On Thu, 19 Oct 2000, Michael Kuriger wrote:
> Would 3.21's work on a 4.7 durango? My friend has a 96 formula firebird with 3.2x
> gears and he gets 27 MPG on the freeway with his 325 HP 5.7 liter engine. His 6th
> gear is a .5 ratio and at 140 MPH his tack is at 3400 RPM's.
>
Yep, but on something that heavy, I would think it would be a real dog
off the line. Maybe that doesn't matter (doesn't to some people), but
if you were looking for off the line performance along with a more
gas mileage friendly final ratio, I might be inclined to look into something
like the Gear Vendors overdrive unit. Its definitely not cheap, but
might be worth it, depending on what the owner wants in a vehicle.
A big part of your friend's gas mileage equation are the sleek lines
and lower stance of the Firebird, especially in comparison to a Durango.
Plus, his engine doesn't have to work as hard to do the same work due to
the power difference and the weight difference.
-Jon-
.---- Jon Steiger ----- jon@dakota-truck.net or jon@twistedbits.net ------.
| Affiliations: AOPA, DoD, EAA, NMA, NRA, SPA, USUA; Rec & UL Pilot - SEL |
| '92 Ram 150 4x4 V8, '96 Dakota V8, '96 Intruder 1400, '96 FireFly 447 |
`------------------------------ http://www.cs.fredonia.edu/~stei0302/ ----'
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