Rocker Shafts

[Mike67]

So a while back i picked up aset of eddy RPM heads fully assembled and it has comp pro mag rockers (1.5) and what appears to be factory style ( hollow) rocker shafts.
So im just curious if anyone uses these on thier motors or has most upgraded to the billet shafts?
Comp Xe275Hl 231/237, .525/.525, 110, 10.5cr.
Also how many are still running a single bolt cam vs 3 bolt? Should I change?
Thanks!

 

[lewtot184]

all shafts are "hollow". it's the only way the rockers can get oil. comp pro mags come with induction hardened shafts, or used to, so i think your fine if it's a complete kit.

i wouldn't worry about a single bolt with that cam.

 

[RT K_line]

I'm using the stock shafts with ductile iron adjustable rockers on my RPMs. I first ran the 557 purple shaft and switched to a Solid roller with 586 lift. No issues in 12,000 miles so far Knock on wood lol.

 

[Mike67]

Thanks fellas, yea I knew all shafts were hollow, I guess my question was more towards the wall thickness/ hardness. and should I upgrade to billet shafts, as I do not truly know of the origins of the Eddy shafts ( i bought it as an assembled unit).
The ones that are on my 906's and the Eddys are different but both look to be made from thinner steel ( Eddys seem a tad heavier) vs a billet shaft. Both of sets have pressed end caps like a stocker. Im not sure how to identify the ones with the comps...they also have stock clamps!!!

 

[texas69bee]

More than likely it's a Comp shaft as well. I have the Comp Pro Mags as well and they were sold as a kit.

 

[lewtot184]

the comp shafts are heavier wall and induction hardened.

 

[Mike67]

This is why this place is so great, theres always someone ready to share their knowledge!
Thanks lewot, txbee, rt, & cranky!

 

[mentor70]

ive had 2 sets of the Pro magnums, the first was an early set, an the second set i have has a different design in the rockers, the newer ones have bushings in them.
i had my rocker shafts treated with WPC for added reliablilty.