Harmonic Balancer Bolt Size

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Harmonic Balancer Bolt Size

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nate_o

Post subject: Harmonic Balancer Bolt Size

PostPosted: Thu Jan 26, 2006 9:09 am

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4 BBL ''Hyper-Pak''

Joined: Tue Jan 14, 2003 8:42 am
Posts: 34
Location: Richwood, Ohio
Car Model:

Does anyone know the size of the bolt that would screw into the crankshaft so you can install the harmonic balancer?? This is on an 81 slant. Thanks

_________________
81 1/2 Ton, 2 WD,225, 4 Sp With O/D
81 3/4 Ton, 4 WD, 360, 727
70 1 Ton, 4 WD, 225, 4 Sp

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relic-lover

Post subject: Crank Pulley Bolt

PostPosted: Thu Jan 26, 2006 9:45 am

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EFI Slant 6

Joined: Tue Jun 03, 2003 9:42 pm
Posts: 358
Location: San Diego, California
Car Model:

It is 3/4 inch diameter fine thread 1 1/4 inch long. There is a thick washer
also about 1/4 inch thick. I used a clevite kit for a mopar SB.

The 1 1/4 bolt would not quite pick up the threads, since my balancer would not slide onto the crank at all. I got a stack of washers and 2
longer (1 1/2 and 2 1/2 inch) bolts to help put mine on.

I found later I had to remove the bolt to run my 61 170 motor.
The stock 4 blade fan damn near scraps the front of the pulley.
Not even enough room for the bolt head to clear the fan blades.