Crank pully bolt size?
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Supreme Member
Joined: Apr 2002
Posts: 3,552
Likes: 5
From: New Jersey
Car: 86 Corvette, 89 IROC, 1999 TA
Engine: 350, 350, LS1
Transmission: 700r4, 700r4, T-56
Axle/Gears: 3.07, 373, 4.10
Crank pully bolt size?
What size bolts do I need to bolt up my crank pully, can't seem to find the old ones so I guess I'm buyin new ones.. 
Member
Joined: Jan 2004
Posts: 105
Likes: 0
From: St Louis, MO
Car: 89 Iroc & 88 Firecird & 86 Camaro
Engine: 350 TPI & 305 TBI & 305 Carb
Transmission: 700R4
Hey, I'm not sure on the size. If you don't get anyhelp here then I would contact the parts department at your local dealer they are probably closed today though.
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Joined: Jul 2004
Posts: 10,763
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From: Calgary, AB, Canada
Car: 1982 Trans-Am
Engine: 355 w/ ported 416s
Transmission: T10, hurst shifter
Axle/Gears: 10 bolt, true-trac, 3.73
I'm pretty sure it's 3/8" NF actually. 1/2" length. I'm talking about the 3 bolts that hold the pulley on.
I bought a mr gasket set of the 3 bolts, and a MR gasket center bolt, that's a 7/16", like 2.5" long or something. Also bought the "kit" for that, it included the massive washer.
I bought a mr gasket set of the 3 bolts, and a MR gasket center bolt, that's a 7/16", like 2.5" long or something. Also bought the "kit" for that, it included the massive washer.
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