I am installing an HEI distributor in my 57 GMC this weekend.
Specs for the HEI call for about 0.010" end play in the shaft.
The one I have has considerably more than that, otherwise it
appears to be in real good condition. Looks like all I need
to do is measure the endplay, knock the roll pin from the gear,
remove the gear, add shims = 0.010 less than the measured play,
replace the gear, reinstall the roll pin and check for proper
clearance. My problem is I don't know where to find proper
shims. Any ideas??
-----Original Message-----
From: Woody [mailto:woodrow@isomedia.com]
Sent: Saturday, June 09, 2001 11:32 AM
To: oletrucks
Subject: Re: [oletrucks] tap and dye's 55TF
The general rule of thumb for tap drill size is "Bolt diameter minus one
pitch." For example, to figure the drill size for a 3/8-16 tap, you would
divide one inch by the number of threads, in this case 16.
This gives a result of .0625 inches. By subtracting this from 3/8 (.375)
you get .3125 which is equal to 5/16 which is the drill size for 3/8-16.
This works for all V-type threads, including metrics.
oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959
oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959
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