*84TA

I recently installed the Comp xr288hr-10 part # 08-433-8 cam in my motor.

http://www.summitracing.com/parts/CCA-08-433-8/


From what I understand this Cam in ground from a austempered steel core. My question is can I run a stock distributor gear and fuel pump rod or do I need a melonized gear and bronze tip fuel pump rod.

I e-mailed comp this question and also called their 800#. The tech on the phone told me that it was fine to run stock parts since it was austempered. A few days later I got back this e-mail.

This cam requires a steel/iron mealonized distributor gear. It must me a
mealonized gear. For a fuel pump pushrod you will either need a roller or
bronze tip style.

Aaron Mick
Technical Sales & Support

COMP Performance GroupT
3406 Democrat Rd.
Memphis, TN 38118

So what do you guys think? What are your experiences with this line of cams? I know that the factory cams and billet cams require the melalonized gear, but I think they are ground from a billet core.

I also found this on comps web site

Street Roller Cam Cores (Hydraulic or Solid Roller)
(special material - works with most standard distributor gears)

01-000-8 CHEVROLET 454-502 Generation VI Big Block
07-000-8 CHEVROLET LT1 Engine
08-000-8 CHEVROLET 262-400 V8 with Roller Cam (1987-98)
09-000-8 CHEVROLET 4.3L V6 with Roller Cam (1987-98)
11-000-8 CHEVROLET 396-454 V8 (1967-96)
12-000-8 CHEVROLET 262-400 V8 (1957-98)
18-000-8 CHEVROLET 4.3L V6 (1985-99)
56-000-8 CHEVROLET 4.3L V6 (1992-99) with Balance Shaft

97-000-10 CHRYSLER V10 VIPER
98-000-10 CHRYSLER V10 Truck

107-000-8 DODGE Neon SOHC 2.0L (1995-01)

31-000-8 FORD 289-302 V8 (1962-99)
32-000-8 FORD 351C, 351M-400M V8 (1970-82)
35-000-8 FORD 302 HO (1985-95), 351W V8 (1969-99)

Here is the link to that page-
http://www.compcams.com/Pages/402/ca...x#streetroller

Any input would be greatly appreciated

skinny z

For what it's worth, your cam and the one I am currently using (XR276HR) are from the same page in the Comp catalouge with the same footnotes.
I was told that the OEM ditributor gear can be used and I have been doing just that for tens of thousands of miles. I also use the OEM fuel pump push rod. There IS a note regarding the need for a bronze tipped push rod should a high performance, six valve style mechanical fuel pump be used.

I came across an old thread of my own more or less asking the same question. Read post #7.
https://www.thirdgen.org/forums/tech...-12-423-a.html

*84TA

Just a thought, when they refer to the stock gear, are they assuming it was a distributor from a roller block. I have an old hei that was used with a flat tappet setup, as was the fuel pump pushrod.

I just got the motor running and it runs fine, I just don't want any problems down the road.

skinny z

I've never come across anything that distinguishes a distributor from a non-roller vs. a roller block. My understanding is that they are one and the same.

hardyz13

iTrader: (1)

I just put the xr288 in my 400 and Im using the gear that is stock on msd 8360 and for the fuel pump rod I used comp 4607 with bronze tip. What size motor are you running?

*84TA

It is a 350, zz4 block .020 over.