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i have 2.75 gears and 265-75-16's in my 66 and i regularly take off in second gear in my 435 np even with over a ton of wood in the bed (which is 3.34 to 1 gear ratio and i can break the right rear tire loose with the same load) compared to the 3.00 to 1 gear ratio in the 3 speed you should have in your truck (which the c6 in comparison is 2.46 to 1 in first gear IIRC) so if you went with around a 3.00 gear you should be just fine and not have to "ride the clutch" here's a little inspiration just to show you what all i did on a regular basis with my 2.75 gears and my setup
Dang!, that is a working truck for sure! Thanks for that info on the gearing this is what I needed to plan my setup. Next steps will be to look under mine and see if I can get the existing ratio numbers off the third member, and somehow I need to know the spline count (do I have to pull an axle, or is there another way to know this?), then my search is on for the right 3rd member. Thanks again Smokenchocken, C
Try to find a 2.75 set if you can. Pair that with 31-32" tires and you'll have a nice highway gearing. Your FE will still have plenty of accelerating power, it just won't be a speed demon.
I had mentioned in my previous post that the budget would dictate the transmission that could be installed and that it would likely be more costly (on the front end) than a simple 3rd member/gear swap.
If the current transmission works, it can continue to be used while another transmission (overdrive), and all the related install parts are gathered. Once all the needed components are gathered, the transmissions can be swapped.
This would spread the cost out over time and not destroy the budget by trying to do it all at once. --it's the same thing I'm doing with my Ford 4R70W 4-spd automatic overdrive transmission.
I have most of the rebuild parts/tools to rebuild it. In the mean time, my stock C-4 gets the truck around until I can rebuild the 4R70W transmission that will replace the non-overdriven C-4. --by the way, I've never rebuilt an automatic transmission before.
A truck with no overdrive has to be geared to do one thing or the other; either it will be geared to pull heavy loads and will get poor mileage in the process or, it'll be geared to cruise at highway speeds, get decent mileage but will be greatly lacking in the ability to pull loads.
An overdrive transmission is the common denominator that will allow the truck to handle BOTH scenarios very well.
Alright UltraRanger, very well spelled out there; the question is back to my original post - what OD trans? And several folks have called out options in the thread like the TKO ($$$), the 78-80 version of the 4 speed with an OD that wasn't really very strong; used in passenger cars and vans and one other one I can't recall (maybe the one I was thinking in the beginning…. Borg Warner 3 speed with OD). i just need one and probably can't swing the TKO now. I like the idea of just getting the vehicle back up and running (engine is out and on a stand in my shop for rebuilding now) and continue to source a solution. You guys help me out if possible finding a good trans for it.
NV4500 or ZF5/6 out of a wrecked truck would be cheap.
Thanks 351C, the search is on and I'm heading out to the shop to keep going on the FE teardown and inspection! I'll post up some pics of this truck and engine, but if you guys are interested, this is an intro video I put on my blog and youtube channel a few months back.
Rezvani's Latest Post-Apocalytic Monster Is a Ford F-150 Raptor Underneath
Slideshow: Called the Fortress, the 850-horsepower pickup combines Raptor underpinnings with military-inspired features, survival equipment, and a starting price of $285,000.
