Assymetric Drive Pulley Sizing

[UnorthodoxCreat]

I was planning on using a TAV2 on my Gilson Restomod but it doesn't look like there is enough room with the jackshaft. My new plan is to buy a Comet 30 Series driver and driven pulleys and mount the driven pulley on the jackshaft. I see the driven pulley comes in 6" and 7" versions. Can anyone explain/confirm the difference between the 2 pulleys? I assume if I use the 7" driven it will give me better low end with the same top speed as a 6" driven. Is that correct?

 

[rmm727]

no, you lose some top end with the 7" driven. that is the tradeoff between the two. you gain low end in exchange for giving up the supposed overdrive a 6" driven gets

 

[UnorthodoxCreat]

Thanks, I was afraid of that. I'll stick with the 6".