The Ford Barn

waxhead · 03-01-2014, 04:21 AM

I have a touring motor with Snyder 6.0 head, webber carby kit and tubular headers installed. I will be installing a Mitchell synchro transmission soon, with the 1st and 2nd gears which are geared 15% higher than standard. I am looking to increase my top end speed by changing the gears in the rear end.

My question is, given the higher gearing of the synchro transmission (in 1st and 2nd) which gears would you recommend in the rear end, 3.54 :1 or 3.27 :1 ?? There are no hills or mountains anywhere near where I live.

Any info appreciated. Thanks

colin1928 · 03-01-2014, 04:49 AM

3:54:1

waxhead · 03-01-2014, 05:02 AM

Thanks Colin.............again

colin1928 · 03-01-2014, 05:08 AM

3:78:1
Is what you should have in your PU it is in most A,s except roadsters which had the 3:54:1

Patrick L. · 03-01-2014, 07:18 AM

Roadsters had 3:54s ?

John LaVoy · 03-01-2014, 09:41 AM

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The 3:54 set is really a nice package. We are running that ratio in the roadster pickup.

Kurt in NJ · 03-01-2014, 10:21 AM

What is your top speed now ---what is your top speed goal?

waxhead · 03-01-2014, 08:02 PM

My goal is to increase the top speed without losing too much low speed drivability, and without getting a two speed/over-drive (for now)

Tom Wesenberg · 03-01-2014, 08:09 PM

Quote:

Originally Posted by waxhead

My goal is to increase the top speed without losing too much low speed drivability, and without getting a two speed/over-drive (for now)

I'd install a 3.27 ring and pinion.

Bruce,Upstate NY · 03-01-2014, 08:57 PM

With no hills and the new first and second gear ratios I'd go with a 3.27 rear which would be about the same as a Mitchell OD in high range ahead of a 3.78. Really nice easy cruising at 55 mph on the highway.

waxhead · 03-01-2014, 11:00 PM

Thanks for the feedback and opinions, appreciate it.

03-01-2014, 04:21 AM	#1
waxhead Senior Member Join Date: Apr 2013 Location: West Australia Posts: 346	Mitchell synchro transmission and gearset I have a touring motor with Snyder 6.0 head, webber carby kit and tubular headers installed. I will be installing a Mitchell synchro transmission soon, with the 1st and 2nd gears which are geared 15% higher than standard. I am looking to increase my top end speed by changing the gears in the rear end. My question is, given the higher gearing of the synchro transmission (in 1st and 2nd) which gears would you recommend in the rear end, 3.54 :1 or 3.27 :1 ?? There are no hills or mountains anywhere near where I live. Any info appreciated. Thanks

03-01-2014, 04:49 AM	#2
colin1928 Senior Member Join Date: Mar 2013 Location: Australa Melbourne Posts: 878	Re: Mitchell synchro transmission and gearset 3:54:1

03-01-2014, 05:02 AM	#3
waxhead Senior Member Join Date: Apr 2013 Location: West Australia Posts: 346	Re: Mitchell synchro transmission and gearset Thanks Colin.............again

03-01-2014, 05:08 AM	#4
colin1928 Senior Member Join Date: Mar 2013 Location: Australa Melbourne Posts: 878	Re: Mitchell synchro transmission and gearset 3:78:1 Is what you should have in your PU it is in most A,s except roadsters which had the 3:54:1 Last edited by colin1928; 03-01-2014 at 05:35 AM. Reason: update

03-01-2014, 07:18 AM	#5
Patrick L. Senior Member Join Date: May 2010 Location: Largo Florida Posts: 7,225	Re: Mitchell synchro transmission and gearset Roadsters had 3:54s ?

03-01-2014, 09:41 AM	#6
John LaVoy Senior Member Join Date: May 2010 Location: Rocklin, CA Posts: 1,219	Re: Mitchell synchro transmission and gearset Sponsored Links (Register now to hide all advertisements) The 3:54 set is really a nice package. We are running that ratio in the roadster pickup.

03-01-2014, 10:21 AM	#7
Kurt in NJ Senior Member Join Date: May 2010 Location: on the Littlefield Posts: 6,159	Re: Mitchell synchro transmission and gearset What is your top speed now ---what is your top speed goal?

03-01-2014, 08:02 PM	#8
waxhead Senior Member Join Date: Apr 2013 Location: West Australia Posts: 346	Re: Mitchell synchro transmission and gearset My goal is to increase the top speed without losing too much low speed drivability, and without getting a two speed/over-drive (for now)

03-01-2014, 08:57 PM	#10
Bruce,Upstate NY Senior Member Join Date: May 2010 Location: Odessa, NY Posts: 385	Re: Mitchell synchro transmission and gearset With no hills and the new first and second gear ratios I'd go with a 3.27 rear which would be about the same as a Mitchell OD in high range ahead of a 3.78. Really nice easy cruising at 55 mph on the highway.

03-01-2014, 11:00 PM	#11
waxhead Senior Member Join Date: Apr 2013 Location: West Australia Posts: 346	Re: Mitchell synchro transmission and gearset Thanks for the feedback and opinions, appreciate it.