the 305 that i pulled out of my truck i shifted at 6500 easily on a stock longblock with a summit 268 cam and performer intake. better valve springs, a performer rpm intake and a good ignition and revving to 7000 would have been no problem
the 305 that i pulled out of my truck i shifted at 6500 easily on a stock longblock with a summit 268 cam and performer intake. better valve springs, a performer rpm intake and a good ignition and revving to 7000 would have been no problem