engine component compatibility

[jonny985]

Curious about what 3.8l items are interchangable on Camaro/firebird/grandprix/bonneville/regal/lesabre

I'm only sure about heads being interchangable

Anyone know if these are interchangable:

-Throttle bodies (at least the cast if the throttle cables hook up diffrently)

-Lower Intake Manifolds-pretty sure these are

-Upper Intake-only firbird with camaro and the rest with the rest

-Cams - grand pix gt with camaro with firbird are compatible
- what about lesabre/bonniville

-rockers/pushrods/springs/lifters ??

-Obviously the exhuast manifolds and trannies are different for the FWDs

-What about the block, I have heard from a junkyard woth compatibility software that the FWD blocks differ from the RWD blocks, anyone else heard this

[DEE97GTP]

-Throttle bodies (at least the cast if the throttle cables hook up diffrently)
Pretty sure they are different. but not 100%

-Lower Intake Manifolds-pretty sure these are
I have heard there is a difference that makes them incompatible . I think the thermo is in the wrong spot.

-Cams - grand pix gt with camaro with firbird are compatible
- what about lesabre/bonniville,
Yes, almost positive.

-rockers/pushrods/springs/lifters ??
-same

-Obviously the exhuast manifolds and trannies are different for the FWDs
yes

-What about the block, I have heard from a junkyard woth compatibility software that the FWD blocks differ from the RWD blocks, anyone else heard this
not sure
not sure

[navyblue2000]

There is something done as well, with the lesabre, and I think bonneville, that GM factory rates them at 205 hp and 230 torque. I don't know for sure if it's intake manifold or exhaust manifold design, but GM claims 5 more horse and torque from them