I have a 454 Hi Perf block with a 4.25 crank. My distributor gear on my accel distributor wore down over time, and then crushed on the cam gear under hard acceleration at 500 miles. I am running a high volume oil pump at about 70-80 psi cold. The engine was dynoed at 570 HP at the flywheel. Any ideas on why this happened to a non adjustable installation. I know that with a billet cam you should use a bronze gear, but this Crower cam was not a billet unit. What now, tear down, clean out, machine as neccesary and re-build? Any idea why this happened.

[Matt Smith]

I would tear the egine down as there is now metal EVERYWHERE. MAKE SURE it's clean then reassmble

[1BadRat]

Ditto's to Matt. You'd better clean'er out!

Seems like we are hearing more and more problems with distributor gears. I'm thinking that the HV oil pump is the culprit. That's putting a lot of stress on the gear. I'm starting to get the notion that if you ever have a bronze gear, you might want to use a stock oil pump. Most will agree the stock pump is up to the task, even on a built engine. Sorry for your troubles, Steve.

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-Mark "Some of us got it and some of us ain't." -Deputy Sheriff Barney Fife
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1967 Chevelle SS396/375
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