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1hotboss

Well-known member
Joined
Jun 12, 2015
Messages
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Location
Canada
My Car
1970 Boss 302
What size primaries should I use on 1.71" exhaust valves....1 3/4 or 2

Thanks

 
What size primaries should I use on 1.71" exhaust valves....1 3/4 or 2

Thanks
I am no expert but I think more info would be needed in order to make an informed recommendation.

Displacement?

Max HP and rpm?

Peak torque rpm?

Intended usage?

There have been books written on this subject.

 
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