Dual Exhaust for a 85 GP with 305

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Nov 5, 2009
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New to the site. Just bought an 85 GP with a 305. Would like to add a dual exhaust either off of the manifolds or cat back. Anyone have recommendations? Prefer out of the box, and mild tone. Any help would be great.
 

Munkey B

Greasemonkey
Jul 5, 2008
161
1
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Detroit, michigan
i had mine done.
but
i had a buddy do mine.

i used a high flow cat and had him bend up the Monte SS style duals.
paid $250. used dynomax mufflers.
 

79GP6.6L

Greasemonkey
Jul 7, 2006
218
0
0
Upstate NY
I built my own because I wanted 3" down pipes... but you wouldn't need anything like that on a 305.

Summit has a lot of reasonably priced G-body systems.

http://www.summitracing.com/search/...ust/Section/Exhaust-Systems-Kits/?Ns=Rank|Asc

sum-680146_w.jpg


If you buy one of these, just keep in mind that most of them are designed for headers. If you want to hook duals up to your stock manifolds, you will need a set of manifold down pipes as well.
 

megaladon6

Comic Book Super Hero
May 29, 2006
4,006
15
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Danbury, CT
http://www.pypesexhaust.com/sys-mc.html
high quality, stainless steel, good warranty, lots and lots of people on this site have and recommend them.
for a 305 get the 2.25in kit. for a 350-400 street motor the 2.5 and for full race go 3.0
 
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