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#1
05-24-2004, 06:17 AM
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My heads are back on my motor, they have had the crossovers filled with aluminum. What performace gains will I see? The center 4 cylinders should scavage exhaust better than before?
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#2
05-24-2004, 06:17 AM
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My heads are back on my motor, they have had the crossovers filled with aluminum. What performace gains will I see? The center 4 cylinders should scavage exhaust better than before?
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#3
05-24-2004, 08:32 AM
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If you have 4-tube headers, the old rule of thumb was 10 HP.
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#4
05-24-2004, 09:07 AM
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OMT, they are four tube...nice hand made x-pipe too.
I'm thinking the x-pipe will work better creating the same vacuum to all cykinders. Guy |
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#5
05-24-2004, 07:41 PM
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It was worth a tenth and a half and almost two MPH on my dads 79 GP with the 400 and #16 heads... D. Miles
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