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Post by wordy777 on Feb 13, 2006 22:22:22 GMT -5
Hi, I have 1 5/8 longtube headers now I wondered if i really need to move to 1 3/4 or 1 7/8 for significantly more power or will i just lose torque. Heads are Proaction 200cc, dual plane rpm airgap, 850cfm mighty demon, 3500 stall, on 3200 lb corvette
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Post by wordy777 on Feb 13, 2006 22:24:53 GMT -5
sorry my cam is Hr 288 with .52 lift
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Post by Smoke on Feb 14, 2006 2:42:48 GMT -5
It would be worth upgrading to 1 3/4" as cheap as they are. Measure your exhaust port. I bet they are around 1 3/4" I wouldn't put anything smaller than 1 3/4" on a 383.  |
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Post by Bill on Feb 14, 2006 7:57:30 GMT -5
Depends on what your max rpm is. With a hyd roller it most likley won't go over 6500, I would run a 1 3/4" nothing larger or you will lose mid range and low end.
Bill
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