bronco 4-speed ?
Fleet Mechanic
Joined: Sep 2003
Posts: 1,979
Likes: 2
From: central ohio
it was a '89 302. dropped a valve somewhere before 100K miles. 3.55 gears, i knew of a neighbor that had a '78 bronco with a np435 trans. i beileve he bought it new. id rather have the "creeper 1st" 4 speeds over the 5 speed o/d just for those times you need a deeper 1st and want to save some clutch life, like pulling a boat up out of the boat ramp. gives you a deeper reverse as well. o/d doesnt add much mpg savings. i did a test once one week without using o/d in my ranger, milage only dropped 1-1/2 mpg. sure over a long distance it would add up, but on a 24 mile round-trip commute, no big deal.
The Southernmost Mod
Joined: Dec 2004
Posts: 6,902
Likes: 20
From: Caracas, Venezuela
I know you were referring to a 302 engine, since the format you used to describe both trucks was: Year vintage / Engine / Transmision. The mistake was writting a 303 instead of 302. Anyway, yes, there have been Broncos with 4 speed manuals. One popular swap also is placing a ZF 5 speed which is HD and would give you a granny gear you would love.
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Senior User
Joined: Oct 2008
Posts: 121
Likes: 0
From: uniontown,pa.
yeah, i kinda hope it has the stump puller gear, sorta like a deep reduction in the macks. still tryin to get some good pics, it's in an impound lookin yard he keeps certian vehicles in and he's OTR alot but i''ll get the deal done sooner or later.
NP435
T-18
Lead Driver
Joined: Sep 2002
Posts: 9,182
Likes: 12
From: Gateway to the West
Both the T-18 and the NP435 have significantly low 1st gears. T-18 1st is 6.32:1 and the NP435 1st is 6.68:1. I'd be happy with either unit though I really like the 435 my brother has behind the 300 is his early Bronco. (yes, he stuffed a 300 under the hood of a '74).
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