1.6 rocker arms to use with stock shaft?

[lars]

Hi!

I'm planing to put a pair of Edelbrock RPM heads on my mild 440. My plan was to use the stock non-adjustable steel stamped rocker arms and shaft and all from my 915 heads to use with my new RPM heads. Since i got a pretty mild hydraulic cam XE268H, 224/230 @.50 and .477/.480 lift. I was thinking of changing to 1.6 rockers.
So is there any 1.6 rocker arms that I can use with my stock rocker arm shaft and other stock parts from my 915 heads?

Thanks
Lars

[firefighter3931]

The crane ductile iron 1.6 rockers work fine with stock shafts & hold downs. 


Ron

[frederick]

Yes, they will fit, but be sure to check the shafts aren't oval.
This is caused by over tightening the shaft and can cause binding and galling of your new rockers.

Frederick

[lars]

Thanks all for inputs an recommendations.
I have been looking at the Crane Ductile Iron 1.6 rocker (64771-16) to use with my stock shaft and hold downs from my 915. No worries and the give the impression of to last forever.
But at the same time PRW 1.6 roller kits tempts me.... all new stuff, more power etc and all benefits of roller rocker. The price for Crane ductile iron and the PRW alu kit is almost the same.........
What to do? ;-) 
By the way I guess I will bee having new numbers at Duration @ .050" with the 1.6 ratio?

Thanks!
Lars

[firefighter3931]

For what you're doing the crane ductile rockers are fine. The only roller rockers i would consider are Harland Sharp or T&D and that is if using a roller cam with big spring pressures. You won't see any power increase with that setup (solid flat tappet) using a roller rocker vs the ductile units. The Crane stuff is bulletproof. 


Ron

[lars]

I finally made a decision to buy the Hughes 1.6 rocker arm kit with shafts (HUG 1520S-16). Hope they are good?.... since I got brand new assembled Edelbrock RPM heads why not for once buy something that's brand new  and I have never had roller rockes before, why not try it.
Any recomendations for pushrods, size, material etc?

Thanks!
Lars

[elacruze]

I'm with Ron, for the easy springs and low lift you have I'd have gone with the iron rockers, just because there's one less thing to come apart.

I have the Hughes 1.6 rockers myself, but I have a Solid flat tappet cam at .572" lift and 155/370 pound springs.

I'll let you know at the end of next summer if the Hughes rockers made the cut.