Quick question.

What are the dimensions of the Distributor cover bolts.

I bought a cover, but no screws could be found.

Anyone know the length, diameter and thread and whatever else is nessecary?

Thanks.

 

The aluminum TPI plenum extension's screw are different in size than the plastic one.
You can get the correct screws from any GM dealership or Hawks Third Gen also have them....

 

actually, they have the same threads, just different size heads. the aluminum ones have a smaller recess for the heads of the screws.

 

I have a plastic cover.

 

The thread is M4 x 0.7. The original screws were 13mm long, had a button head with a T20 recess, and included a special shouldered SEMS washer. You should be able to use any M4 0.7 from 10-15mm and a standard flat washer.

Good luck finding those at places like Homo Depot. You'll need to find a REAL hardware store or specialty distributor like Fastenal.