Hedman Hedders.
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Joined: Jan 2005
Posts: 291
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From: Illinois
Car: 1991 z28 camaro
Engine: 350 TPI bored .060 over
Transmission: 700R4
Hedman Hedders.
What kind of gains did you guys get in RWHP from installing these headers. I am trying to find the headers with the most gains and flow, and these seem to be moving into number 1 on my choice list. I am talking about the Long Tubes, and on a 350 L98.
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From: Worcester, MA
Car: 86 T/A
Engine: HSR 355
Transmission: 700R4
Axle/Gears: 2.77 posi
Depends how restrictive the rest of your setup is. Are you getting a new Y pipe, hi flow cat, diameter I-pipe, new muffler?
Joined: Jun 2002
Posts: 13,576
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From: Harford County, MD
Car: camaro sportcoupe
Engine: 7.0L
Transmission: G-Force GF5R
Axle/Gears: Moser 9"
you'll need to fabricate a new y-pipe as the longtubes end in a completely different location then stock. these headers are perfect for running true duals. i have them and am very pleased with the setup.
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