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250 exhaust manifold #1451945 05/17/2022 5:15 PM
Joined: Feb 2000 Posts: 5,223 Lee's Summit Mo. 64086 J Joe H 'Bolter
Joe H 'Bolter J Joined: Feb 2000 Posts: 5,223 Lee's Summit Mo. 64086	Has anyone used one of the new exhaust manifolds being sold for the 230-250-292's? I see them from $225 and up. Mine has wrapped enough that it won't seal the inner ports. I had it off for awhile and now it won't seal back up. Looking down the row of ports it's shaped somewhat like a banana, no machine is going to fix it. 1937 Chevrolet Inline-powered Streetrod

Re: 250 exhaust manifold Joe H #1452276 05/21/2022 3:01 AM
Joined: Dec 2018 Posts: 2,450 Illinois F fixite7 'Bolter
fixite7 'Bolter F Joined: Dec 2018 Posts: 2,450 Illinois	Joe H Better look at the head,they warp like a chunk of firewood and sometimes have to be cut on the manifold side too.

Re: 250 exhaust manifold Joe H #1452299 05/21/2022 1:01 PM
Joined: Jun 2011 Posts: 5,096 Longmont, CO E EdPruss Crusing in the Passing Lane
EdPruss Crusing in the Passing Lane E Joined: Jun 2011 Posts: 5,096 Longmont, CO	Remember to finally tighten the inter manifold bolts after head bolts are tightened! Ed '37 GMC T-18 w/ DD 4-53T, RTO-610, 6231 aux., '95 GMC running gear, full disc brakes, power steering, 22.5 wheels and tires. '47 GMC 1 ton w/ 302, NP-540, 4wd, full width Blazer front axle. '54 GMC 630 w/ 503 gasser, 5 speed, ex fire truck, shortened WB 4', install 8' bed. '55 GMC 370 w/270, 420 4 speed, grain, dump bed truck from ND. Works OK.

Re: 250 exhaust manifold Joe H #1452302 05/21/2022 1:51 PM
Joined: Feb 2000 Posts: 5,223 Lee's Summit Mo. 64086 J Joe H 'Bolter
Joe H 'Bolter J Joined: Feb 2000 Posts: 5,223 Lee's Summit Mo. 64086	Head is OK, manifold not so much. It wasn't the best when I put it on years ago, I found a GM manifold a friend had, it cleaned up and sealed right up. I'am back on the road in peace and quite once again. 1937 Chevrolet Inline-powered Streetrod

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