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'87 302ci heads . . . Need Help!
What size are the holes for the bolts that hold on the exhaust on the heads?
Seems to be metric thread, want to be sure, someone...... :confused: |
They should be 3/8 x 16.
David |
3/8 x 16 only went in about 1 or 2 threads before they stopped turning.
Tried a couple different holes but the same result. Do not have any metric on hand to try....... :confused: |
See if a 3/8 NC tap will go in without a lot of effort. Maybe there is corrosion in the threads.
Rick |
head bolts
I believe a 7/16 diameter head bolts on late 302's and 1/2 diameter bolts on 351 heads. I think you will need a busshing for the 7/16 bolts. I got mine from ARP.
later Dennis |
A 3/8" course tap seems to go thru with "pressure" on it....
Can these threaded holes get "warped" some how? |
most likely corrosion from the bolts that were in there before.
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