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Forum: Pontiac - Boost 02-24-2024, 12:40 AM
Replies: 14
Views: 2,893
Posted By Jack Gifford
Maybe I should say 750 HP (on gas) would be easy...

Maybe I should say 750 HP (on gas) would be easy with a 400, since mine ran methanol through a Hilborn 4-port, 12 PSI boost.
I doubt there would be any bottom end problems with about 750 HP. My...
Forum: Pontiac - Boost 02-23-2024, 01:58 AM
Replies: 14
Views: 2,893
Posted By Jack Gifford
I wouldn't be too concerned about cam profiles....

I wouldn't be too concerned about cam profiles. When my hemi was broken for 1 1/2 seasons I ran a 6-71 blown alcohol 400 (-16 heads) with an ancient Crane hydraulic cam (from 1958) with good success....
Forum: Pontiac - Boost 02-14-2024, 01:52 AM
Replies: 14
Views: 2,893
Posted By Jack Gifford
I'd be interested to know what the rocker arms...

I'd be interested to know what the rocker arms are from.
Didn't all '59 heads have bathtub chambers?
Forum: Pontiac - Boost 02-13-2024, 02:00 AM
Replies: 14
Views: 2,893
Posted By Jack Gifford
Are they really '59 heads? The chambers don't...

Are they really '59 heads? The chambers don't look like '59. The valves don't appear to be at 20 degrees. And I'm not aware of any roller rockers for '59 heads. I had to custom machine the rocker...
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