70 dart 470 ci drag car build.

Yeah, the GD thing just pisses me off me off.

Guys run chains because they think the GD will make noise and generate harmonics but there is zero proof of it.

In fact, in a thread on yellow bullet Chris Uratchco, who is no poser BTW talked about how inaccurate a BELT DRIVE really is.

The only reason PS doesn’t use them is it takes longer to degree a GD than a belt and it’s harder to change cam timing on the dyno using a GD than a belt.
Harmonics could come from 4 gear gds