Pulley ID thread

Certian pullies can also be used to gain HP....on my 340, I have the 70-up single groove set-up. I recently bought a Fluidamper balancer for it and it is alot thicker than my other balancer, therefore if I use the 70-up crank pulley it won't line up. So I located a 64-69 SB single groove crank pulley, it is thinner allowing it to line up....the diameter is also smaller then the newer one donuts also acts a little like an "underdrive" pulley, freeing up a few ponies :glasses7: I did have to enlarge one bolt hole for it to fit but that's easy.

Nice work Rani, I am sure your research will help many on this site :thumleft: