Transmission help

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Nov 5, 2018 | 07:14 PM

71f250guy

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Transmission help

I have tried to find my best answer with no help...i have a 71 ford f250 custom 2wd with 360fe it is going under full rebuild at a shop...tranny question is what would be best for just a daily driver im not gonna 4x4 it not gonna race it not gonna tow with it just want good Hwy driver..stock block bored with mild cam 390 crank new edelbock intake and carb if that helps...also has dana 60 rear with 4.10 gears and is a 4speed manual thanks for any input!

Nov 6, 2018 | 11:03 AM

krewat

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From: Long Island USA

Isn't there an NV3500/4500 conversion available? 5-speed with overdrive.

https://www.ford-trucks.com/articles...-transmission/

Nov 7, 2018 | 12:16 PM

baddad457

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From: south louisiana

Put a Toploader 4 speed in it. Only thing you'll need to modify is the length of the driveshaft.

Nov 7, 2018 | 02:29 PM

'65Ford

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Quote:

Originally Posted by 71f250guy

What would you like to improve over your current 4 speed? I have an NP435 with 4.10 rear and am considering a gear vendor overdrive for interstate driving. They're expensive but known for strength and durability. Some guys have swapped to an NV4500 (requires an adaptor) and other guys have went to a TKO. Both would likely be good for your scenario. There is also an overdrive box by advance adaptor which requires you cut the snout on say a NP435.

If you won't be towing much, going to a lower rear ratio may suffice.

Nov 7, 2018 | 05:44 PM

69cj

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From: Middle Tn.

Off subject but add a set of headers to your build.

Nov 7, 2018 | 05:46 PM

baddad457

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From: south louisiana

Quote:

Originally Posted by 71f250guy

Might want to post what size tires you're running here. 4.10 may not be all that bad on the freeway with tall tires.

Nov 7, 2018 | 07:50 PM

85e150

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Quote:

Originally Posted by 71f250guy

Get car 390 pistons with a 1.77" (approx.) compression height. Truck 390 pistons are 1.66" compression height for that low, low, low compression Ford (and everyone else) liked in truck engines. If you aren't going to tow or haul massive loads over mountain passes, the 9.5ish compression will work in your favor on all fronts in your rebuild. Serving suggestion.