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Old 03-03-2026, 07:43 AM
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J GLASGO J GLASGO is offline
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HO cars also got bigger engine pipes. 2 1/4 vs 2

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Old 03-03-2026, 08:30 AM
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Originally Posted by J GLASGO View Post
HO cars also got bigger engine pipes. 2 1/4 vs 2
Wow. Didnt catch that, ever. 2" on STD GTO?!. Maybe 2 1/4" headpipes. Would guess 2 1/2 headpipes. After decades of non-stock EXH, Im caught flatfooted for stock headpipe diameters.

i thought 68+ used 2 1/2 with 2" tails.

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