Topic: Harmonic balancer bolt

[dcacjc]

I have what might seem like dumb question, are there different size harmonic balancer bolts for a sbc?  I ordered a sbc balancer bolt from summit and its to small, but its the only size i can find. 

[obama]

I believe there are at least two sizes, local machine shop, or even parts store should be able to help with the right one.
I'v got an extra one here if'n ya want, but until you know the right size,,,,,,,, well no use having two wrong bolts that don't fit.

[dcacjc]

it seems to be a 1/2" 20, that is what BBC use but the are about an 1' to short. 

[hotwheels]

I would look on the top left rear of the engine and you'll see the block casting numbers, i can usually take a picture of them and then look online to see what year the engine is. With that info, you can then search for all the parts the engine needs..