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Bored&Stroked · 05-04-2024, 12:48 PM

If your distributor (hopefully NOT a Crap-O-Matic) has the longer shaft (down below the gear) then try to use the timing cover with the boss that accepts the lower shaft.

I've only seen this on the aluminum covers (Not all of them) - I've not seen that extra boss on the cast-iron covers. The boss helps to center the distributor (as the shaft rides in it) - and helps reduce deflection/play in the assembly. This also helps keep the timing from fluttering.

05-04-2024, 12:48 PM	#155
Bored&Stroked Senior Member Join Date: Jan 2011 Location: Central Ohio Posts: 5,248	Re: 276 stroker from 35 years of parts If your distributor (hopefully NOT a Crap-O-Matic) has the longer shaft (down below the gear) then try to use the timing cover with the boss that accepts the lower shaft. I've only seen this on the aluminum covers (Not all of them) - I've not seen that extra boss on the cast-iron covers. The boss helps to center the distributor (as the shaft rides in it) - and helps reduce deflection/play in the assembly. This also helps keep the timing from fluttering.