Quote: At those specs what octane gas are you using? Waht would you gues the power out put to be for a 440 vs 400?
We used AM/PM 91 octane from a pump.
440 should make a few more HP, and around 30-40 more TQ.
(quote)I believe there was about .045 left of the open chamber, so with a .045 gasket it was about .090 which can be bad if you don't plan it right. We installed the cam straight up instead of advanced like Comp recommends to keep from having too much cranking psi and to give some top end power to a stock headed/rocker arm'd build(quote)
I assume this means this engine was built in mind to not be detonation prone with 91 octane in a street car?
The reason I ask is I have a 440 (with KBs) at zero deck with(same gasket) 452s and a smaller Powerizer cam (467/262 232@.50 IIRC) and I had detonation problem when it got to be summer time. The engine stayed about 190-200 or so when it was 95* outside. I started to lose a lobe so know I have to replace the camshaft.
I plan to mirror your recipe so I know what to expect.
