Topic: Shorty or long tube headers?
in Forum: C3 Engines
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Long headers are always better.
The factory does not put them on partly due to cost, part due to space limitations, part due to assembely limitations, part due to emissions. Plus most people don't know the difference, or care. We do.
Ken Styer
The factory does not put them on partly due to cost, part due to space limitations, part due to assembely limitations, part due to emissions. Plus most people don't know the difference, or care. We do.
Ken Styer
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Welch, MN - USA
Joined: 7/18/2003
Posts: 201
Vette(s): 1974 Black 454 Stingray coupe, turbo 400 tranny, barry grant 750 carb, hooker super competition headers, moves along!
i installed hooker super competition long tube headers on my 74 ls4 454, made a world of difference, if you're really looking for an improvement, i'd definitely recommend them.
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Lifetime MemberCHARLOTTE, NC - USA
Joined: 6/18/2003
Posts: 394
Vette(s): 1974 Stingray coupe; 2nd-Year One crate engine 408/408
2000 DBGM C5 coupe: Stock
| i installed hooker super competition long tube headers on my 74 ls4 454, made a world of difference, if you're really looking for an improvement, i'd definitely recommend them. |
I'm glad to hear that. I'm having the same ones installed on our 74.
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BRADENTON, FL - USA
Joined: 8/4/2002
Posts: 669
Vette(s): 1972 convertible 350 auto trans, delux int, air, ps, pb, t/t wheel, pw, 79,000 org miles Rare one year only color
diameter of the tubes is also very important. as stated above too large of a diameter will lessen the scavaging effect and hurt low end power, too small diameter will increase low end power at the cost of high RPM power. I suggest to error on the smaller size as most driving is done at lower RPM
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What is the correct pipe diameter for a high compression 350?
'69 350/350 conv.
Former Member
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BRADENTON, FL - USA
Joined: 8/4/2002
Posts: 669
Vette(s): 1972 convertible 350 auto trans, delux int, air, ps, pb, t/t wheel, pw, 79,000 org miles Rare one year only color
1-5/8" diameter for low HP 1-3/4" for higher HP. I wouldn't go any larger than 1 3/4
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in Forum: C3 Engines
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