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02-11-2021, 10:20 PM | #1 |
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Re: Typical header dimensions
I run a 402 BBC in stock. I use a 1 7/8 to 2 inch primary. I'm sure you are not that far off with a 2 inch Hooker. Most of the guys that run BBC high HP cars in stock use a 2 to 2 1/8. I would be surprised if you could pick up a tenth with a header change. For the kind of money you would spend on a good set of headers you could find more ET with something else. BP
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02-12-2021, 07:42 AM | #2 | |
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Re: Typical header dimensions
Quote:
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02-13-2021, 01:03 PM | #4 |
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Re: Typical header dimensions
A little off topic, but just wondering anyone's opinion on dimpling tubes to fit.
Engine Masters (Frieberger) has video on just crushing tubes to little effect |
02-13-2021, 06:32 PM | #5 |
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Re: Typical header dimensions
Jack Davis (RIP) told me that you could ding the Header quite a
bit without hurting Air Flow. He has been gone a while but I still replicate the Step headers and Merged Collector he made for me on all my cars!
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John Irving 741 Stock 741 Super Stock |
02-13-2021, 06:47 PM | #6 |
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Re: Typical header dimensions
Years ago my brother crushed a primary tube taking the car out of a trailer. He ran the car and it did nothing to the ET. BP
Last edited by B Parker; 02-14-2021 at 01:41 PM. |
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