Thread: 454 4 bolt or 2 bolt

Tweet

I can only say from reputation in SBC's and BBC's that splayed main bolts are stronger ,splayed main studs even more so and that from my stock car days that stock 4 bolt SBC's are weaker across the caps than 2 bolts .That said, it means nothing when refering to a BBC. I am running studded 2 bolt mains in my 461.

If you are doing it from scratch and have the money, go with a 2 bolt block and have splayed caps installed, If money is a huge issue the 4 bolt block with new arp bolts will stay together.

Originally Posted by Dgas56

I can only say from reputation in SBC's and BBC's that splayed main bolts are stronger ,splayed main studs even more so and that from my stock car days that stock 4 bolt SBC's are weaker across the caps than 2 bolts .That said, it means nothing when refering to a BBC. I am running studded 2 bolt mains in my 461.

see this is where i seem to have this problem in my head with week points because if the sb stuff has less material when being a 4 bolt then should it not be the same with the 4 bolt bbc or is there that much more material in a bb that it is not an issue?

I have a line on a fresh 60 over 4 bolt 454 block that is already studded with arp for 1000 cdn or i can buy a friends 76 camaro that is rotted out and been sitting for 15 yrs in a field for 1000. He has no idea about anything as far as the motor goes, other than its a 454.I am assumeing its a 2 bolt block. Do i take a chance on the camaro stuff or buy the 60 over block...decesions, decesions