Weight Guess?? between these motors...
 

Turbo Buick 3.8 V6 VS. any LSX less say LS2 for arguments sake (aluminum block)

I have a debate going on somewhere else.... claims a Turbo Buick 3.8 V6 is 'way' lighter I said I doubt it with out any reference or research.

Any know the weight difference?
The debate started over which is better for the back of a Corvair, my vote LSX

thanks

Posted by Steve1968LS2:

457.6 lbs, LS1 auto; 497.2 lbs, LS1/LS6 manual

From Chevy2only; http://www.chevy2only.com/index.php?..._position=54:8

Weights are from carb to oil pan with HEI dist, harmonic balancer, and iron water pump.

SMALL BLOCK
All iron small block 520 lbs.
Alum heads w/iron small block 480 lbs.
All alum motor 389 lbs.

BIG BLOCK
All iron BB 754 lbs.
Alum heads with iron block 660 lbs.
All alum BB 501 lbs.

I read somewhere that the aluminum ls4 in the FWD Impala is the same weight as the all iron 3.8

I think the series 2 and 3 3.8s had shorter decks than the RWD 3.8s so if anything the LS motor is slightly lighter than the 3.8 turbo.