I Might Just Know What I'm Talking About
Join Date: Jan 2000
Location: Charleston, South Carolina
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Re: 302 header options
Actually there isn't many clearance issues. The biggest hassle is getting between the gas tank and the spring shackles. The gas tank is offset to one side. I actually dropped my tank, redrilled some holes in the skid plate and rehung it centered between the shackles.
My driver's side manifold dumps DOWN... in front of the clutch belcrank, and my passenger side dumps straight out the back.
Both pipes run inside the frame rails, over the skid plate and beside the gas tank. I initially had the exhaust pointing straight back. But it was STINKY. So then I had the exhaust angled out over the spring behind the tires. But when I moved up to 37s, they ate my pipes first thing. Now I have the pipes come all the way out with a 90 degree turn out after the shackles. Dumping out on both sides.
I would think any DECENT muffler guy could install duals. Just get your manifolds figured out, and let him do the rest. If you don't mind moving the gas tank I would do it. Simple fix. Really seemed to open the one side up. And I've never had a muffler guy complain. It's actually the third set of duals i've had put on.
Let me know if you have any other questions.