I have 2 1/2 inch manifolds mated to 3 inch exhaust.
A short section of 2 1/2 inch pipe was stretched to 3 inches on one end and welded onto the three inch pipes using the 2 1/2 inch flanges
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74 Formula
469, 6X-4's, 72 Intake, Ramair Manifolds.
3 inch exhaust with x-pipe
Custom Roller Cam, 1.52 Roller Rockers
Quadrajet done by Cliff
3:42 gears
12.075 @ 112.70
12.092 @ 112.43
12.128 @ 111.71
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