Poor running motor/ Pontiac Gregg
It's the rear gear ratio ! For GOOD all around performance and good highway, get 3:55's if it's a 12 bolt, 3:42's if it's a 10 bolt.
What kind of exhaust manifolds, Stock ? or Ram Air 3 ? If stock, that's a BIG problem....
Like running your car with a potato stick in the tail pipe. Remember doing that to the school bus ?
Pontiac Gregg
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Greg Merrick
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