Need some minor CNC work

[SixSpeed454SS]

@beat90tsi

I have a 78 CJ7 with a 360, and I’m running a GM TBI system on it. I just switched from a 4bbl manifold to a 2bbl to get more appropriate flow to the engine. I drilled new holes in the adapter plate, but now my studs hit the TBI when I try to put it on. I need someone to machine out the holes so I can use bolts, and the heads will sit below the surface, and my TBI can sit flush. I was going to attack it with a carbide bit, but figured that would be really messy, and considered a drill press, but I don’t really want a tapered seat.

Where is the best place to go locally for this kind of a small job?

Thanks,
Jon

What kind of adapter plate you running? I know Holley makes one that is about 3/8" thick. I used it when I ran my TBI on a dual plane manifold several years back. It will adapt GM TBI to 4bbl manifold, but I would think it’d be easier to work with instead of GM TBI adapter (if that is what you are using).

Just my .02