[jhein]

At some point in the near future I'll be installing my Progression Ignition distributor. I have a HR cam and the PI dist has a melonized gear. What type of lube should I use on the gear, oil, assembly lube? If so any particular brand or type?

Thanks.

[wbnapier]

I changed out the gear for the BOP poly one and used Red Line assembly lube.

[Dragncar]

Its not going to matter much, as long as it mixes with oil. I have used molly assembly lube, white grease and straight Lucas and even old STP.
I have a .030 hole drilled in my distributor plug and the BOP gear that has been in service for a dozen years looks new.

[grivera]

OP - does your cam have a pressed on cast iron gear or is it billet steel?

[jhein]

Originally Posted by grivera

OP - does your cam have a pressed on cast iron gear or is it billet steel?

Billet, I believe. It's the Butler custom grind of a Comp XR288HR cam.

Also, I have a BOP poly gear that I think I'll put on. Everyone seems to like those and that's what's in it now. I guess I could even use the one that's in it now since it's already broken in on the cam. No need to use assembly lube then.

[tom s]

For new billet cams I run a stock dizzy gear during the breakin and then swap to the BOP gear.Tip I picked up from Joe Sherman.FWIW,Tom

[Steve C.]

Look at the part number on the cam card, typically it consists of three sets of numbers. The last number, or numbers, are for the type of core used. Typically solid roller cams and hydraulic roller cams for a Pontiac application use a billet core. On a Pontiac application they are usually designated with either a -9 or a -11 for a billet core.


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[grivera]

Originally Posted by tom s

For new billet cams I run a stock dizzy gear during the breakin and then swap to the BOP gear.Tip I picked up from Joe Sherman.FWIW,Tom

Any idea if a bronze gear will accomplish the same thing? I assume a stock gear being harder will break-in the cam gear faster. Also, is this done even without a blocked oil filter adapter bypass?

[tom s]

I have never altered a factory oil filter adapter.Tom

[jhein]

Originally Posted by Steve C.

Look at the part number on the cam card, typically it consists of three sets of numbers. The last number, or numbers, are for the type of core used. Typically solid roller cams and hydraulic roller cams for a Pontiac application use a billet core. On a Pontiac application they are usually designated with either a -9 or a -11 for a billet core.
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The cam I have is the Butler BP8030SP which is a comp cams CCA-51-433-11 ground on a 112 instead of 110 LSA. Because it's a custom grind there is no material code on the cam card. The part number is just BP8030SP, but I'm fairly certain it's the same core material. I could call Butler and ask if it really matters.

Anyway, I talked to my builder and he says he prefers the BOP composite gear vs melonized, and he agrees that using the gear on my current distributor (already run in with the cam) is the best plan.

[Steve C.]

"Because it's a custom grind there is no material code on the cam card. "

Regarding this series of numbers posted: 51-433-11

The number 11 within that series of numbers is the code for the core type.

Number 11 is the designation for a steel billet roller.

The listing of core types is on page 2 here:

https://images.carid.com/comp-cams/i...ct-catalog.pdf


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