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5 speed for a straight 6
Posted: April 2, 2013, 3:19 pm
by frank66
I would like to put a 5 speed behind my 300. It seems like the two obvious choices would be a M5OD or ZF S5. Has anyone here used one of these? Is there another good option I should look at? I am leaning towards the ZF because it seems a little more heavy duty.
M5OD-R2 ratios
1 - 3.91
2 - 2.24
3 - 1.49
4 - 1.00
5 - 0.80
R - 3.39
ZF S5-42 ratios
1 - 5.72
2 - 2.94
3 - 1.61
4 - 1.00
5 - 0.76
R - 5.24
Re: 5 speed for a straight 6
Posted: April 2, 2013, 3:27 pm
by Blackwaterforge
I had a ZF in a 88 F-350 with a 300 6 cylinder.
250,000 miles I never had a issue.
Had a ZF in a 95 F-350 7.3.
400,000 miles never a issue with the transmission.
I had to replace the slave cylinder twice.
Re: 5 speed for a straight 6
Posted: April 2, 2013, 4:19 pm
by Greg D
Depends on what you use the truck for.
Driver/light towing up to around 3000 lbs - M5OD is more than sufficient.
These were used in gas F 250s also BTW.
I don't remember which is which but the R1 & R2 look similar - one is for Rangers.
If you have some huge 8000 lb 5 th wheel you wanna drag use the ZF.
But then if you are hauling that grab a diesel engine while you are at it.
Re: 5 speed for a straight 6
Posted: April 2, 2013, 7:05 pm
by frank66
I will be hauling / towing about 3500 pounds weekly. And I like to enjoy an occasional burn out.
I would like the lower first and reverse gears of the ZF for manuvering my trailer around. After a quick search on craigslist, there seems to be more ZF's than M5's available and they are going for about the same price.
Re: 5 speed for a straight 6
Posted: April 3, 2013, 7:55 am
by 64 f100
Burn outs? With any modern transmission and aluminum housings, you may be asking for problems. Just remmember these are used transmissions your talking aobut.
Rich