final drive ratio ?
ok my buddy is sell a ring and pinion outta of his off road bronco he told me it was a 4.56 to 1 had it in for a month said it wasnt small enough i dont care about my mpg if i was id drive a geo what do you guys think good idea for bad wat else will need to be change/stronger to hold up to it
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That might be too much gear for a daily driver and I expect it will hurt your MPG's!!
I think you would be happier with 3:55's or maybe 3:73's tops.
To each his own. -
Yeah, my 4.30s put it in OD by like 25-30mph unless you're beating on it. And it doesn't like going much over 62, the rear starts getting really noisy.
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Slicktop '91 GS HO 4.30 rear. '82 Mark VI Tudor HO, '90 F-150 XLT, '62 project Heep, '89 Arizona Waggin' and '88 donor in PA, getting combined.Comment
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I drive around with the shifter on 3rd, I don't shift into OD until I get on the highway and hit at least 60mph. With 3.08's I can easily get away with that. I hate how the stock governor shifts so early.88 Town Car (wrecked, for sale)
Walker OEM duals with muffler deletesComment
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bit much.
Just to put it in perspective, your stock 3.08 rear with an AOD and stock size tires spins the motor at 1744 rpm at 65 mph. With a 4.56, you're at 2582 rpm. At 75, you're talking 2012 rpm vs 2979 rpm. It'll do it, but it won't be super comfortable about it. When you've got a motor that makes absolutely no power over 4200 rpm, you don't need to get it there overly soon.
Nick's rear I suspect is just screwed up. It should not be making noises over 60 mph with a 4.30. Motor will be spinning a bit much, but it should not be unhappy about it.Last edited by gadget73; 09-22-2015, 05:41 PM.86 Lincoln Town Car (Galactica).
5.0 HO, CompCams XE258,Scorpion 1.72 roller rockers, 3.55 K code rear, tow package, BHPerformance ported E7 heads, Tmoss Explorer intake, 65mm throttle body, Hedman 1 5/8" headers, 2.5" dual exhaust, ASP underdrive pulley
91 Lincoln Mark VII LSC grandpa spec white and cranberry
1984 Lincoln Continental TurboDiesel - rolls coal
Originally posted by phayzer5
I drive a Lincoln. I can't be bothered to shift like the peasants and rabble rousersComment
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good to know ill just keep what i got till i can make more power outta the motorComment
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