390 backfires under hard acceleration
Cargo Master
Joined: Oct 2011
Posts: 2,246
Likes: 303
From: Kenner,La.
He still has to check the relationship between the harmonic balancer and the pointer for # 1.
Edelbrock has a help line that could give some suggestions on which power valve springs and metering rods to compensate for the altitude the truck is in.
Edelbrock has a help line that could give some suggestions on which power valve springs and metering rods to compensate for the altitude the truck is in.
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jerrycarl
1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks
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1967 - 1972 F-100 & Larger F-Series Trucks
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