Alright talked to a buddy of mine,and he mentioned something about a motor that hes heard of people building called a long rod 302. I guess these guys are using a chevy rod with a Ford 302/306 piston and making good power....anyone ever heard of this?? And if you have got any info on em?

 

302 stroke crank with a 5.400" rod. its NOT a chevy rod. you need to get the correct pistons as the pin is set higher in the piston to offset the longer rod.

the theory is that the piston dwells at TDC and BDC longer.

while i dont know about that, i know that it give you a much more favorable rod/stroke ratio.

 

just run a stroker motor

 

5.7" SBC rod with a 1" c/h SBC stroker piston. The piston slows down at TDC and speeds up at BDC, a bit more dwell up top can reduce timing requirements and give a bit of extra detonation resistance, but the biggest advantage is the much shorter compression height of the piston means a much reduced weight. That's the setup I'm running and the pistons I'm running from Mahle are only 383 grams, with a small 112 gram wrist pin. You need to run a 2.100" conrod journal on the crank and machine the big end of the rods to the correct width.

 

+1, rather have the extra cubes

 

I would appreciate if you would tell me more about your engine combination.

I am interested in building a long rod 302 for my 72 Datsun 240Z.

Mark

 

i am interested in knowing how much of a power adder can be ran with that thin of a piston