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The oil pump drive gear question
https://slantsix.org/forum/viewtopic.php?t=54169		 Page 1 of 1
Author:  ceej [ Fri Dec 27, 2013 9:32 pm ]
Post subject:  The oil pump drive gear question
OK, so I've been talking to various racers about the diameter of the OP drive gear shaft. We're trying to find a happy spot for an interference gear.

I measured the Melling pump I picked up from a group buy a few years ago.

It measured .4850" with my dial calipers. I decided that I needed to be a bit more accurate to make sure. I broke out my micrometers, calibrated them to the appropiate standard, and got .4850" which makes me feel really good about my dial calipers! :lol:

The .500 gear from a distributor will not work.

What is the small diameter gear for the SBC? how many teeth, and what diameter is the gear hobbed on? There is a smaller diameter shaft size for that gear. I'm wondering if we can use that bronze gear for oil pumps on billet cams...

CJ
Author:  slantzilla [ Sat Dec 28, 2013 2:31 am ]
Post subject: 
Somewhere in my treasures I have a bronze gear for a Slant oil pump. I think the Cox Bros. had them made.
Author:  sandy in BC [ Sat Dec 28, 2013 6:43 am ]
Post subject: 
When it gets light I will see if I have a SBC oil pump near the top of the pile.

If not this morning ....I will check after my ski lesson with my 3 yearold grand daughter,,,,
Author:  sandy in BC [ Sat Dec 28, 2013 8:18 am ]
Post subject: 
LMAO/////of course its the dist drive gear on a SBC,,,,

The small shaft size is .491.
Author:  sandy in BC [ Sat Dec 28, 2013 8:26 am ]
Post subject: 
The outside dia of the gear is ~1 3/16.....it has 13 teeth

Measured and counted on a 7 pin EFI dist (as far as I know they are all the same)
Author:  sandy in BC [ Sat Dec 28, 2013 8:30 am ]
Post subject: 
Crower makes a .427 shaft size gear

http://www.summitracing.com/int/parts/c ... /chevrolet
Author:  DadTruck [ Sat Dec 28, 2013 2:47 pm ]
Post subject: 
I have no idea if this gear is even close

but mopar part number p3690874 has a bronze gear

http://www.jegs.com/i/Mopar+Performance ... 4/10002/-1
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