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Old 09-06-2019, 03:53 PM   #1
88notchback
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2" primary swap header

Anyone know a company that has swap headers for my 6.2 ls9 that have 2" primaries?
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Old 09-06-2019, 11:56 PM   #2
mongocanfly
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Re: 2" primary swap header

yikes... why so big?...your gonna have enough trouble squeezing a normal set in there ...88 truck?
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Old 09-07-2019, 07:26 AM   #3
88notchback
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Re: 2" primary swap header

Sorry I should have put that info. Truck is a 1970 swb. Too 600 trans and putting a moser 9" in it. Motor made 850rwhp in the car I'm pulling it from. If applicable id like not to restrict it more than it was. The best I can find so far is 1 7/8" which might have to be sufficient.
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Old 09-07-2019, 07:54 AM   #4
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Re: 2" primary swap header

Hot rod magazine did a test on a LS called ( big bang theory)...they were turning 1200hp with a set of jba shorty headers...I think they were 1-5/8" primarys...
I think 1-7/8"" would be fine
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RIP Dad
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1981 C30 LQ9 NV4500..http://67-72chevytrucks.com/vboard/s...d.php?t=753598
Mongos AD- LS3 TR6060...http://67-72chevytrucks.com/vboard/s...34#post8522334
Columbus..the 1957 IH 4x4...http://67-72chevytrucks.com/vboard/s...63#post8082563
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Old 09-08-2019, 11:31 AM   #5
88notchback
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Re: 2" primary swap header

I'll look into that. Thank you bud.
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