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Jul 21st, 2025 | | | | Joined: Nov 2012 Posts: 431 Stovebolt Photo Moderator | | Stovebolt Photo Moderator Joined: Nov 2012 Posts: 431 | My ODSS brothers, Mike B, Chris and 53-green 1-ton helped me get my 216 started last year. I was never able to seat my intake/exhaust manifolds seated sqaurely against the head. I tried everything - even a different manifold set. Then it hit......I looked closer at the rings that go between the intake and head. They look to be home-made and of different depth. And too deep. I bet they are made from old exhaust pipe stock. I have 2 questions: 1) For test stand purposes can I run the motor without them, 2) are after market replacements available. If not I guess I will grind these down an 1/16" or so to get them to seat without creating a holiday between the manifold and the head. Thanks - Joe PS: Mike B - I had that Zenith carb rebuilt, what a difference !
1947 - 3800 dually known as "Deadwrench"Link to a few photosIn this world there are givers and takers. The takers eat well, the givers sleep well. | | | | | Joined: Feb 2004 Posts: 28,674 Kettle Custodian (pot stirrer) | | Kettle Custodian (pot stirrer) Joined: Feb 2004 Posts: 28,674 | It's a pretty simple task to narrow your home-brewed rings a little, but yes, replacements are available. There's even a set of stepped rings for fitting a 216 manifold to a 235 head, which has different manifold and head hole diameters. I'd use my lathe for fitting purposes, but a vise and a file will also work if you support the rings with a piece of dowel rod or something similar to keep from collapsing it while you file or grind the thickness down a little. Try some of the antique parts vendors who advertise here.
Jerry
"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!
| | | | | Joined: Sep 2009 Posts: 123 'Bolter | | 'Bolter Joined: Sep 2009 Posts: 123 | | | | | | Joined: Apr 2010 Posts: 232 'Bolter | | 'Bolter Joined: Apr 2010 Posts: 232 | Patricks has the stepped adapter rings in his catalog. | | | | | Joined: Jun 2011 Posts: 5,096 Crusing in the Passing Lane | | Crusing in the Passing Lane Joined: Jun 2011 Posts: 5,096 | I made some for my 302, just get some tubing that is too big, cut a piece out 'til the correct dia., then weld if you wish.
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.
| | | | | Joined: Nov 2012 Posts: 431 Stovebolt Photo Moderator | | Stovebolt Photo Moderator Joined: Nov 2012 Posts: 431 | I see where this is going, I will work with the rings I have by sanding/grinding them until I get a flush fit. Thanks for all the suggestions Bolters.
1947 - 3800 dually known as "Deadwrench"Link to a few photosIn this world there are givers and takers. The takers eat well, the givers sleep well. | | |
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