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May 27, 2007 | 09:49 PM

bnixon

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Joined: May 2007

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Ford Mustang

I recently bought a 73 ford mustang and installed a new 351 cleveland engine and it keeps stripping the gear on the bottom of the distributer. The oil pump is okay. What seems to be the problem. no one seems to no.

May 28, 2007 | 12:02 AM

Ford_Six

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Joined: Oct 2002

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From: The Big, Oregon

If it's a high volume oil pump, that's your problem.
There are also different gears available, I thin Moroso makes a harder one. Just watch out for stripping the gear off the cam.

May 28, 2007 | 01:16 AM

edgl

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Joined: Dec 2003

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From: Lancaster, CA

I have a 72 Mustang with a 351C. I have not had any trouble with the dist. gear. It has been rebuilt, with a Comp cam.

May 28, 2007 | 04:40 AM

NumberDummy

Ford Parts Specialist

Joined: Nov 2006

Posts: 88,826

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From: Simi Valley, CA

Quote:

Originally Posted by bnixon

You could have the wrong gear. There is only ONE listed for 1973 351C 2 or 4V engines, but the gears for the 351W's are different. According to the 1973/79 Ford Passenger Car Parts Catalog, this is the gear you need:

C4TZ-12390-A .. Distributor Gear (Motorcraft DZ-365)

For future reference: The dizzy parts lists for a 1973 Ford Mustang are: 351C 2V = 120.2A / 351C 4V = 120.2D

May 28, 2007 | 02:11 PM

ag30265

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Joined: Jan 2007

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From: Coweta,GA, GO DAWGS!!!!!!

Is the gear steel or bronze?

Different cams and dizzy housings call for the bronze in most performance applications.

Jun 5, 2007 | 02:04 PM

PerfDistIgnition

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Joined: Aug 2006

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Quote:

Originally Posted by bnixon

Topic 2: Excessive Distributor Gear Wear on Ford

Excessive distributor gear wear can be a problem with Ford engines. Most of the time, the problem is a result from the use of a high volume oil pump. High volume oil pumps put a lot of stress on the distributor and cam gears. A high volume oil pump is not necessary on a street driven engine that turns no more than 7000 rpms. Only extreme racing engines require the high volume pump. Should you use this type of oil pump, the following precautions will save your distributor gear from early destruction.

(1) Drill a .030" hole in the lifter/oil galley plug behind the distributor. This will allow additional lubrication on the distributor and cam gears. This will not lower oil pressure enough to hurt the engine.

(2) Ford oil pump mounting brackets have elongated holes. Due to this, the distributor shaft and oil pump shaft should be aligned so that the distributor turns freely before tightening the mounting bracket bolts. Failure to do this will cause a binding situation, thus damaging the gear.

(3) Stock Ford hex oil pump drive shafts are know to vary in length which could cause a bottoming or binding situation.

(4) Brass distributor gears can be used to avoid damaging the cam gear. Brass gears are softer and can wear out quicker than the cast gear, but will not cause damage to the cam gear. If using a brass gear, check it occasionally for wear.

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