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Old 10-07-2010, 08:09 PM
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GM 088 head shoulder bolt question

I've got a set if 088 GM 502 heads. Anyone know what is involved in machining them for screw in studs? Factory they had non adjustable shoulder bolts rather then studs. Is it a matter of drilling out and tapping for 7/16 studs, or is there other machining needed? Thanks
Shawn

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Old 10-07-2010, 08:54 PM
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I tap them for 7/16 thread all the time. I wouldn't do it free hand tho. I use a tilted fixture on machine.
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Old 10-07-2010, 09:10 PM
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Quote:
Originally Posted by BOBCRMAN@aol.com
I tap them for 7/16 thread all the time. I wouldn't do it free hand tho. I use a tilted fixture on machine.
So no other machine work is needed? I thought maybe the bosses needed milled? Good to know.
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Old 10-08-2010, 05:45 AM
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The only thing that changed was the thread size.
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Old 10-08-2010, 05:54 AM
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I would think the boss would need faced if using a stud w/a hex and shortened if using guide plates.
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Old 10-08-2010, 06:02 AM
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Original stud has hex. Only change was thread size. All BBC use guide plates stock.
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Old 10-08-2010, 06:36 AM
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Quote:
Originally Posted by BOBCRMAN@aol.com
Original stud has hex. Only change was thread size. All BBC use guide plates stock.
My mistake- had just been reading a Vortec thread, was thinking sbc.
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