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19Fordy · 11-18-2019, 12:13 PM

MS 8903 is an intake gasket. Here's some answers.
https://www.fordbarn.com/forum/showthread.php?p=827228

Do a HEAD GASKET SEALER "Search" and much info. will appear.
Also, check out BEST head gaskets. I use Permatex non-hardening thread sealer on all the head bolts.
DO NOT CHASE HEAD BOLT THREADS WITH A TAP as they are Henry's special clearance fits. Cleaning out these threads with tap will increase chance of leaks. Don't clean head bolt threads with a "die" either for the same reason.

11-18-2019, 12:13 PM	#2
19Fordy Senior Member Join Date: May 2010 Location: Coral Springs FL Posts: 10,941	Re: Reinstalling aluminum head questions MS 8903 is an intake gasket. Here's some answers. https://www.fordbarn.com/forum/showthread.php?p=827228 Do a HEAD GASKET SEALER "Search" and much info. will appear. Also, check out BEST head gaskets. I use Permatex non-hardening thread sealer on all the head bolts. DO NOT CHASE HEAD BOLT THREADS WITH A TAP as they are Henry's special clearance fits. Cleaning out these threads with tap will increase chance of leaks. Don't clean head bolt threads with a "die" either for the same reason. Last edited by 19Fordy; 11-18-2019 at 12:23 PM.