hey,

has anyone ever used a smaller crank like a 305 or 302 crank in a LT-1?

ive seen it done in an LS-1 and it made well over 400rwhp at like 7800rpm.

im thinking about building a motor from a bare block and im just kinda day dreaming of what i want to do with the motor.

but i want to keep it smog legal. and how would it be to tune for such a change?????

 

a 305 crank is the same crank as a 350. 3.48" stroke.... some people make 1 piece rear seal 3.0" strokes (302cid), but they are'nt very popular because it's just not practical for most budget/semi budget builds. basically, u have to back up the valvetrain to rev that high, not to mention internals on a premium balance. all those parts can get very expensive, as you've seen on any fordged assy. sure, you'll make a ton of hp at a gazillion rpm, but almost no torque which makes it kinda useless for anything else besides some really high rpm fun, or road coarse racing (hence what the 302 was designed for). It's just not the seat of the pants torque performer most of us seek, and find, on somewhat of a budget build.

 

94-96 the base engine in the Caprice was the L99 a smaller bore and stroke version of the LT1. It has a 3" stroke problem with this project is the stock computer can not control spark much beyond 7K the stock 3.48" crank will spin that high so why cut your displacement.

 

well im gonna be doing budget build so ill throw this idea out the window. i just kinda wanted to hear some thoughts on the idea.

anybody have any good thoughts for what ive got planned? id like to hear them.

im thinking of just starting with a bare block....building up a short block with forged rods and pistons (low CR) for my blower car. then when i do the swap ill just use my stock heads, hot cam, intake, water pump etc....from my current motor.