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dist gear shim

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bobsterfl View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote bobsterfl Quote  Post ReplyReply Direct Link To This Post Posted: Mar/13/2018 at 4:05pm
Got this answer from RobbMc performance some time ago.  He was formerly an engineer at Mallory (I believe) so has some experience with these things.

 
"The minimum endplay is .010" to allow for expansion of the aluminum housing. Maximum endplay is debated but I like to keep it under .030".
 
When you drill the hole, make sure the hole is lined up with the oil pump drive tang.
 
Use the washer between the gear and the housing but make sure the OD of the washer is no larger then the root diameter of the gear teeth or the washer will rub on the cam gear. I've seen Mallory AMC distributors supplied with the Chevy washer which is too big. If I remember correctly, the AMC washer is 7/8" OD.
 
Be sure you have the washer in place when you drill the shaft."

Robb make some good products for AMC's.  Check his website at http://www.robbmcperformance.com/
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