If you haven't already bought that cam I'd think about doing something else... Comp has had way more cam failures than I'm comfortable with....
75cc heads lowering the compression
- Thread starter Spanks
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If you haven't already bought that cam I'd think about doing something else... Comp has had way more cam failures than I'm comfortable with....
Curiousyellow71
Well-Known Member
10.07 will be more pump gas tolerant. A 274 isn't a real big cam. The XE series also is a little more prone to detonation because it closes the intake quickly building compression. If you had more cam I would do higher. I would not get lifters from comp. Imo...I don't think the cam quality is much different then others, we've had to returns cams cause of quality...just do a thorough inspection.
..try to get hy-lift Johnsons lifters. They are the best out there currently unless you come up with some older lifters. Comp was OK about 15+ years ago. The Johnsons aren't cheap..but better quality.
..try to get hy-lift Johnsons lifters. They are the best out there currently unless you come up with some older lifters. Comp was OK about 15+ years ago. The Johnsons aren't cheap..but better quality.
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In my humble opinion, it's a no brainer. If you were going for max power for a drag car, more compression makes sense. But the power difference between those two is negligible, and the higher comp might be on the verge of detonation (or worse). I would absolutely go with the lower of those two.... and probably lower it still more.
For a driver with a mild cam, I would shoot for mid nine, so you can run proper timing advance.
For a driver with a mild cam, I would shoot for mid nine, so you can run proper timing advance.
He's running aluminum heads I think low 10's should be safe....
Spanks
Active Member
I filled out Hughes 21 questions for cam advice. I ran across this cam. Any thoughts. Looks like Hughes is selling Hy-lift
Curiousyellow71
Well-Known Member
It's a nice smaller cam.
.520 is about max with the Stamped. The Stamped steel rockers usually run less then 1.5 so you can go a little bigger. But longevity isn't good.
What rockers?
.520 is about max with the Stamped. The Stamped steel rockers usually run less then 1.5 so you can go a little bigger. But longevity isn't good.
What rockers?
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Curiousyellow71
Well-Known Member
I would call Hughes and ask with your combo.
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