Whats the Crank bolt size?

[Gearhead_Girl]

Hey, my crank bolt was stripped. Its been like that since I bought the engine. What size is it? And what kind of bolt? Allen, hex? I havent had the bolt for a while. Thanks..

[BLOWNDFIZ]

I assume you mean the Harmonic Balancer bolt and if so there is a specific bolt just for that application. ARP, Moroso, Mr. Gasket, and Spectre all have small block chevy balancer bolts. Here is a pic.
http://static.summitracing.com/global/images/prod/small/arp-134-2501_s.jpg (http://store.summitracing.com/partdetail.asp?part=ARP%2D134%2D2501&autoview=sku)

You can probably find one locally at an Auto Parts Store.

[Fastbird]

The threads are 7/16 x 20, I remember that much. I've got an ARP sitting in the garage, it's what I'd recommend because they're NOT a TTY bolt and thus reusable.

[Gearhead_Girl]

Expensive lil bugger.. Alright guys thank you.

[ChevyChad]

does anyone know how long the stock crank bolt is? :confused: