is it possible to run a mechanical fuel pump when installing a gear drive or do u have to add a electric pump
I really just was wondering if u can run one with a gear drive ?I heard u couldn't I don't run gear drives sometimes I have questions and would like a answer so I could educate myself a little
I don't see why you can't run one with a gear drive. Mechanical pump runs from the cam... Don't use a gear drive, just had one cost me a brand new stroker. I'll never run one again
I think you got a little more education than you bargained for here! As far as running one with a mechanical fuel pump goes, I guess it would depend on the manufacturer and whether the fuel pump eccentric cam would fit along with the gear on the cam and the idler gear/gears. That's probably a question the manufacturer of the gear drive should answer.
Of the 3 versions I've used through the years.. they work fine with the stock pump cam eccentric. These guys have warned you well enough by now though but I'll add this too. The fixed idler designs are best($$$). The much cheaper Pete Jackson floating idler versions.. and all the copy cats.. will retard timing under load and advance it when abruptly coming off throttle. Not too terrible a deal if you are under cammed, don't care about giving up a few lbs in the midrange and just want that last 200 rpm rev range up top. BUT.. the floating design causes violent fluctuations back and forth when on and off the throttle, during shift rpm drops/recoveries, to cause undue stress and eventually break the idlers strapping. I had heard some stories through the years but it really hit home when I saw it hapen on my own junk and still have one with a broken front strap sitting in a box to illustrate the design flaw. Another bit of heavy footed driving would have surely broken the other strap and likely toasted the motor.. cam, valvetrain, block and all. That was the last one I've ever used and will only use premium double rollers or belt drives nowadays. I'll end my opinion with this. From a valvetrain standpoint.. a sloppy gear drive is no better than a sloppy chain.. but is a much weaker design when it comes to longevity.
