I always here how the LS1 heads are so much better then the LT1 heads, but why cant you put LS1 heads onto a LT1, as I understand the blocks are the same design, only 4 cubes difference. So why cant I put LS1 heads on my LT1?? if the 4 ci is the difference then could it be machined to match the LT1 cylinder?

FYI, I have NO technical information about this, this is pure speculation on my part.

 

The search feature is a useful tool

http://web.camaross.com/forums/showt...+heads+fit+lt1

 

The blocks are absolutely NOT the same, they are totally different, no interchangeable parts whatsoever. That's why it won't work.

 

Great Answer!

 

It's ok man... I asked this question too when I was new.

In a nutshell:

--Head bolt locations / angles
--Intake / exhaust port locations (LS1 doesn't have siamesing like LT1 and other SB-chevy's do, so you'd have to custom-fab an intake manifold)
--Cylinder / chamber spacing (even if you just lay the LS1 head on the block it's chambers won't line up to the LT1's cylinders)
--Coolant passageways

This stuff is not the type of stuff you can fix with "a little machine work".

Also If anyone ever tells you that they've got an LS1 cam in their LT1 car, they're full of it. Journal sizes and spacing are different (I think). The closest you could come is getting a cam custom ground to match the specs.

What I really wish someone would do is make an SBC head that had LS1-style ports that weren't siamesed. But then you'd need somebody to grind a cam that had lobes to match.

 

Not to mention new intake and exhaust manifolds.

 

same reason you cant put ford heads on a chevy... nothing lines up right b/c they are 2 totally different animals.

 

Ha ha, ooh its nice to dream isn't it. I would like to see the look on someones face when they see a 4 bolt pattern instead of 5.

Nothing interchangable as far as internals/engine parts go, go buy an LS1 if thats what you want

 

actually brad don't you remember that 427 ford that had 392 hemi heads put on it? Yes i am serious that is correct it can be done. If you had the skill you could probably do it but why? why not just get some killer LT1 heads instead or at least get some aftermarket 350 heads to adapt that would be easier.

 

Ford licensed Hemi technology, anything can be done with money - but for the common man, usually it would be a waste to try. Keep in mind those LS1s are not 23º heads, so more PITA for you there.

Delorean also was involved in a SBC hemi project, problem was it made about the same HP as a hopped up SBC head.

Get some SBC heads adapted or get some AFRs.

 

Any compotent engine builder can modify a Generation 1 cylinder head to work on the LT1.

So your choices are unlimited, although I would say it's a waste of time doing this for another 23º head. AFR has you pretty well covered there.

Take care

 

LT1 looks MUCH better though.

I didnt know they were so different, I jsut thought that they were similar displacement V8 so other things would fit up, but i really had no idea at all.

hmmm guess going to have to search this putting a LS1 into a LT1 car thing more, seems like its the easier/cheaper power adder.

 

I think simply by plug access alone the LS1 looks better I guess the LS1 look would appeal more to Ford guys though.

 

Cheaper option is to use the engine you have and pay for a cylinder head conversion.

There are better performance options in the 1st generation race cylinder heads. A 600 bhp 383 or 396 is a breeze with that route and you could do it on a budget.

Take care

 

But lets all keep in mind budget is a relative term