Posted By: coronet1966d
440 Q: can i get away with the HD stamped rockers? - 12/10/09 09:57 PM
im running a .020 over 440 with 10:1CR edelbrock RPM heads and intake with the comp XE275HL cam, do you guys thing i can get away with the mopar HD stamped rockers and shafts? id much rather spend $87 than $487 if i can get away with it
also what are the correct lenght pushrods? for my hydraulic cam application?
thanks in advance
Posted By: DaytonaTurbo
Re: 440 Q: can i get away with the HD stamped rockers? - 12/10/09 10:05 PM
You'll be fine. I'm running stock mid 70's pushrods and rockers on a lunati voodoo 60303 which is not far in spec from the 275hl. Some guys have said the HD rockers are the same as the mid 70's rockers. Also other guys are running stock rockers with considerably more lift and/or duration than the 275hl.
Posted By: coronet1966d
Re: 440 Q: can i get away with the HD stamped rockers? - 12/10/09 10:13 PM
ok good. i still have the rockers and shafts off my 452 heads i may just clean those real well and reuse them. ive never really liked adjustable rockers anyway
where can i get standard pushrods? or what lenght and ball configuration am i looking for?
Posted By: DaytonaTurbo
Re: 440 Q: can i get away with the HD stamped rockers? - 12/10/09 10:54 PM
Regular pushrods just have the rounded ball end on both sides. I'm sure you can get some used stockers for cheap or buy some new one for cheap from 440source.
Posted By: ccdave
Re: 440 Q: can i get away with the HD stamped rockers? - 12/11/09 01:02 AM
You should be more concerned with the spring pressure. Those stamped steel rockers can't handle much more spring pressure than stock springs. I learned the hard way on a 440 GTX I owned when I was your age. The result was 2 bent pushrods,a rocker arm with the pushrod cup missing and a blown head gasket.
If you think your build was expensive just wait till you see the cost to fix it when it breaks due to short cuts and inferior parts
Posted By: Exit1965
Re: 440 Q: can i get away with the HD stamped rockers? - 12/11/09 01:36 AM
I am using the HD stamped rockers (purchased around 2006) on Edelbrock heads/springs, with a .501 lift, 245 duration cam (Isky) and haven't had any problems, though I haven't put lots of miles on it.
When I was deciding which rockers to use, I remember seeing an online article by a mopar magazine, they had used I think one of the Comp Cams hi lift cams and used stamped rockers. There was a comment that they are plenty strong, or something along those lines. Anyways, no problems here.
Posted By: R/T1968R/T
Re: 440 Q: can i get away with the HD stamped rockers? - 12/11/09 02:05 AM
I ran the same cam with HD rockers and it kept spitting push rods. The ramps are very aggressive on that cam. I even tried SmithBros for a perfect fit and had the same problem. Changed to adjustable rockers and solved the problem. Lucky no damage.I ran cams with more lift...old style, and had no problems.
Posted By: 383man
Re: 440 Q: can i get away with the HD stamped rockers? - 12/11/09 07:46 AM
I ran used stock rockers on a 383 with the MP .484 cam for just over 7 years with zero problems. Plenty of street miles and I raced the car a few times a year. Ron
Posted By: Commando1
Re: 440 Q: can i get away with the HD stamped rockers? - 12/11/09 01:59 PM
Using factory 1976 rockers with zero problems on a built 440.
Posted By: therocks
Re: 440 Q: can i get away with the HD stamped rockers? - 12/11/09 04:04 PM
Summit has the push rods for like 30 bucks.My kid has them in his 62 413.Just put new TRW rocker on last year when we put my 516s with the heavier Comp springs on.He had been running the stock 62 rockers with the Hughes cam with my old Isky springs for 8 years with no problems.The stock Eddy springs arent very stout anyway.Rocky
Posted By: Rapid340
Re: 440 Q: can i get away with the HD stamped rockers? - 12/11/09 04:46 PM
There is more chance of severe damage to pushrods and rockers with too little spring pressure than a little over what you need.
Posted By: joewhite440
Re: 440 Q: can i get away with the HD stamped rockers? - 12/11/09 09:47 PM
Make sure you get the springs for the cam you are running or have the Pressure checked. I always tried to find a set off a lower mile 400 or 440 because the Rockers do get thin with a lot of miles and will push through. Make sure the Shafts are not scarred from the Rockers also. New ones are cheap compared to damage if something binds up or lets loose.
