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#22
01-09-2022, 12:10 PM
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On a freshly restored tri-power I had a a similar problem after opening the outboard carburetors.
I had to add a heavier duty torsion spring (from a 4bbl) on the rear carb so that the outboard carburetor butterflies would close completely. You need sufficient spring pressure to return all the butterflies to idle. Mike told me I can tweak the lighter duty spring to get some more strength out of it too.
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1965 Pontiac GTO 455 w/ #48 Heads, '65 Tri-Power Modern Muncie M22W 3.55 Rear Differential |
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