#1  
Old 02-23-2023, 09:22 PM
drewm drewm is offline
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Default 1957 - 1966 Tri-Power Jet Sizes

Did a google search, but no luck. Anyone know what size jets would have originally come in a 66 tripower, manual trans? I just started working on my tripower and was just curious if anyone had done anything in the past. Opened up the end carbs, and they have 68's. Haven't looked at the center carb yet.

Thanks
Drew

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Old 02-23-2023, 10:11 PM
Goatracer1 Goatracer1 is offline
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You didn't say what car so here's both. T/8, P/8 pn: 7008668 front and rear
T/8 pn: 7008661 center
P/8 pn: 7008662 center
Last 2 digit are the jet sizes.

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Old 02-23-2023, 10:26 PM
drewm drewm is offline
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Quote:
Originally Posted by Goatracer1 View Post
You didn't say what car so here's both. T/8, P/8 pn: 7008668 front and rear
T/8 pn: 7008661 center
P/8 pn: 7008662 center
Last 2 digit are the jet sizes.
I forgot, its a GTO. And thank you for the answer.

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Old 02-24-2023, 05:00 AM
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Kenth Kenth is offline
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1966 T/8 389 cui M/T and P/8 421 cui M/T uses the same 7026075 center Tri-Power carb with #62 jets.
1966 T/8 389 cui M/T with A.I.R. uses the 7036175 center Tri-Power carb with #61 jets.

1966 T/8 389 cui uses #68 jets in outer carbs, and 1966 P/8 421 cui uses #73 jets in outer carbs.

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Old 02-26-2023, 03:29 PM
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Dick Boneske Dick Boneske is offline
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This should be a sticky. Here are all the Pontiac Tri-Power jet sizes.
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Old 02-26-2023, 04:28 PM
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All Pontiac Tri-Power carbs uses #70086xx 60° Approach (Long Taper) jets, except 1957-58 end carbs and 1965 421 A/T center carbs.

1957-58 end carbs and 1965 421 A/T center carbs uses #70026xx 60° Approach (Short Taper) jets.
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