[Tigers] fuel milage

Fri Dec 17 20:42:29 MST 2021

Found  the post.  https://www.catmbr.org/cat-forum/threads/toploader.4170/  He used the 2.90 1st gear and then used 2.72 rear gears. So, yes, he did get the effect of an overdrive without  the final Toploader ratio changing from 1 to 1. Jeep used a Toploader in 1980-86 that had a 3.00 1st gear and rather even spacing. It is known as the T-178. Looked long and hard for one of those and never found it. I believe it was used in the larger pick up they had at the time. Likely not strong enough for a built engine but for a stock to mild engine it accomplished what Malibu Review did and you got an aluminum case too.

-----Original Message-----
From: twotigers at verizon.net
To: 'Thomas Witt' <atwittsend at verizon.net>; tigers at autox.team.net
Sent: Fri, Dec 17, 2021 4:17 pm
Subject: RE: [Tigers] fuel milage

Look up Malibu Revue on the CAT website. He’s done a lot of toploaders with the (IIRC) 2.72 final drive.  From: Tigers <tigers-bounces at autox.team.net> On Behalf Of Thomas Witt via Tigers
Sent: Friday, December 17, 2021 12:45 PM
To: tigers at autox.team.net
Subject: Re: [Tigers] fuel milage  "... substitution of the 4th gear with a 5th gear"  Are you speaking of swapping only the Toploader 4th gear to something equal to an overdrive ratio (meaning 5th Gear - like)..., or are you stating to swap the whole Toploader 4 speed for something like a T-5, 5 speed?  The was an overdrive version of the Toploader that had an overdrive 4th gear. But as this link states it was not a performance transmission. http://davidkeetoploaders.com/imposters.htm   I believe is was used only in the 77-78 Ford Granada. Frankly I frequented wrecking yards back when they were prevalent (they are virtually non-existent today) and I never recall seeing anything but automatics. There was also the SROD overdrive 4 speed transmission. It has an equally bad reputation and a shifter location issue. Gear spacing was at least one of the problems with these transmissions. So, unless there is some special gear out there from the Toploader vendors the advantage is mileage only and not any reliability or performance driving enhancement.

-----Original Message-----
From: Allan Ballard <aballard at ix.netcom.com>
To: clydemclaughlin at verizon.net
Cc: Tiger List List <tigers at autox.team.net>
Sent: Fri, Dec 17, 2021 12:18 pm
Subject: Re: [Tigers] fuel milageI want to thank those who responded as you’ve provided much food for thought.   With my engine I’d consider mid-20s MPG to be a victory.  One option that hasn’t been chronicled for those with stock 4 speed top loaders is substitution of the 4th gear with a 5th gear.  For the  open road of course.  ~Allan Ballard~~Mk1a Tiger~~Series I Alpine   Sent from my iPhone
On Dec 11, 2021, at 2:56 PM, clyde mclaughlin via Tigers <tigers at autox.team.net> wrote:
I need to preface this posting with the idea that everyone will have comments on their personal experiences and ideas about fuel milage. I don't want to start a two week dialog on the subject, but would like to through out a few of my opinions on the subject.  First and foremost fuel mileage and rear tire  wear has a direct correlation to your right foot! Secondly gearing would be the next most bang for the buck, i.e. stock 2:88's and a 5speed OD transmission, followed with good engine tuning.  Tire size that was previously mentioned would be very negligible given the restrictions of tire/rim combinations for our Tigers.  I recall in the 50's when the hot dodders were jacking up the rear with spring shackles and other methods, us sports car people laughed and figure they have done it for fuel mileage because now it is going down hill all the time, Ha Ha! I can comment that my car had 3:54 gears with the 4 speed and a k code engine, mileage about as poor as it gets, I currently have 3:07 gears with a 5speed and with 70-75 highway speed I get 23-25mpg.  Carb fuel  mixture is about 3.5% CO with less than 200HC at idle and runs very well, it will lean out to about 2.5%CO and 150HC at a no load 2000rpm.  Forgot to mention I have 13 inch tires, 205/60 rear 185/60 front.

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