Correct Dist. Gear ?
Racer
Joined: Aug 2002
Posts: 386
Likes: 0
From: Lancaster Lancashire
Re: Correct Dist. Gear ? (CAJUN C4)
Depends on the cam, but I wouldn't think the cast iron gear on the 84 is compatible with any roller cam. (Could be wrong)
For a GM roller cam, you want a melonised gear GM Part No. 10456413.
TPiS also recommend this gear for their ZZ9 cam.
I know some use a bronze gear on roller cams, but these are sacrificial and wear out quite quickly on the street.
I have recently heard Comp cams have just released a composite gear ??
unfortunately I know nothing about it, maybe someone else might have ?...
Best to use the gear recommended by the cam manufacturer.
:steering:
For a GM roller cam, you want a melonised gear GM Part No. 10456413.
TPiS also recommend this gear for their ZZ9 cam.
I know some use a bronze gear on roller cams, but these are sacrificial and wear out quite quickly on the street.
I have recently heard Comp cams have just released a composite gear ??
unfortunately I know nothing about it, maybe someone else might have ?...
Best to use the gear recommended by the cam manufacturer.
:steering:
Pro
Joined: Oct 2001
Posts: 682
Likes: 23
From: loxahatchee fla
Re: Correct Dist. Gear ? (Davemc1963-87conv)
if you have a CAST IRON CAM GEAR whether its machined on a CAST IRON CAM or PRESSED onto a STEEL billet core a CAST IRON stock style DISTRIBUTOR GEAR IS WHAT YOU NEED, BUT..if you have a STEEL BILLET CAM CORE (NORMALL ONLY FOUND ON SOME ROLLER CAMS) with A STEEL GEAR MACHINED ON THE CORE a BRONZE/ALUMINUM STYLE GEAR IS WHATS NECESSARY HERE READ
http://www.cranecams.com/master/drivgear.htm
The bottom of a Chevrolet distributor housing can be modified to spray pressurized oil onto the distributor drive gear. The extra lubrication will reduce distributor gear and camshaft gear wear. This is especially important when the gear is used to drive non-standard accessories, such as a high volume oil pump, or a magneto that puts additional loads on it and the cam. When the distributor is installed, the bands at the bottom of the housing are designed to complete the internal right side lifter galley on all small and big block Chevrolet V-8 and 90° V-6 engines. If you hand file a small vertical groove .030" wide x .030"( thats the diam. that crane recommends Ive always used the larger .030 x.050 groove with no problems deep on the bottom band (above the gear), pressurized oil running between the two bands will be directed downward onto both the gear and the cam. [b]This procedure is recommended for all Chevrolet engines no matter what material gear (cast or bronze) or what type of camshaft (cast or steel) you are
keep in mind the groove MUST be lined up with the cam gear when the distrib. is installed
[Modified by grumpyvette, 12:27 AM 4/29/2003]
http://www.cranecams.com/master/drivgear.htm
The bottom of a Chevrolet distributor housing can be modified to spray pressurized oil onto the distributor drive gear. The extra lubrication will reduce distributor gear and camshaft gear wear. This is especially important when the gear is used to drive non-standard accessories, such as a high volume oil pump, or a magneto that puts additional loads on it and the cam. When the distributor is installed, the bands at the bottom of the housing are designed to complete the internal right side lifter galley on all small and big block Chevrolet V-8 and 90° V-6 engines. If you hand file a small vertical groove .030" wide x .030"( thats the diam. that crane recommends Ive always used the larger .030 x.050 groove with no problems deep on the bottom band (above the gear), pressurized oil running between the two bands will be directed downward onto both the gear and the cam. [b]This procedure is recommended for all Chevrolet engines no matter what material gear (cast or bronze) or what type of camshaft (cast or steel) you are
keep in mind the groove MUST be lined up with the cam gear when the distrib. is installed
[Modified by grumpyvette, 12:27 AM 4/29/2003]
