Different Strokes

[David Sagers]

Thanks all for the info, there are a lot of very bright people on this list, and I appreciate your help.

I'm calling the engine builder this afternoon and will build a 4" stroke SBC using a Rodeck alum block made for the 4' stroke.  In order to make this combination live for a long time I'll be using a 4340 non twisted crankshaft, 6" Carrillo rods and pistons from JE or Wiseco.  I'm also going to take the advice to have the pistons coated, both the crowns and the skirts, and I'm going to send the heads and exhaust manifolds in for the heat barrier coatings.

I also agree with ECMnut at aol.com when he said "I think your biggest headache will be traction."  (and yes, you are welcome to come over for a test ride!!)

Thanks again everyone!


>Carl Summers wrote:
>       It has been my experience that it does take less time for the >engine to accelerate with a shorter stroke,,,but like you said the >larger cu in will give more streetable torque and that would >probably be the trade off I would take if I already had the parts >as you do.....The biggest downfall of the 4" arm is the fact that >you have very little(if any...was this 350 mains or 400?) journal >overlap and if you are planning to make alot of hp(1000+) and/or >rpm,,expect this crank to crack probably after 30 1/4 mile >blasts.....just some experience....hth's
>-Carl Summers