Old 11-16-2019, 08:12 AM
Paul E Paul E is offline
Senior Chief
Join Date: Oct 2003
Location: Oshkosh WI
Posts: 293

Do not make a bigger hole have it machined as an oval. Could do with a small round stone and dremel tool. Tape up inside cover to make clean up easier.

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Old 11-17-2019, 10:50 PM
64speed's Avatar
64speed 64speed is offline
Ultimate Warrior
Join Date: Jul 2003
Location: Westminster S.C.
Posts: 4,663

Well I tried one more set. I drilled out all four holes two drill bit sizes bigger than stock. Not only would they not fit on the set screws but I put factory valve covers on and they fit except for hitting the roller rockers. I am sucking it up and buying the Edelbrock. Donít even try the procomp or trans dapt brand they simply do not fit

Tried to list all the specifics but ran out of room. Suffice to say it will be a nice 64 Tempest Custom.

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