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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!
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| | | | Joined: Mar 2004 Posts: 154 Member | | Member Joined: Mar 2004 Posts: 154 | i plan on having 3x1's on a 292. what would split exhaust do, versus a set of headers? like..pros and cons of the 2 systems?
thanks.
.later days.
.desperado.
.sam.
1969 K20 , with a '67 front clip. fleetside. 292, 3x1 offy, headers. sm465 4spd. getting put back together, almost ready for paint. doing it all myself. 19 and lovin' it. "proper" is so over-rated. .later days. .sam.
| | | | | Joined: Sep 2003 Posts: 1,820 Shop Shark | | Shop Shark Joined: Sep 2003 Posts: 1,820 | Headers will look better, sound better and up the performance!
"Truckin' Around .......... Since 1937!" My name is Joe and I am addicted to Classic Country Music. I just can't hep myself.Operators are standing by to take your calls! Now cruising in the Passing Lane | | | | | Joined: Dec 2003 Posts: 510 Shop Shark | | Shop Shark Joined: Dec 2003 Posts: 510 | I found the stock exhaust manifold on my 292 to be extremely restrictive. Even if I'd split it, the restriction at the head would have remained.
So I went with Hedman Hedders and don't regret it at all. They fit pretty well (I needed to do some grinding and shaping to get them to play well with the Offy manifold) and from the sound, they've improved the flow about 400 percent. They also sound great with the cherry bombs on 'em.
The thing that convinced me was when I had a dream one night about cutting the muffler off the truck with my Sawzall. I woke up the next morning and thought, "that's not a bad idea!" So I grabbed the Sawzall and hacked the rear 3 feet off the exhaust, thinking that the muffler had to be in that section. Wrong! No muffler! It was already a straight pipe and I didn't even know it!
That convinced me that the manifold was WAY too restrictive. When I put the headers on and fired it up with no mufflers at all....well, it was a totally different story. It sounded like a real motor...and WWIII going off right under my feet.
So if ya want performance, I don't think you'll get it from the stock manifold, even if you split it. If you want a quiet exhaust...well, that's a different story. | | | | | Joined: Oct 2003 Posts: 445 Shop Shark | | Shop Shark Joined: Oct 2003 Posts: 445 | the cost of your toy.myself I would go with the headers.less time at the muffler shop bending pipe
dan-pa
| | | | | Joined: Aug 2004 Posts: 90 Member | | Member Joined: Aug 2004 Posts: 90 | i like my langton 3-3 splits w/ a clifford water heated intake on my 292. very little to do to make them fit right
Gooday
Jim
small wheel moves by fire and rod,
big wheel fires by the grace of god,
everytime that wheel turns round,
bound to cover just a little more ground.
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