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Discussion Starter #1
Will a 66 tri power fit on code 62 (400) 1968 heads? If so what kind of performance improvement do think i will get due to having larger valves? Regards...:cheers
 

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64-67 Expert
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Straight bolt-on deal. Good for a noticeable improvement in power over the Q-jet. A test was performed years ago on a '68-'69 GTO with all else being equal, and the tripower was good for a full half second gain in the 1/4 mile over the Q jet. And the Q-jet is a great set up. Go for it!
 

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I have a '66 Tri-Power on my '68 400. It's all in my '65, I love the set-up, but I don't race it or anything, just love driving and cruising with it.
 

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Discussion Starter #4
My mistake I worded the question incorrectly. What I meant to ask was do you think performance will improve with code 62 big valve heads on a 389 motor over the 66 gto head (slightly smaller valves). Tri power will be fitted aswell. Thanks again..
Combo's.
389 - tri pwr - 62 heads (big valves).?
389 - tri pwr - 77 heads.?
 
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