Thread: Roller camshaft

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Hi all of you,
I've got another probably pointless question. But it's the first time I'm installing a roller cam and I want to do it right, those things are expensive.
I have a mechanical fuel pump (stock GM) and the cam (a Comp Cams XR258-HR) has a fuel pump lobe on it. Can I use the stock pump push rod or must I use a rollerized or ceramic-tipped one? I've heard that a special push rod should be used, but is it mandatory?
Thanks a lot,
Max

PS: I bought the cam second hand and the previous owner doesn't have any manuals or anything with it. All I have is the spec-sheet and installation guide Comp Cams provide online. There they say you should use a special pushrod, but I couldn't find a firm here in Germany that even knew of the existence of rollerized fuel pump pushrods...

i would use and have used the bronzed tip one if your cam is a steel core ? if so you do not want to go with a steel push rod . if the core of your cam is iron the you can go with the steel one .

OK, so I've found out this much: Steel camshaft means I have to use a bronze or roller tipped pushrod, iron means I can use the stock one. Now I checked out other forums, and some say the Cams ending in "-8" are iron. Others say the end number doesn't mean a thing. On the Comp Cams website it says it's made from "special material". Now wth is special material? I can't find an email-adress to contact Comp either...
Does anyone know for sure what this cam is made of?
Thanks a lot,
Max

they do not make a roller tip . just run the bronze tip push rod

Originally Posted by pat mccarthy

they do not make a roller tip . just run the bronze tip push rod

They make a roller tip but its like 80 bucks fer 1 fuel pump rod !!!

Accourding to Comp Cams all of the cams with a -9 is billet stock and the -8 is a alloy(special material) and better heat treating for the higher spring pressuers and you can use the stock push rod and distributor drive gear. A search of that # you have came back with Comp Cams Chevy 262-400 Xtreme Energy XR258HR Cam pt# 8-408-8. I'm running the 8-422-8 and I'm using the the stock fuel pump rod and no problems. Is the block you have a factory hydrolic roller motor?

Originally Posted by shawnlee28

They make a roller tip but its like 80 bucks fer 1 fuel pump rod !!!

who would that be? have never used one or seen one any were? the bronze tip one is the best way to go this is what i would use. ok i found it is made for small blocks only and it is $65. but why ? when the bronze tip work fine. what if it broke off the roller ?the less parts the better

hmmmm i think the roller tip is a wast of good money? this must be something new my comp book dose not have the roller tip in it . if some one is worried so much run a electric fuel pump? why not work great till they stop

yes the less parts the better .way to much money i think. that money could go some were else and see more for it. like pizza .beer . and big girls

Yeah, I guess I'll go for the Pizza and beer
Won't be much left for big girls, though
Ah, well, I seem to have found the point where I say: Comp wants me to buy an expensive part, although I don't need it. So I'm not going to buy it.
Thanks a lot for your help, if my fuel pump lobe on the cam goes in 80 k miles, THEN I'll upgraqde to an electric pump