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#1
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Down pipes from HO exhaust manifolds
I am installing a 455 in my '76 GTO. It will be using the Parts Place 2.25" exit HO manifolds ( Ames sells a 2.5" version but they were on backorder. I want to run 2.5" downpipes all the way back to the mufflers. Will there be a problem mating the 2.5" downpipes to the 2,25 HO manifolds or will I need to stay with 2.25 pipes all the way back?
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#2
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I have 2 1/2 inch manifolds mated to 3 inch exhaust.
A short section of 2 1/2 inch pipe was stretched to 3 inches on one end and welded onto the three inch pipes using the 2 1/2 inch flanges
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74 Formula Below motor destroyed last fall 469, 6X-4's, 72 Intake, Ramair Manifolds. 3 inch exhaust with x-pipe Custom Roller Cam, 1.52 Roller Rockers Quadrajet done by Cliff 3:42 gears 12.061 @ 110.74 12.092 @ 112.43 12.128 @ 111.71 New motor 461 stroker Edelbrock 87 cc dport heads Performer RPM Same Ram Air manifolds, and quadrajet Results will be posted after the track |
#3
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Quote:
It was necessary to grind the exhaust pipe to clear the manifold studs |
#4
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post pics of said 76 GTO
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Everything comes and goes Pleasure moves on too early And trouble leaves too slow |
The Following User Says Thank You to Cammer-6 For This Useful Post: | ||
#5
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I have a pair of 2.25 flanges if you need some, 2 stud and 3 stud.
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#6
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I have the flanges, thanks
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