Mark,
Is your 3 speed od a manual or automatic?
Also, I'm thinking the TBI would be much easier to make look "retro"
because it could sit on one of the 283 style (oil filler in the
manifold) intakes. That is what I have in mind. I have located an oil
bath intake that would be dandy if it will fit the throat of a TBI...
and if I can figure out how to put a paper element into it.
Mark Noakes wrote:
>
> I've mentioned before on the list that my 350 TPI V8 Corvette gets 28 mpg at
>75 mph on the highway. It has 2.73 gears behind a 700R4 and so it turns about
>1800 rpm at the same 75 mph. It weighs about 3600 lbs. The trucks weigh,
>what, maybe 4600 lbs? A rule of thumb I remember from my econo vehicle
>engineering days is that, every thing else being equal, that each additional
>300 lbs costs you about 1 mpg.
>
> I also have an 86 1/2 ton Chevy Silverado pickup with a 305, lockup torque
>converter automatic, and 2.73 gears. When it was new and back when the speed
>limits were 55 mph, I regularly got 21-22 mpg on the highway when I put the
>cruise control on 55 mph.
>
> My guess is that a TF truck with a 350 setup for low end torque (as in the
>TPI engines) instead of high rpm hp with the right gearing could get 22-24 mpg
>at 60 mph (before aerodynamics kicks in).
>
> My initial setup on the Suburban will be a non FI 350 retro'd to look like
>the old 283. With the 3 speed OD, the 3.90 will have a 2.73 final ratio, same
>as both my 86 vette and 86 pickup. If I can ever figure out how to make a TPI
>setup look retro, I will probably try that as well. In non FI mode, I'm
>hoping for 18-20 mpg; in TPI mode, I would be expecting a couple of mpg better
>than that.
>
> Mark Noakes
> 58/56 Chevy Suburban
> 59 GMC Suburban
> Knoxville, TN
>
> On Fri, 30 November 2001, "Mike " wrote:
>
> >
>
> > Well, personally I don't think you'll see that kind of milage with a V6 in
>
> > one of these trucks.
>
> >
>
> > Take a look at the MPG figures for the new full size V6 (injected, etc)
>
> > and expect a bit less than they get.
>
> >
>
> > I think a correctly geared and OD'ed 350 with fuel injection could get in
>
> > the low 20's for MPG.
>
> >
>
> > Just my .02:)
>
> >
>
> > Mike
>
> >
>
> >
>
> >
>
> > > [Original Message]
>
> > > From: <ldfinley@juno.com>
>
> > > To: <oletrucks@autox.team.net>
>
> > > Date: 11/30/01 11:32:29 AM
>
> > > Subject: [oletrucks] Fuel Injected V-6
>
> > >
>
> > > Hi All,
>
> > >
>
> > > Has anybody out there experimented by pulling out their old 216 or 225
>
> > > and putting in a small to midsize V-6 with fuel injection attached to an
>
> > > automatic overdrive tranny. I'd like to upgrade, but I am thinking ahead
>
> > > of the next time gas goes over $2.00+/gal.
>
> > >
>
> > > I'm thinking of a 3.0 Liter F**d or a similar GM product replacement. I
>
> > > know a lot of us like the venerable 350, but my experience with them is
>
> > > that they are somewhat thirsty, except when parked. I think it would be
>
> > > grand to get 25 to 30 mpg as we cruise along, lookin good.
>
> > >
>
> > > Any suggestions or admonitions?
>
> > >
>
> > > Thanks!
>
> > >
>
> > > Larry
>
> > > 1951 3100
>
> > > OKC, OK
>
> > > ________________________________________________________________
>
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>
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> > > oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959
>
> >
>
> >
>
> > --- Mike
>
> > --- passnb4u@earthlink.net
>
> > oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959
> oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959
oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959
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