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Author Topic:   H or no H
BLUE
Journeyman

Posts: 93
From: COLLINSVILLE, IL
Registered: May 2002

posted 07-28-2002 12:09 PM     Click Here to See the Profile for BLUE     Edit/Delete Message   Reply w/Quote
has anyone done a dyno on an h pipe and then on just straight pipes,or can someone tell me the difference between the two. i work part time at my buddies muffler shop and i can bend my own straight pipes and weld in the o2 bungs for about $25, if i didnt have to put the cross pipe on, it would be a much easier job.

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Rory McNeil
Gearhead

Posts: 1210
From: Surrey, B.C. Canada
Registered: Nov 2000

posted 07-28-2002 03:08 PM     Click Here to See the Profile for Rory McNeil   Click Here to Email Rory McNeil     Edit/Delete Message   Reply w/Quote
On my 302 Fairmont, back when it only ran low 14`s, with the C4, I have 1 1/2" Heddman full length headers, that only had 2 1/2" pipe running from the collectors to the mufflers (stock 88 Mustang 5.0 mufflers, no cats). I ran it for quite a while like this, then I added a section of 2 1/2" pipe from side to side, under the tailhousing. Back to the strip, it did not show any improvment or negative results, ran the same, but did sound a tad nicer. Now this is not to say that every car will respond similarly, but it do anything for this car, which is fairly mild. It DID make pulling the trans much harder though.

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78 Fairmont 428 4 speed [email protected]
80 Fairmont 302 5 speed [email protected]
85 Mustang NHRA Stocker under construction, 302 5 speed

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BLUE
Journeyman

Posts: 93
From: COLLINSVILLE, IL
Registered: May 2002

posted 07-28-2002 10:22 PM     Click Here to See the Profile for BLUE     Edit/Delete Message   Reply w/Quote
do i need to weld in a pipe for the air tube or can i plug the air tube up and be alright?

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