Old 11-16-2019, 08:12 AM
Paul E Paul E is offline
Senior Chief
Join Date: Oct 2003
Location: Oshkosh WI
Posts: 267

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: 4,351

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

1964 Tempest Custom
Original 326 Auto with power steering, brake, and dealer installed non working AC.
Built a custom roller cammed 467 all forged internals. TKO 600 trans with Ford 9 inch from Quick Performance with 3.70 geared aluminum thru bolt center section with billet pinion support with an Eaton tru trac. Plans are for car to be Silver Mist Gray with Dark Blue Interior. Keeping bench seat and adding air conditioning.

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