Originally Posted By StealthWedge67
X2....
The gear drive noise is a product of friction. Not what you typically look for in engine parts, I’d worry about the harmonics creating issues in the valvetrain, but that’s just me. If you’re just looking to turn heads as you cruise, that’ll do the job.
iagree
When that type(Jackson) of dual idler gear drives first came out they where a cheap alternative to the better racing brands like Milidon, Keith Black and Donovan. A friend of mine bought one for his BB Chey powered 1955 Thunderbird Modified Production car, one of the ends of a Tru Arc snap ring broke off and ended up in the oil pump shearing the shaft off ruining the motor down
He went back to a good timing set after that up work
I have used several different brands of the conventional gear drives and a Jesel belt drive as well as a bunch of the real expensive racing timing sets, pick your poison scope work All of them can fail if you beat on them long enough shock grin shruggy

Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)