does anybody know if the holley top end kit and the heads for that matter will flow enough for a 331ci ford? or would i need something bigger?
Holley systemmax heads enough for 331?
- Thread starter russ1979
- Start date
Joe 5.0
Founding Member
I've heard some negative comments from engine builders about the Holley heads, namely the valve seals.
The intake is nice, but you would probably be better suited getting the trickflow kit, or even better a custom cam and heads to match.
The intake is nice, but you would probably be better suited getting the trickflow kit, or even better a custom cam and heads to match.
Yes the heads are sufficent for a 331ci motor, while they would not be my first choice they are a decent head with a valve seal swap and a few other things.
What version of the Holley head is it? Are the ped or stud mount rocker? 1.94" or 2.02" intake valve?
FWIW, my old 8.8:1compression 302 with the Holley heads, intake, etc went mid 11's @ 117mph at 3300lbs
What version of the Holley head is it? Are the ped or stud mount rocker? 1.94" or 2.02" intake valve?
FWIW, my old 8.8:1compression 302 with the Holley heads, intake, etc went mid 11's @ 117mph at 3300lbs
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