Re: IML: overdrive torqueflite and stall speed

[sosmi@xxxxxxxxxxx]

Rob, I have an 81, and always felt it to be a poor performer,at least in my eyes. And  compared to my 89 Diplomat police pkg, 318 4bbl hp,998, non lock-up 2.71 1st gear, and 3.21 gear, well there was no comparing.I made a shot-gun statement, assuming you used the original configuration. And continue to stand by it. No question, a better rear ratio,3.21- 3.55-3.91, the bigger engine, and the 518 would be an  AWESOME package. For me, I'm building a 444 B motor, I've always preferred big blocks, so my feeble 318 goes.Ya'll have a nice day, Dave.

 

> -------------- Original message -------------- 
> From: "Rob P" <fristpenny@xxxxxxxxxxx> 
>
> > I expressed interest in adding an o/d to my "feeble" small block 80's 
> > Imperials. First of all, there is no reason it would be a mistake. As long 
> > as you lower the rear gear you will end up with the best of both worlds as 
> > far as mpg and accelleration. I was the one that brought up the highway 
> > gears and stated I would be changing them. BTW, my '83 is a small block car 
> > and probably has more hp than 95% of the Imperials out there-it's got a 
> > Magnum 360. I understand where you're coming from, but you lose nothing by 
> > adding the o/d since the lower gears are identical just with the addition of 
> > 4th. 
> > 
> > Rob 
> > 
> > >From: sosmi@xxxxxxxxxxx 
> > >Reply-To: mailing-list@xxxxxxxxxxxxxxxx 
> > 
> >To: mailing-list@xxxxxxxxxxxxxxxx 
> > >Subject: Re: IML: overdrive torqueflite and stall speed 
> > >Date: Thu, 14 Dec 2006 01:12:15 +0000 
> > > 
> > >Interesting, but somewhat misleading. First the Lock-up converters do not 
> > >retrofit to 727's, the trans would not be slipping, in over-drive only the 
> > >torque converter, and that amount of slippage is NEVER at stall speed.It 
> > >would never be as much, as a car, or truck pulling a boat, or travel 
> > >trailer.Thats why you add trans coolers.No doubt adding the over-drive to 
> > >an 80's Imp would be a mistake, they were already feeble enough.Most 
> > >members that expressed interest in OD. have big block motors, they make 
> > >peak torque at 2000-2600 rpm. Peak torque, is always the best rpm to run 
> > >an engine at, its usually most fuel efficient too. Ya'll have a nice day, 
> > >Dave 
> > > 
> > 
> > ____
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