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Re: 489 pinion shims
[Re: roadrunnerreds]
#1613661
04/29/14 07:51 PM
04/29/14 07:51 PM
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Joined: Mar 2009
Posts: 2,475
Sydney,Australia
tex013
top fuel
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top fuel
Joined: Mar 2009
Posts: 2,475
Sydney,Australia
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this might help
PINION SHIM VS. RATIO CHART GEAR RATIO SHIM THICKNESS 3.23-0.015 , 3.55-0.015 , 3.73-0.014 , 3.90-0.013 , 4.11-0.012 , 4.30-0.011 , 4.56-0.010
got this from a Car Craft item I think
Tex
New best ET 10.259@129.65 .
New best MPH 130.32
Finally fitted a solid cam,
stepped it up a bit more
3690lbs through the mufflers
New World block 3780lbs 10.278@130.80 . Wowser 10.253@130.24 footbraking from 1500rpm
Power by Tex's Automotive
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Re: 489 pinion shims
[Re: tex013]
#1613663
04/29/14 08:53 PM
04/29/14 08:53 PM
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Joined: Jan 2003
Posts: 26,000
Rio Linda, CA
John_Kunkel
Too Many Posts
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Too Many Posts
Joined: Jan 2003
Posts: 26,000
Rio Linda, CA
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I really doubt if you can predict a pinion depth shim based on the gear ratio.
The INTERNET, the MISinformation superhighway
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Re: 489 pinion shims
[Re: Cab_Burge]
#1613665
04/30/14 04:22 PM
04/30/14 04:22 PM
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Joined: Jan 2003
Posts: 26,000
Rio Linda, CA
John_Kunkel
Too Many Posts
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Too Many Posts
Joined: Jan 2003
Posts: 26,000
Rio Linda, CA
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You don't need a crush sleeve to set the pinion preload when setting it up, only after the correct pinion depth is determined do you actually need to install a crush sleeve or spacer.
The INTERNET, the MISinformation superhighway
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If so it may be wise to take it to a shop that can set the pinon depth for you, much better than crushing multiple crush sleeves while setting the rear end up, BTW dicth the crush sleeves and go with a solid pinion bearing spacer like Ratech offers 
