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Re: Peanut sized Y-pipe ???
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Originally Posted by Pauly
the LD Vortec 350's in the 1/2 tons have 1 7/8" headpipes, whil eth HD Vortec 350's in teh 3/4 ton and 1 ton trucks have the 2 1/4- 2 1/2" headpipes.
The Vortec 454 has even larger pipes, but just because the truck is a 3500 or a 1 ton doesnt mean it has a 454 as it can have a Vortec 350 as well.
My 97 1/2 ton had the dual 1 7/8" headpipes and when I went to Hooker longtubes and dual 2 1/2 headpipes the difference was very noticeable.
peace
PAuly
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Alot of the 5.7 G1500 vans had the larger pipes as well. My 1997 G1500 has the 2 1/4 head pipes that step up to 2 1/2 after the cats. I've seen the tiny little 1 7/8" pipes and had a good laugh.
I just bought a 3.4 from a Camaro that had 2 1/4" pipes running out of the manifolds on each side.
1983 G20 Conversion Van, 350 TPI, 9:1 compression, Custom Reed Roller cam, Ported 906 Vortecs, Doug Thorley Tri-Y headers, dual 2 1/2" exhaust, 4L60(1992 700r4), 3.08 gears. 7730 ECM tuned by ME! 9.14 @ 77 1/8 @ Kennedale
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