headers and I've read up a little and heard the heads on this motor arent the greatest, so i was gonna look into some ls3 heads, i wanna look into a cam to but i dont know nearly enough about them to just go buy one, it's still gonna be one of my daily drivers so i dont want. A Look into LS Cylinder Heads There are a wide variety of OE, original equipment GM LS cylinder heads that flow excellent numbers and perform right from the production line. No matter what you're driving, we have the right Ls1 Cylinder Heads for your automobile Quality Auto Parts, New, Used and Recycled Auto Parts For Sale. Escalade EXT. Generation III Internal Engine - How much to you gain putting 243 heads on a lq4 - I don't know if it is even worth it but I am going to change the cam in my 2007 lq4 and was wondering if it was worth putting 243 heads on. CNC cylinder head porting services. Bore looks great. No I don't mean harder plugs, competition coils, lumenition etc. The CNC-ported LS3 head features 276cc intake runners and 92cc exhaust ports, along with a combustion chamber volume of about 68. All blocks use a cross-bolted six-bolt main cap. Waiting to hear from Waterthunder about cam and spring selection. From F-body to Corvette, Sierra to Silverado, G8 to GTO, we carry everything for making power with your LS or Gen V Ride!. With stock 243 heads and a big cam, plus headers, and FAST92, my heavy 2005 GTO ran 11. That is with 243 heads and a cam equivalent to the LS6. Topping this modified sort block was a set of Stage 2, CNC-ported 243 (LS2) heads from Total Engine Airflow. Tore down the outside of the newest 6. The LS6 was designed specifically by GM to surpass the LS1 as the best performance head, and it did such a good job that the "243" casting was recycled on the LS2. I would like to see a solid 500hp at the flywheel, but not looking for anything too extravagant (driveability is still key). 12480005 – LS Small Block V8 2000 LS1, GTZ, aluminum, 38cc chambers, 2. We also do quite a bit of performance cylinder head work. 0 Head Gasket For LS Series Engines: Head - Amazon. 35-inch pushrods. The cast iron head LQ4s had a reverse split 191/190 cam like the 4. It is an iron/aluminum (1999 & 2000 model year engines had cast iron heads) design. a "cam only" LQ4. Same heads, crank, rods, cam, etc. Escalade EXT. This combination increased the compression from 9. DO go with 6. These fully CNC ported 215cc heads are specifically designed for $2,395. The GenX 215 heads featured full CNC porting, 215cc intake ports and a 2. 548 120 115 800-5500 smooth 2148 a. Fuel was supplied by a Holley 950 Ultra HP carburetor while spark was supplied by an MSD ignition controller designed specifically to convert the. 0-inch (101. Hi-Ram Sheet Metal Fabricated Intake Manifold 2005-10 Ford 4. (Photo Courtesy West Coast Cylinder Heads) Here is a look at two molds made from Chevrolet Performance’s CNC-ported L92 head (left) and an early Mast Motorsports small-bore LS3 casting (right). All Listings All Listings Buy It Now Auctions Only Fixed Price. Just don't want to deal with machine shops anymore. 3L V8 706/862 Aluminum Cylinder Head PAIR. I do spray water/meth at 9psi on pump 92 octane and ramp timing down around 11º from 4800 to 5200 at peak torque area. 0 mm) stroke. I want the most out of the combo and don't mind fly cutting the pistons. The only reason I'm selling them is because the engine they were installed on spun a rod bearing and I'm upgrading to an LS2 GEN IV block, which DOES NOT use this stud kit. Price Highest Best Match Ending Soonest Price Highest Newly Listed Price Lowest. Oct 14, 2019- Explore garhjcampbell's board "Building a Ls engine", followed by 291 people on Pinterest. com, 1955 Chevy 1956 chevy 1957 Chevy Forum , Talk about your 55 chevy 56 chevy 57 chevy - Belair , 210, 150 sedans , Nomads and Trucks, Research, Free Tech Advice. Shop Engine Top End Kits and get Free Shipping on orders over $99 at Speedway Motors, the Racing and Rodding Specialists. Trick Flow 215cc GM LS Cylinder Heads, PN: TEA-LS215TF-CUSTOM. The head and cam set on this motor is made for a heavy truck so it is biased towards torque. CNC cylinder head porting services. The Pro 1 cylinder heads feature a six-bolt design to take advantage of the extra clamping force available when used with the Dart LS Next and GMPP LSX blocks. The 350 designation is the cubic inch measurement that also translates to 5. Brian Tooley Racing, Inc. I am not advocating a monster all out cam at all. 02 inch stainless valves can get you into the 500 to 600 horsepower range with a nice cam. I plan on getting a set of 799/243 heads to bump up compression a lil bit. If you are going to swap heads, then I would have the 243 milled and use the 0. Drivetrain loss sucks in trucks, to top it off the L92 heads need to breath to shine Stock 243s or PRC 2. Season 1, Episode 10. The LQ4 featured cathedral-port heads that offered peak intake flow numbers near 245 cfm. 3-liter LM7 or even the 5. Fuel was supplied by a Holley 950 Ultra HP carburetor while spark was supplied by an MSD ignition controller designed specifically to convert the. 3 with the TBSS intake, a 224/228 TSP cam, and stuffing some 4. Once the new cam is in, the new timing set goes on. 5 psi, so it can theoretically make more power. LQ4, LS6 cam, 706 heads, 317 Heads, Junk Yard Dog, AND LIES This might be my best choice.