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12-13-2017, 12:04 PM | #1 |
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Aftermarket/Replacement Cylinder Head Rule Change
Any News as to how the HP factors will be effected with the new rules combining them with OEM heads?
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12-13-2017, 01:39 PM | #2 |
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Re: Aftermarket/Replacement Cylinder Head Rule Change
Where are you seeing the aftermarket head rule I am missing something ? I know several combos allow them but I didn't see any new rule about them
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12-13-2017, 01:59 PM | #3 |
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Re: Aftermarket/Replacement Cylinder Head Rule Change
Its coming out with the HP releases next week. NHRA is deleting all the different HP factors and combining them all in to one factor for each combo that has approved aftermarket heads.
I was wondering if anyone knew how they were going to determine the new "single HP factor" where the OME head was rated higher than the aftermarket head HP factor and vice-a versa? |
12-13-2017, 02:41 PM | #4 |
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Re: Aftermarket/Replacement Cylinder Head Rule Change
Cylinder Head rule has NOT! been approved yet, they are having another meeting next week
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12-13-2017, 02:51 PM | #5 |
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Re: Aftermarket/Replacement Cylinder Head Rule Change
Nice, and you guys think that there are NO crate motors in NHRA....
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12-13-2017, 03:29 PM | #6 |
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Re: Aftermarket/Replacement Cylinder Head Rule Change
Maybe Mike Crutchfield can give us an update.
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12-13-2017, 04:03 PM | #7 |
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Re: Aftermarket/Replacement Cylinder Head Rule Change
Its getting real hard to find some of the older factory heads that are 40 years since they have been produced. I welcome the ability to start with a brand new casting. Just keep the original valve size, port volume and chamber volume as original on the NHRA head CC volume list
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Mike Pearson 2485 SS |
12-13-2017, 04:13 PM | #8 |
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Re: Aftermarket/Replacement Cylinder Head Rule Change
Give everyone a stock replacement aluminum intake too and there you go.
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Chris Bowman The Mountain State Mustang 1984 Mustang GT350 |
12-13-2017, 04:21 PM | #9 |
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Re: Aftermarket/Replacement Cylinder Head Rule Change
Just say "no".....to aftermarket heads.
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Jim Kaekel 3836 STK |
12-22-2017, 10:03 AM | #10 | ||
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Re: Aftermarket/Replacement Cylinder Head Rule Change
Quote:
Quote:
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Michael Beard - NHRA/IHRA 3216 S/SS |
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