Hot Rod Forum : Hotrodders Bulletin Board - View Single Post - ARP bolt head/Oil pump issue
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Old 05-02-2013, 10:00 PM
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Originally Posted by Richiehd View Post
Monty, nice job, and thanks for taking the time to take and post pictures. And you should be using the Melling Select anyway. Many posts concerning the M55 pumps breaking.
there are 2 m55 pumps 1 with reinforcing ribs (old style )it gives more clearance for bolt ,the non reinforced has a thicker body (new ) ,both pumps carry same part number ,if you know the man at parts counter get him to let you open a few boxes. I have a 77 bbc pump on my sbc with a mileadon pickup and 8 qt pan I had to use a copper gasket that I don't normally use and a metal sleeve didn't trust plastic since I lost a little length in oil pump shaft with gasket, also great display,should help lots of rodders
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