Quote:
Originally posted by jeff chambers
Gear drives suck up precious horsepower....their main drawback. On a SBF you can expect around 10hp loss with the gear drive; we've seen as much as 25hp loss between a gear drive and chain drive on a high RPM SBF. If you want real timing stability, go with a crank trigger. If you want to kill the harmonics on the valvetrain, look at the FRPP/Comp Cams belt drive. I wouldn't put a gear drive on my motor if you gave it to me for free.
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A crank trigger doesn't much for your valve timing.
Take care,
~Chris