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

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.

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.

This should be a sticky. Here are all the Pontiac Tri-Power jet sizes.

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.