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| fairy v8 |
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hey guys what are the stock pushrods like in the au 5.0l , just wondering im gonna fit an aftermarket cam the manufacturer reckons stock would be ok ,anybody had any bad experiences doin this
cheers murray |
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| xr8ute |
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it is critical that you have the correct length pushrod, to get the correct lifter preload.
you wont really know what length pushrod you will need until you install the cam, and measure with an adjustable pushrod. |
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| fairy v8 |
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thanks, i understand about the pre-load etc i was meaning are the stock ones up to the task with the extra stress from double springs ,extra lift etc do you need to replace with high tensile ones
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| xr8ute |
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Yeah, thats a good question....and im not real sure.
I ran the stock pushrods for a while with my Crane 2030, shifting at 5400-5500rpm, and they seemed OK. I've got adj rockers to make up the length. I am thinking of running some thicker/stronger pushrods when it goes back together though. |
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| richie |
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Dont skimp - get hardened chrome moly if you are running higher spring pressures - and do measure pushrod length if cam changed.
Richie.
_________________ 1993 ED F/mont 5.0L, Auto, Edelbrock RPM's, CompCam XE276HR, Crane Gold Race 1.7's, Edelbrock Performer, 75mm T/B, MAP, 42lb , GenIII coils, PH4000's , Twin 2.5", Thermos & underspeeds, 3.7 LSD, 2800 stall and MoTec M800, 372fwhp @ 5400rpm & 387 ft-lb @ 4400 rpm. |
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| EBXR8380 |
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You only require hardened pushrods when using stud mount rockers / heads.. As the guide plates wear on pushrods and send fillings through engine..The std pushrods will take 340 Lb besides too much higher than that the std roller lifters become suspect....
It's more the lenghth and geometry thats required..Adjustable roller rockers would be better...
_________________ As in ZOOM 126 edition |
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| fairy v8 |
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oh ok thanks guys im not gonna use guide plates i spose long as theyre all straight and the right length shud be ok
cheers |
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| EBXR8380 |
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fairy v8 wrote: oh ok thanks guys im not gonna use guide plates i spose long as theyre all straight and the right length shud be ok
cheers Stock pushrods won't work with guide plates....
_________________ As in ZOOM 126 edition |
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