i have a 94z with the lt1 an wanna swap it with the ls1 an have a few questions im not sure about. first i wanna kno if the lt1 flywheel an bellhousing off the m6 transmission will bolt up to it? also if the intake manifold would bolt up? an if it does could i use the stock fuel rails an injectors or need to upgrade the whole fuel system to handle a higher presure injector? any info would really help not to familier with the ls1 thank you.

 

dont think injectors will either.

 

The LS1 injectors will interchange with the LT1 injectors, and they are both rated 24 #/HR at 43.5psi (LT1 system) and 28 #/HR at 58psi (LS1 system). But the fuel systems are totally different. In addition to the operating pressures noted above, the LT1 has a recirculated, vacuum compensated system. The LS has a dead-ended system, with no vacuum compensation.

The LS1 engine, while called a "Gen 3 SBC" has very little in common with the LT1, other than both being made by GM and both having the same bore center spacing. Other than that, some incidental minor parts interchangeability is all you can do. Totally different firing order, intake port spacing, exhaust port spacing, etc, etc, etc.

 

injuneer,

while were on ls1 stuff, can you tell me the differences in ls1,ls3, ls6,ls7 engines as far as cubic inches.. ls7 is 400ci isnt it?

 

what a dumba$$.. must be an uptight corvette owner

 

The heads on the LS1 won't allow the LT1 parts to bolt up. The manifolds and intake need to be from an LS series engine.

 

About the only thing thats interchangable is the lifters.

 

interesting info i was inquiring about the same my cousin has a ls1 but not sure what all is included & i was thinking of putting it in my 95 z28 M6. so for the ls1 to go in everything from lt1 has to be removed & replaced with ls1 parts? or

 

Pretty much.

 

LS1,5.7L 346 ci
LS2,6.0L 366 ci
LS3,6.2L 376 ci
LS7,7.0L 427 ci

 

That info is all readily available on the 'net.