Lq4 ls3 head swap software

Cam swaps, especially serious performance grinds, are almost. The ls3s block is an updated version of the ls2 casting with a larger bore at 4. Weve done that with our cnc ported ls3 cylinder head that flows more than 350cfm intake side, with 276cc intake runners and 2. First we will go through the most common engine designations and specifications. Lsx tech sticky specs, castings, swap info, etc ls1, ls2. With five different mount kits available, you are sure to find the mounts needed to position the engine and transmission assembly in the appropriate location. Jan 26, 2017 for the older cathedral port engines, its a simple bolton swap to add an ls1ls6 lowprofile intake.

Ultimate ls cathedral port cylinder heads guide ls engine diy. The enormous difference in valve size has a lot to do with the difference in flow between typical cathedral and rectangular port heads. Dr525 376ci nmca ls stock class spec engine fcar pan. You can get the same power from the lq4, but it may take a little more work on your part putting together the package. Ive been doing some research on the lq4l92 combo and jumped on a set of heads on ebay before i got all of my research done. Direct fit for 6769 camaro and crossflow conversion radiator for 6267 gm x body, and 6467 chevelle with 2034 wide core for gm ls swap 4. Since every ls engine swap is a little different and there are lot of choices to be made, you can use this guide as a reference for ideas and part numbers as you move through the process. My cousin had an lq4 with patriot ported 243 heads and an ms3 and it drove great behind a t56 with stock 3. Dec 15, 2017 ls heads test the dyno naturally, the answers came on the dyno, but not before deciding on a proper test mule.

This 1973 camaro has an lq4 truck motor bottom end with ls3 heads, and lays down solid numbers on the dyno. But i use as my daily driver and pull a inclosed trailer on occasions. The largest of the three cnc programs eliminates most of these areas. With commentary by mike coughlin, jegs high performance. The intake ports are similar to ls7 heads and differ from regular catherdal port heads. An ls3 or ls9 cam makes good power, but not where you want it. See more ideas about ls engine, engineering and ls swap. Ls heads test the dyno naturally, the answers came on the dyno, but not before deciding on a proper test mule. If you go with a carb setup the victor jr intake is what most guys use. Oct 17, 2011 ls3 cylinder head, cam, and intake swap crate ls3 throw down eeking 108 extra horsepower out of a crate ls3 with a cylinder head, cam, and intake swap. The ls3 was first released in the 2008 corvette and was the most powerful corvette engine to date. The aluminum block is filled with a sturdy reciprocating assembly that combines with l92type rectangularport heads to deliver a 10. This kit will even fit other ls family engines with at least 4. Ls swap temp gauge sensor install howto chevy impala ss.

By the end of this article you will be a ls engine junkyard specialist. The ls3, ls2, and lq4 and related engines are more closely related, newer, and easier to get power from. The motor has about 3k miles on it after a complete tear down. Holley has engineered the most complete line of fuel, air, exhaust and accessories for your ls swap. I decided to pull the trigger on an ls3 head swap and of course accompanied with cam and supporting mods. Ls3 cylinder head, cam, and intake swap crate ls3 throw down eeking 108 extra horsepower out of a crate ls3 with a cylinder head, cam, and intake swap. These heads are basically the same as the ls3 head.

The ls based smallblock engine is the primary v8 used in general motors line of. The highlift ls7 camshaft makes the most of the heads generous airflow attributes, with. Introduced in january 1995, it is a clean sheet design with only rod bearings, lifters, and bore spacing in common with the longstanding chevrolet small block v8 that preceded it as the basis for gm smallblock v8s. Aug 09, 2017 this 1973 camaro has an lq4 truck motor bottom end with ls3 heads, and lays down solid numbers on the dyno. The ls based smallblock engine is the primary v8 used in general motors line of rearwheeldrive cars and trucks. May, 2012 the ls3 s block is an updated version of the ls2 casting with a larger bore at 4. In my opinion this is the greatest perceived reward dollar for dollar. The stock ls3 is fitted with a 2001 ls6 camshaft that is modified with more intake lobe lift. Ls engine swap cylinder head upgrade summit racing quick flicks duration. Lq4 cam position sensor is in the block behind the valley cover, you will need to plug this hole if using an ls2 sensor in the timing cover these are the differences ive been able to scrape off the top of my head, anyone else is welcome to chime in and i. The cam swap was combined with the lowprofile ls3 intake. General motors called it the geniii smallblock, with the ironblock versions in trucks and the allaluminum ls1 introduced in the thennew c5 corvette. These ironblock truck motors produce 345 horsepower at 5,200 rpm.

But when you do this, the upright water pump outlet to the radiator is. Iron heads, small cam and the old sbc crank rear flange thickness. Making the engine work in the chassis isnt all too difficult on paper, with a few important components needed to mate things together. Apr 30, 2016 superchevy posted an article showing a budget build 6. Cylinder head options for building biginch ls engines. Ultimate ls rectangular port cylinder heads guide ls engine diy.

Sep 26, 2017 with the induction side of the puzzle figured out, we turned to stainless works in cleveland, ohio, for an exhaust solution. Sam founder, judson massingill, lives by a simple adage. Finally one day i drew a line in the sand and what a relief it was. Mar 09, 2015 the software also is not the best way to swap a computer from a different year to a different engine. For the older cathedral port engines, its a simple bolton swap to add an ls1ls6 lowprofile intake. They said for the street you would actually be better off with the aftermarket gen 3 heads. Completely different intake is used on l92 ls3 heads. May 21, 2012 case in point, pace performances conversion package to swap the factory lq4 top end with the better breathing, l92 cylinder heads and highlift camshaft. Swapping on the lq4 head drops the compression ratio of a typical ls1 engine to 9. We have a 2000 ls1 long block that we wont be needing. The chevy ls engine family has built up a large following in the last 10 years from many hotrodders and dragracers. Anyway, i am building a 88 gtu fc with a lq4 bottom ls3 heads, midrange cam.

You could meet your hp goals with a bone stock lq4 and a tqv2 no problem and still drive great. This guide will assist you in making a seamless ls engine swap. The ls3 is filled with components designed for high performance and longevity. Case in point, pace performances conversion package to swap the factory lq4 top end with the better breathing, l92 cylinder heads and highlift camshaft. In this article we will look at the 7 points of finding the best ls engine junkyard specials. Im now trying to decide which intake to get between the l92 or ls3. Though they bare plenty of resemblance to the ls3, the ls9 head has. Drivetrain loss sucks in trucks, to top it off the l92 heads need to breath to shine stock 243s or prc 2. But when you do this, the upright water pump outlet to the radiator is directly in the way. Ls swap temp gauge sensor install howto chevy impala ss forum. This above holds true compairing stock ls1 style heads.

Blog everything you wanted to know about the gm ls engine. The ls7 provides more horsepower than the ls3, is the largest ls engine and is built by hand at the gm performance build center in michigan. To save time when swapping cams, gm designed this slick plastic holder that. And 500hp out of a mild cam, stock l92s aint gonna happen with an lq4. L92 heads are a gm production head that can be found on the 6. Hooker ls engine swap mounts are designed to make the task of swapping an ls engine into your classic muscle car or truck as easy as possible. Originally equipped with iron ls heads yep, thats right, the lq4 was quickly. There are a few other parts needed for a lq4lq9 cam swap such as an ls2 timing. Superchevy posted an article showing a budget build 6. The enormous difference in valve size has a lot to do with the difference in flow between typical cathedral and. The motor is an lq4, pulled from a chevy 2500 express van with just 70,000 miles. Im not going to get into the ls3, ls7, ls9 battle because of the.

These ironblock truck motors produce 345 horsepower at 5,200 rpm and 380 lbft of torque at 4,000 rpm from the factory. We are looking at a 1973 chevrolet camaro powered by a built gm lq4 v8. The needs of a daily driver differ greatly from a dedicated race car, or even a. Oct 21, 2014 if your going turbo the 317s are what you want where as for na builds the 243 is the best stock head. Take out that tired engine and put a gm ls engine in there for real power. This is an early 1999 lq4 iron truck engine with iron heads. Ls3 gets cylinder head, cam, and intake swap chevy high. Well, if you want it as cheap as possible, stick with whats in the car.

May 26, 2012 lq4 build head install mti stage 2 heads 862 casting using a torque angle adapter duration. Most of your power gains will come from a good set of heads matched to the rest of the engine. Completely different intake is used on l92ls3 heads. This is strictly a daily driver or towing rig, and i occasionally have some pretty steep hills to climb. A similar program for the 241 casting is also available. The allstainless headers also feature merge spikes in the collectors, and dump the spent gasses into threeinch stainless exhaust system with an x. The combination of the extra torque offered by the head swap, and power. The software also is not the best way to swap a computer from a different year to a different engine. Lq4 build head install mti stage 2 heads 862 casting using a torque angle adapter duration.

Lsx tech sticky specs, castings, swap info, etc discussion in ls1. Converting a truck ly6 engine into an ls3 for more power. Anyway, i am building a 88 gtu fc with a lq4 bottomls3 heads, midrange cam. Ls swap systems 197387 gm c10 2wd ls swap components. Shell make more than enough to tow the bmw to the track, or to make for a comfortable crosscountry drive. With the induction side of the puzzle figured out, we turned to stainless works in cleveland, ohio, for an exhaust solution. Many people want to label them the same but a rep at brian tooley told me i needed the l92 that it would be better for low end torque. Keep looking, id definately want some aluminum heads on my engine. Upgrading to the more advanced and better flowing l92 cylinder heads raises compression from 9. If you can afford an ls3 or ls2, then youre basically a camspring swap away from 500hp at the crank with stock efi. The fully assembled ls3 cylinder heads flow more than 350 cfm on the intake side, with 276cc intake runners and 2. Youd need a big cam, some real head work, 1 78 headers to make a hp goal like that.

Drivetrain loss sucks in trucks, to top it off the l92 heads need to breath to shine. They listened, devised and planned out an awesome package for its weekend wrenchers. Ict billet sbc vehicle to ls engine motor mount adapter plate universal swap bracket small block ls conversion adjustable ls1 ls3 ls2 lq4 lq9 ls6 l92 l99 l33 lr4 billet 551628. Inlet and outlet fittings are available separately in three different sizes listed under the service parts tab based on your hose size needs. Sep 21, 2015 by normal standards this is considered quite large, but not compared to the 2. Also look for 799s, they are same as 243s just made somewhere else and do not come with sodium valves. It is a lot easier and cheaper to get my hands on a 6. But i just read an artical in gm high tech that an aftermarket set of cathedral heads flow just as good as stock ls3 heads but the cathedral heads have better low end flow. They provided us with s10ls swap headers with 1 78inch primary tubes. All of this takes around 20 milliseconds to accomplish and is literally seamless to the driver. Level 1 sum8714 pro ls stage 4 truck swap cam and beehive spring kit. The ls3 also used the highly desirable l92 cylinder heads and a more aggressive camshaft and revised valvetrain.

You can a lot of horsepower out of an ls1 with cncd heads, the intake you listed and a properly matched cam to it all. By normal standards this is considered quite large, but not compared to the 2. So if you are replacing your stock engine lq4, lq9 4. I know with the l92 ls3 heads and the hot cam it should be very close to 500hp. This engine uses l92 ls3 style rectangle port cylinder heads, though without. The basic ls variations use cast iron blocks, while. The lq4 served in anything from breadvans and boats to suvs between 1999 and 07. The lift numbers allowed use of factory ls3 valve springs, but we opted to install a set. Details and tips to make your ls engine conversion easy. Looking to make 500hp with a ly6 need help ls1lt1 forum.