Originally Posted by 1968RallySport
I want to build a 302 as close to what would have originally been assembled by GM for 1968. I have a 378 2-bolt block, 1178 crank and 291 heads. I would like to stay with the 5.7 rods. Any suggestions for pistons with that setup? Also would like to keep the CR at 11:1.
Hi Daryl, look at what you're doing from another standpoint!
You will most likely need to "special-order" any 302" pistons with the factory C.H. of 1.800"+.
If you stay with the factory 5.700" rods you will need to run the "pressed- pins" setup on the "special-order" pistons, which will most likely have the "floated-pin"/"lock-ring" option anyway??
You won't be able to assemble the rods and pistons (unless you own either a pin-press or a rod-heater), however, on the "floaters", you can do the assembling at home if necessary!
The "long-rod" units make more power by design, lighter pistons/lighter rings reduces "frictional HP"!
By the time you add the bill up with making the 5.700" rods workable and ordering a set of "true" custom pistons, you will be close to some aftermarket rods (with bushings) and a set of "custom-stocking" pistons!
Thanks, Gary in N.Y.
P.S. From an outsiders view, you will be the only person who know the "rods are long and the pistons are light"?? The unit will be a much better build overall!!