[QUOTE=Prowbar;78222]
Quote:
Originally Posted by 63gmc4x4
Good to hear that it fits! Was the sealing surface left stock on your 401? (i.e. with the serrations?)
@Olsonsgaskets I believe the plugs is concave to clear the 12 point bolt head. Suppose you could make them a little shorter to cut down production costs.
If you need any measurements of the NOS rubber seal (17091) that I posted pictures of, contact me.
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Yes very light, but looks like the old seal was sealing just fine!