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Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
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For helping keep this great
old truck web site
on the Internet for over 30 years! and not clogged down
with Ads!  Again, thanks!
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#61952 06/20/2006 9:59 PM | Joined: Dec 2003 Posts: 2,733 Shop Shark | | Shop Shark Joined: Dec 2003 Posts: 2,733 | Billy...I have to agree with AD-52. Without backpressure no engine runs as well as it will with some. If your running a split or dual exhaust manifold keep your exhaust to 1.75 into the muffler. Dual 1.75 or 2" outlets work OK on a one-in two-out muffler. IMO 2.25" is quite large for most Chevy inlines. Why don't you check out Flowmaster and/or Gibson websites and see what they have to say about it.
Bigger isn't always better. | | |
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