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stock pushrods 

 

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 Post subject: stock pushrods
Posted: Wed Jul 12, 2006 8:34 pm 
Tyre Shredder
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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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Posted: Wed Jul 12, 2006 9:52 pm 
Getting Side Ways
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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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Posted: Thu Jul 13, 2006 7:50 am 
Tyre Shredder
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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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Posted: Thu Jul 13, 2006 3:47 pm 
Getting Side Ways
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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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Posted: Thu Jul 13, 2006 5:45 pm 
Smokin em up
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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.

 

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Posted: Fri Jul 14, 2006 12:58 am 
Getting Side Ways
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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...

 

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Posted: Fri Jul 14, 2006 11:47 am 
Tyre Shredder
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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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Posted: Sat Jul 15, 2006 12:12 am 
Getting Side Ways
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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....

 

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As in ZOOM 126 edition
331 Dart block,3.25/ 4340 steel crank, Oliver rods,TFS ported track heat heads, TFS track heat inlet Twin SC61 turbo's
Project 1UZ-EF has started.. S475 Turbo 4.0 V8 Mustang Celica.....

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