Long Rod 306
Get an estimate on balancing too - with different rods and a short piston, balancing could easily cost double what the pistons cost. I still think the gains do not in any way justify the expense. You can roughly figger $350 for rods, $250 for hyper pistons and $200 to balance plus heavy metal at $40+ a slug. Estimate two slugs to balance and you're near $900 to pick up maybe a few HP and reduce sidewall loading a hair. Running 500 miles at WOT - worth it. Running 5 miles to the Sonic - not.
1967 Falcon 4 door 351C - 70 Mustang 351C
Owner built, owner abused.