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08-19-2014, 12:01 PM
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Registered User
Join Date: Jan 2013
Location: Las Vegas, NV
Posts: 1,853
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Re: New rear end/differential??
I posted a rpm chart on build thread. It is the same info everyone needs to start with. My tires are 28 inches tall, not much shorter than stock. 3.73 posi rear at 65 in in 1:1 I am at 2200 to 2400 on the chart. It's is yellow for sweet spot. You can go Higher for mileage or Lower for power. Now it drops with my overdrive to 2000 at 75. My 81 ran 350/350 and 3.08 and 295/50/15 at 3000 rpm at 75to 80.
http://www.adamsdriveshaftoffroad.co...rts-tech-info/
__________________
1962 shortbed 408cui small block, TKO 600 5-speed, bagged Porterbuilt suspension. 18" Salt Flats http://www.cardomain.com/ride/332579...t-c-k-pick-up/ http://67-72chevytrucks.com/vboard/s...d.php?t=560081 |
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