alternator bracket hole on truck block
Thread Starter
Staging Lane
Joined: Jan 2014
Posts: 55
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alternator bracket hole on truck block Im using an iron truck block with f body accessories. I know the drilling and tapping of the top mounting hole for the alternator bracket is pretty straight forward. I was wanting to be sure of the hole size. From what I've heard the final bit size should be 11/32nds" and the tap is a M10×1.5 is this correct? Also how deep should the hole/threads be into the casting?
Joined: Aug 2007
Posts: 24,241
Likes: 89
From: Turnin' Wrenches Infractions: 005
Unless you have a blind hole tap you're gonna need to go in pretty far. It also depends on the length of your bolt which you can determine how much sticks through the bracket and know you need at least that much tapped. If you have good drill bits it's not difficult at all.
Thread Starter
Staging Lane
Joined: Jan 2014
Posts: 55
Likes: 0
Unless you have a blind hole tap you're gonna need to go in pretty far. It also depends on the length of your bolt which you can determine how much sticks through the bracket and know you need at least that much tapped. If you have good drill bits it's not difficult at all.
TECH Fanatic
Joined: Aug 2011
Posts: 1,324
Likes: 6
From: Marengo, Ia
I'm surprised no one makes a kit to make this a more foolproof job. A bushing/drill bit guide that fits in the alternator bracket hole, a drill bit with a built in stop so you can't drill too deep, and the correct tap.
