As an earlier post today mentioned, the new A518 trans are not as efficient as
the older 727 and 904s. Something to do with progress!
Spoke to DC, racing guys, MPP and they said the same thing, the newer
electronically controlled (computer) trans just isn't as efficient. Only option
is to put a torque converter ($400 plus install) in trans. Change the rear to
3.92 diff and try that. Am in the process now of doing that. First want to get
more hp out of the engine with a few more mods and experimenting. Thankfully,
not off my mney tree. it is brown and withering anyway.
Jim
Bernd D. Ratsch wrote:
> Sorry to say, but i'm not familiar enough with the new Automatics from
> Chrysler to give any suggestions on what to change. Can anyone else help
> him out? (Only dealt with the 727's and 904's...and the "other brand".)
>
> -----Original Message-----
> From: owner-dakota-truck@buffnet4.buffnet.net
> [mailto:owner-dakota-truck@buffnet4.buffnet.net]On Behalf Of James
> Harmon
> Sent: Saturday, June 26, 1999 12:16 AM
> To: dakota-truck@buffnet.net
> Subject: Re: DML: Rear Wheel Horsepower
>
> The hp listed and 68% transfer efficiency is on a 97 with an automatic
> trans.
> With a 5 spd, I am sure the efficiency in up to around 75% or better. We
> can
> change all this anyway. It simply helps to understand the differences in
> discussion.
> As far as alternative solutions - what you got in mind? Whose money tree
> are we
> going to raid? With the A518 trans, there is only so much you can get out
> of
> it.
>
> Bernd D. Ratsch wrote:
>
> > If you're loosing that much power due to the driveline, you may want to
> find
> > an alternative solution before putting anything else on the vehicle.
> Also,
> > let me clarify this: the 200HP mark that I gave was a very general
> example.
> >
> > 400HP FW and 270HP RW?? That's a 130HP loss and not even worth the money
> > anymore. As I said, if you're loosing that much HP through the
> driveline,
> > you've got a problem. Normally there shouldn't be more than a 20-30% max
> > loss.
> >
> > -----Original Message-----
> > From: owner-dakota-truck@buffnet4.buffnet.net
> > [mailto:owner-dakota-truck@buffnet4.buffnet.net]On Behalf Of James
> > Harmon
> > Sent: Thursday, June 24, 1999 11:59 PM
> > To: dakota-truck@buffnet.net
> > Subject: Re: DML: Rear Wheel Horsepower
> >
> > To answer a query about rear wheel hp and flywheel hp, you loose about 40%
> > due to
> > the drive train. factor that out from the 245 hp for the 360 engine and
> > that
> > gives you around 166 hp (with 68% efficiency). The stock 318 runs only
> > around 153
> > hp at the rear wheels. This is the reality and not the DC hype. That is
> > why some
> > people are not too impressed with a 225 +17 hp at the rear wheels for my
> > truck.
> > That is until they realize what it really means - 355 hp at the flywheel.
> > And
> > that is without a supercharger. Our eventual goal is to get around 270 hp
> > at the
> > rear wheels or almost 400 hp at the flywheel.
> > Jim
> >
> > Bernd D. Ratsch wrote:
> >
> > > I was mainly giving a average example. I personally don't know what the
> > > rearwheel HP is of an R/T...but it should be above 200 IMHO.
> > >
> > > At 03:15 PM 06/24/1999 -0400, you wrote:
> > > > Bernd wrote "Doesn't that sound a little bit low for the HP
> > gains??
> > > >The average gains from the Paxton's are 40%. Now take a (low powered)
> > engine
> > > >at 200HP and
> > > >that gives you an 80HP boost. (The R/T's should be well above 200HP.)
> "
> > > >
> > > > Bernd, are you talking, at the rear wheels ? 200 hp..
> > > > Ted O.
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