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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: Apr 2010 Posts: 48 Wrench Fetcher | | Wrench Fetcher Joined: Apr 2010 Posts: 48 | Hi All, I have a 1970 c 50 with 292 and have installed aluminum intake and headers. The Headers keep blowing gasket and the shop says the head is warped. It only has 8000 miles on original engine. What do you think. | | | | | Joined: Nov 2005 Posts: 6,100 'Bolter | | 'Bolter Joined: Nov 2005 Posts: 6,100 | Hy Crockbuyer, I would think it's the header that's warped rather than the head. | | | | | Joined: Nov 2002 Posts: 1,002 Shop Shark | | Shop Shark Joined: Nov 2002 Posts: 1,002 | Check the head with a straight edge, you should be able see any warp, then check the headers. IF your headers are like the two that I have, the pipe has been welded to the flange on the head side. You can flatten out the welds some depending on how good you think the weld penetration is. Use two gaskets and hi temp RTV on all three surface. Torque down, run to a good temp, re-torque. That should help. The next set of headers I get will be Fenton.
Larry
I don't own a vehicle that isn't old enough to drink.
| | | | | Joined: Jan 2001 Posts: 5,337 'Bolter | | 'Bolter Joined: Jan 2001 Posts: 5,337 | It is not that the head warps but that it rusts away around the exhaust ports.
See the USA in your vintage Chevrolet! My Blog | | | | | Joined: Jun 2004 Posts: 8,597 Riding in the Passing Lane | | Riding in the Passing Lane Joined: Jun 2004 Posts: 8,597 | 292 engines run extremly hot exhaust systems when used in the larger trucks. We contantly replaced gaskets & manifolds back when I worked on fleets of Step Vans. There used to be available a stainless steel gasket for them but they discontinued them many years ago. I would check & see if someone has a solid copper gasket available for it. Or possibly running without a gasket on the ex. ports like the V-8s. Make sure there is as little back pressure as possible. Low restrictive mufflers. That business about the head being warped is a cop out.
They say money can't buy happiness. It can buy old Chevy trucks though. Same thing. 1972 Chevy c10 Cheyenne SuperIn the Gallery Forum | | |
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