Thread: Gen 1 or LSX?

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If you were starting from scratch, what would you build?

It is going in a saturday night special hot rod. Shooting for 500 hp N/A ....with the option of spraying it for more.

LSX, no contest. This is undoubtably the best product GM performance parts has ever put out. Some day I will own one.

Definitely the LSx. I love my LS1 great power and drivability. Either get the LSX crate to build your own or start with a drop out. Best bang for the buck on a drop out is an LQ9 or LQ4 from a truck or SUV. What kind of car are you plnanning to put it in?

Pat

I agree with falconvan, the LS series are way better.

Originally Posted by Stu Cool

Definitely the LSx. I love my LS1 great power and drivability. Either get the LSX crate to build your own or start with a drop out. Best bang for the buck on a drop out is an LQ9 or LQ4 from a truck or SUV. What kind of car are you plnanning to put it in?

Pat

It is going in a 1941 Dodge pickup.

Are you also a fan of the L92 heads?

Originally Posted by Flipper_1938

It is going in a 1941 Dodge pickup.

Are you also a fan of the L92 heads?

Those seem to be the factory heads of choice, there are also a number of aftermarket companies selling prepped heads that really make some power.

Surf on over to LS1Tech.com Lots of info there, plus there is a hybrids and conversion forum that will help you with your swap. Without that I would have been way longer and more expensive on mine. Very little that has not already been done by someone.

Pat

Are stock cranks and rods worth using? or is aftermarket stuff required?

A lot of guys ar using the stock cranks and rods and just changing the rod bolts. These are 6 bolt main blocks and they hold up pretty well. I have not dealt with modified versions though so best to ask that question over at LS1tech in the Internal engine forum. Lots of good reading over there.

Pat

LSX, I love my 5.3 powered 51 Chevy

LSX,LS I was wondering today what is the difference, and what would be the best model truck or car to be looking for something of the LSX motors.

The car motors are aluminum block, came in Corvettes starting in 97 and V-8 Camaros and Firebirds starting in 98. And in GTOs and Cadillac CTS-V until 2004. Then in 2005 the LS2 came along which is called Gen IV because of some subtle differences mostly in sensor and their locations. The 97-98 motors run good but have differences than the later models. Trucks started getting the motors in 99 with the 4.8 and 5.3 liter, These were iron blocks and I think in 2000 or 2001 started getting aluminum heads. 6.0 liter came in the 2500 and above trucks and then in the SUVs. The 6.0 are designated LQ4 and LQ9. The LQ9 is in the higher end SUVs and has higher compression. That's a very brief description. Mixed in there are the crate motors and the newer LS3 6.2 and the Hipo 5.7 LS6 and super high end 7 liter LS7.

Hope that helps

Pat

helps alot but one other question, is there a differnce in the lsx vs the ls blocks if any at all. and if so, waht about the ls 1 through 7 are those compatible. as like the earlier blocks.

LSX Bowtie Block (Standard Deck). 3.990" finished Siamese Cylinder Bores (ready to be honed to your specifications). 9.26" semi-finished standard Deck Height (ready to be decked to your specifications). Max 4.250" recommended Stroke. Capable of 364 to 482+ cid. Orange Powder Coat finish. Accepts all Gen III & IV LS Heads, Cranks, Cams, Etc. Approximate Finished Weight: 225 Lbs.

Amazing what even a little reading can get me.

Good research! Depending on your budget and goals, the 6.0 truck engines seem to give the best bang for buck. They are cast iron block and wiegh about 80 pounds more than the aluminum block motors. The aluminum block motors won't take much of an over bore (max .005 on early models), the iron blocks will take more. The guys that are using power adders are mostly using the iron blocks. Based on your originally stated goals, I would look for a 6.0 either LQ4 or LQ9. But even the 5.3 motors will make good power. One of the car mags built one with an LS6 cam and not much else that was pumping 350+ hp at the wheels I think. Plus they still got good mileage and drivability.

Pat

so in your earlier post pat you said higher end suv's for the 6.0 so the Cadilac Escalade, and or what else maybe the GMC Denali