Tech article by Jon Hanna (Admin)

Manual Trans Intro
• Gear Ratio Chart
• NP435
• T18
• Toploader
• ZF
• NV4500
See also: Automatics

Tech article by Jon Hanna (Admin)

Manual Trans Intro
• Gear Ratio Chart
• NP435
• T18
• Toploader
• ZF
• NV4500
See also: Automatics

Tech article by Jon Hanna (Admin)

Manual Trans Intro
• Gear Ratio Chart
• NP435
• T18
• Toploader
• ZF
• NV4500
See also: Automatics

Tech article by Jon Hanna (Admin)
As much as you love your Bronco for the amazingly capable machine it is from the factory, you probably love to rip stuff out and improve it even more. For many of us the stock transmission is fairly high on that upgrade list.
The 3 speed manual or C4 automatic that [...]

Tech article by Josh Wilczynski (kontinu)

Tech article by Aaron Modlin (BUCKETOBOLTS)
I snapped a few PICs as I’ve been working on my C4 rebuild and thought I’d share how I modified my transmission. Most early Bronco and truck application transmissions are already well equipped. The input shafts are usually hardened. They have the “H” servo and five forward clutches. They are [...]

Tech article by Larry C. (MarsChariot)
General Comments
The following comments are based on my experience installing a complete Advance Adapters NV3550 5-speed conversion kit into a ‘71 Bronco in the summer of 2002. The conversion is a perfect fit and is not particularly difficult. It requires almost no modifications or fabrications, almost as though it was [...]

Tech article by Clay McGuill (eBronc)
NV3550. NV4550. ZF S5-42. No, they’re not map coordinates – just a few of the manual transmissions popular for swapping into Early Broncos. Whether to gain a low “crawler” gear for offroad use, an overdrive for highway travel, or for the strength and easy shifting a modern transmission gives, getting [...]

Tech article by Cory Walden ( Desert Thrasher )
This article is about how to convert your stock mechanical linkage clutch to a much improved hydraulic set-up using readily available aftermarket parts. It is a very simple conversion all you will need is a slave cylinder, master cylinder, rod [...]

Tech article by Tim Bowsher (Broncobowsher)
Selecting a new transmission.
It started with when I got the latest Bronco. I didn’t want the old 3 speed anymore. I have heard about the NP435, so I got one. I ran along happily with 33’s, 4.10’s, and the NP435 behind the warmed up 351. It worked ok. The [...]