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Headers and cam options 


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 Post subject: Re: Headers and cam options
Posted: Fri Apr 27, 2012 7:08 am 
Tyre Shredder

Age: 29

Posts: 372

Joined: 3rd Aug 2005

Gallery: 3 images

Ride: ef XR8 / xe fairmont ghia 393.

Location: clare valley
SA, Australia

XR9UTE wrote:
That's right so, if the harmonic balancer pulley of the underdrive set is underdriving the entire accessory drive it will also underdrive the blower if running off the same belt.

I might try changing the harmonic balencer pully back to standard ab sre it all spins up ok.



Ef xr8. Charged 9psi, tw 170 heads,track heat intakes,1.72 rockers, f303 cam, custom plazma man/ rapid cooler, 60lb injectors, tko600, sct eliminator, aeromotive fuel system.

393 xe ghia stage 5 als raceglides c4,9" full spool 31spline moser axles. Will be looking at running high 9s low 10's

 Post subject: Re: Headers and cam options
Posted: Fri Apr 27, 2012 11:47 am 
EFI Guru

Age: 51

Posts: 4186

Joined: 5th Nov 2004

Gallery: 24 images

Ride: 351 Vogue,XH 5.0,'17 5.0 Stang

Location: Perth
WA, Australia

I think you'll have to change the waterpump pulley back too because I think it'll hit the crank pulley.
One of the advantages of a separate drive for the blower I suppose.
I'm going to have to remove the underdrives off my Pursuit for the same reason although I think I'll be able to retain the big waterpump pulley on that engine.
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