Is it true you must change the distributor cam gear to a hardened type when using a roller cam? Is it also best to change the fuel pump rod as well? I've been running a roller for about 5000 miles and just heard about this. I hope nothing is messed up.

Thanks,

Jim

Originally posted by chevyjim:
Is it true you must change the distributor cam gear to a hardened type when using a roller cam? Is it also best to change the fuel pump rod as well? I've been running a roller for about 5000 miles and just heard about this. I hope nothing is messed up.

Thanks,

Jim =
Jim,
What kind of roller?
If it's a hyd roller or some of the "street rollers" a lot are on a cast core & use a stock type gear.
If it is a real billet solid roller you need a brass gear or the new Comp composite gear & a brass tipped fuel pump rod.
I haven't used the new composite gear yet but have heard nothing but good regarding it.
Unless it has the cast gear option which I feel is the way to go these days on any billet street roller.

It's a Comp cams hydraulic roller. I don't have the part # handy, but it was the second to smallest roller they make. Definitely a street cam. I will probably change to the composite and brass pieces to be safe. I just didn't know if it was BS. You hear so much crap on the street these days. Thanks for the quick response Mike!

Jim

Their hyd rollers are supposed to be compatible with the stock pump rod & I would use the GM Melonite cam gear.
Pull your distributor I see what the gear looks like. If it has no unusual wear you are probably fine after 5000 miles.
You do not want to run the brass gear unless it is necessary.
It is considered a "sacrificial piece" :D

I'll check my gear this weekend and check with my Chevy dealer on the Melonite gear if necessary. I feel better now.

Jim

Originally posted by Wolfplace:

You do not want to run the brass gear unless it is necessary.
It is considered a "sacrificial piece" :D I did that in my flat hydrolic graemlins/clonk.gif graemlins/clonk.gif graemlins/clonk.gif

call the cam company. they will tell you what you need dont gess. it will save you money !! graemlins/hurray.gif i had isky make my solid roller with the opinal cam gear for $70 so i can run a steel dist gear .