Pushrod Selection again

[FSTAfrom WAYback]

Trying to get a second opinion on pushrods. Been dealing with Manton. They say I MUST have 7/16" X .168 wall, nothing less. These are $400 a set, don't want to be a cheap ass, but if I do'nt need something that severe I would like to know.

Motor is as follows: 565 BBC 14.8 comp., two foggers around 550-600 total. Spring pressure is 400 seat and just over 1000 open.

They say the extreme cylinder pressure calls for that particular pushrod.

Have been running 3/8" .080 wall in the past, and was told I should not even crank the motor with that pushrod.

Any suggestions?

[OnABudget]

I had 3/8 .080 with 400 and 1000,only tweaked 1 after 80 or so passes.Now I have Smiths Bros. 3/8 .120 9.100 and 9.900 long no problem 10.2 deck dart360 head 15.1:1, 2 systems about 780hp worth of squeeze. Smiths Bros should be right around $200.

[ProGSX]

They are correct. People can get away with smaller thinner pushrods but they are throwing away HP.

[Jim Monson]

I would use the pushrod they recommended.....or bigger ones.

[joesmithz28]

Use Manton's advice. Just because your motors run with less pushrod, doesn't mean they are deflecting.

[FSTAfrom WAYback]

Thanks for all the advice guys, Mantons it will be, everything they said made sense, just wanted a couple of other opinions.


On another note, you guys think my stock stamped steel rockers will be fine, or should I move up to a nice roller tip rocker?:rolleyes:

[MCM]

On another note, you guys think my stock stamped steel rockers will be fine, or should I move up to a nice roller tip rocker?:rolleyes:Just die grind the rocker's stud slot out to accompany the additional lift, and you'll be good to go.;)

[ProGSX]

Thanks for all the advice guys, Mantons it will be, everything they said made sense, just wanted a couple of other opinions.


On another note, you guys think my stock stamped steel rockers will be fine, or should I move up to a nice roller tip rocker?:rolleyes:

If your going to run the stock stamped steel rockers, you better go to tapered 9/16" pushrods....

[FLYIN4D]

n/m

[Ed-vancedEngines]

With those spring pressures you better forget the stock stamped steel rocker arm. The best high performance wide slot stamped steel rocker is also just good to .640 lift.

I suggest to get one of the shaft rocker systems from T&D, Jesel, Crane, CRower, Comp Cams (T&D) etc. At the very least use a good big strong needle bearing rocker like Crane Gold, Comp Cams (Harland Sharp) Harland Sharp, Isky, Scorpion, Crower, Lunatti (Crane) etc. with a good stud girdle to fit. I am now doing a BB Ford on a budget using Harland Sharp with stud girdle with what will likely be 380 to 400 seat pressure and 1,000 open.

Ed

[FSTAfrom WAYback]

Sorry if i was misleading Ed. The rocker arm thing was a joke. It already has jesels on it.

[MCM]

Sorry if i was misleading Ed. The rocker arm thing was a joke. It already has jesels on it.It's a good thing Ed's a religious man, or he'd probably be rather upset...:p FWIW, It doesn't look like you're the only one that fell for it Ed - It seems that FLYIN4D fell for it too.;)