How much of a performance difference would I notice with a posi rear? - Page 2 - Hot Rod Forum : Hotrodders Bulletin Board
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  #16 (permalink)  
Old 08-07-2011, 08:39 PM
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Hey tech I thought you were in Phoenix is North Carolina a suburb of Phoenix now?

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  #17 (permalink)  
Old 08-07-2011, 08:58 PM
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Originally Posted by spinn
Multipling the torque from 2.76 gears to 3.73 is a nice choice, for those who can take cruising 65 at 3000rpm . That is with one wheel or two spinning.

When I had My Chevy Luv with a 9'' ford under it.. I had 4.56 gears and would run 60mph at 3000 rpm's.. Anything over that, And it would sound like something was going to give at any min..

And that was with 31'' tall tires..
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Old 08-08-2011, 07:12 PM
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Originally Posted by bnun12
Hey tech I thought you were in Phoenix is North Carolina a suburb of Phoenix now?
Moved back here to live with my daughter for a while.
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  #19 (permalink)  
Old 08-08-2011, 07:20 PM
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Tech

Good to see you back on the board. I missed your wit and wisdom.
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  #20 (permalink)  
Old 08-09-2011, 10:15 PM
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Quote:
Originally Posted by valtiel43
how much more performance would I notice?
Better broadies for sure!
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  #21 (permalink)  
Old 08-10-2011, 03:35 PM
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Quote:
Originally Posted by valtiel43
Well judging from what I've heard a posi rear seems like it will really unleash the beast in this car.
Your missing what everyone is saying. If your not having traction problems a posi rearend will do nothing for you. Sure it will lite up both tires when u do burn out but thats not your problem. You need to have your gears matched to the compression and cam of the engine and stall of the converter. I have an 86 cutlass that had a 7.5" rear end with 2.41 gears. They sucked. Great for highway cruising and economy but that's it.
U asked what breaks on them. Last summer my posi unit failed at about 250whp.... then the small axles are an issue and the small pinion and then ring gear deflection... 7.5" ring gear sucks. Not worth putting money into . Look up my post on putting a Ford 8.8" rearend in my gbody. Cost me a total of about $400 and has posi and 3.73 gears and a huge ring gear and big axles.
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  #22 (permalink)  
Old 08-10-2011, 05:25 PM
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Quote:
Originally Posted by valtiel43
how much more performance would I notice?
And if you lift or downshift while driving into a turn at speed or in the rain, you will quickly learn the meaning of "lift-oversteer".
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