I have a 261 I'm building and I was wondering what the HP and torque difference would be between the stock 261 head and a 848 head, neither head milled. I'm using a Bull dog cam and the block is bored +.060. I'm going to use Langdon's holley 2 barels, finton headers. Just want a comparison because I have a couple of NOS 261 heads that I can use and I do not have a 848 head.In the end is there that big of HP difference in the heads. I know the compression ratio will be higher but nobody ever says you will get this HP with a 261 head and this HP with a 848 head.
37Chevy
