So, I know it is not that easy to adapt many two wheel drive transmissions to four wheel drive applications. Things like differences in spline count on output shafts, etc. always ruin people's plans. Anyhow, I was wondering if the same were true on the ZFs. Can you pull the tailshaft housing off a 2WD ZF and install an intermediate adapter to bolt on a transfer case with little to no additional mods?
Big reason I ask is I know where there is a busted ZF (very cracked bell housing) that still has the intermediate adapter on. If I could grab that adapter, might be easier to find a 2WD ZF and mate the two. No particular project in mind for this. Just a potential swap in to something one day.
ZF question(s)
-
akaFrankCastle
- Official CCB Member
- Posts: 4901
- Joined: Wed Oct 27, 2010 5:25 pm
ZF question(s)
Stroppe'd
1972 Sport, 302, 3 speed with old school Duff floor shifter, T shift Dana 20 with JB Fab twin stick, 4.11 gears with Trac-loc, Lincoln hydroboost, Chevy disc conversion, WH gas lift gate shock kit, 33" Duratrac tires on slots and about 2.5" of lift, Stroppe installed: bumper braces, dual shocks on all four corners, GM power steering, trans cooler mount, auto shift column, rollbar.
The Terrible One
1972 Sport uncut, 302, C4 with 1974 column , T shift Dana 20, 3.50 gears w/ limited slip, 1966 U13 Roadster kick panel, and factory power steering.
1973 Stroppe Baja project
1972 Sport, 302, 3 speed with old school Duff floor shifter, T shift Dana 20 with JB Fab twin stick, 4.11 gears with Trac-loc, Lincoln hydroboost, Chevy disc conversion, WH gas lift gate shock kit, 33" Duratrac tires on slots and about 2.5" of lift, Stroppe installed: bumper braces, dual shocks on all four corners, GM power steering, trans cooler mount, auto shift column, rollbar.
The Terrible One
1972 Sport uncut, 302, C4 with 1974 column , T shift Dana 20, 3.50 gears w/ limited slip, 1966 U13 Roadster kick panel, and factory power steering.
1973 Stroppe Baja project
-
Justin
- Official CCB Member
- Posts: 6199
- Joined: Sat Oct 09, 2010 11:04 pm
Re: ZF question(s)
http://classicbroncos.com/ZF_Transmission_Swap.shtml
Great, now you've got me thinking about a ZF someday. Thanks.
Great, now you've got me thinking about a ZF someday. Thanks.
-
akaFrankCastle
- Official CCB Member
- Posts: 4901
- Joined: Wed Oct 27, 2010 5:25 pm
Re: ZF question(s)
Justin wrote:http://classicbroncos.com/ZF_Transmission_Swap.shtml
Great, now you've got me thinking about a ZF someday. Thanks.
I remember that write up. I appreciate that guy's ingenuity, but I dunno if I would trust my doing something like that.
I actually did a bit of googling after I posted this thread. Yeah, imagine that. Answers to almost any question are out there on the internet. Looks as if there is a difference in spline count and diameter on the output end of the main shaft.
Stroppe'd
1972 Sport, 302, 3 speed with old school Duff floor shifter, T shift Dana 20 with JB Fab twin stick, 4.11 gears with Trac-loc, Lincoln hydroboost, Chevy disc conversion, WH gas lift gate shock kit, 33" Duratrac tires on slots and about 2.5" of lift, Stroppe installed: bumper braces, dual shocks on all four corners, GM power steering, trans cooler mount, auto shift column, rollbar.
The Terrible One
1972 Sport uncut, 302, C4 with 1974 column , T shift Dana 20, 3.50 gears w/ limited slip, 1966 U13 Roadster kick panel, and factory power steering.
1973 Stroppe Baja project
1972 Sport, 302, 3 speed with old school Duff floor shifter, T shift Dana 20 with JB Fab twin stick, 4.11 gears with Trac-loc, Lincoln hydroboost, Chevy disc conversion, WH gas lift gate shock kit, 33" Duratrac tires on slots and about 2.5" of lift, Stroppe installed: bumper braces, dual shocks on all four corners, GM power steering, trans cooler mount, auto shift column, rollbar.
The Terrible One
1972 Sport uncut, 302, C4 with 1974 column , T shift Dana 20, 3.50 gears w/ limited slip, 1966 U13 Roadster kick panel, and factory power steering.
1973 Stroppe Baja project
-
Gunnibronco
- Official CCB Member
- Posts: 4077
- Joined: Mon Jan 03, 2011 5:07 pm
Re: ZF question(s)
Justin wrote:http://classicbroncos.com/ZF_Transmission_Swap.shtml
Great, now you've got me thinking about a ZF someday. Thanks.
I found info on the diesel forums. Have to change the mainshaft & intermediate housing about $600 in parts, so finding a 4x4 trans is worth it. Or do the CB mod above, but I didn't like that option, spinning @ 3000 rpm.
Great minds think a like. Seems like the natural progression from a NP435. Loose a little on the 1st gear, but you can make it up in the axles, and still get a better cruising RPM on the highway.
All based on J-case D20
NP435 33s, w/4.10s crawl ratio of 65:1
NP435 33s w/4.10s @65 mph = 2713rpm
ZF, 33s w/4.56s =crawl ratio of 62:1
ZF, 33s w/4.56s @65mph= 2293rpm
zf,33s w/4.86 = crawl ratio 66:1
ZF,33s w/4.86 @65mph=2444 rpm
ZF, 33's w/5.13= CR 70:1
ZF, 33's w/5.13 @ 65mph= 2580rpm
"America is at that awkward stage. It's too late to work within the system, but too early to shoot the bastards." ΓÇô Claire Wolfe
74-AWB 98", ZF5, Atlas4, HP609s, ARBs, 37's, 3.5" lift-5.5" front coil springs, Tahoe rear springs, EFI 302, h-boost, 4x4x2 hyrdo assist, custom dash & gauges
72 U15- Explorer Sport-Candyapple Red (1 of 141)
74-AWB 98", ZF5, Atlas4, HP609s, ARBs, 37's, 3.5" lift-5.5" front coil springs, Tahoe rear springs, EFI 302, h-boost, 4x4x2 hyrdo assist, custom dash & gauges
72 U15- Explorer Sport-Candyapple Red (1 of 141)
-
Justin
- Official CCB Member
- Posts: 6199
- Joined: Sat Oct 09, 2010 11:04 pm
Re: ZF question(s)
That does sound like a good option, especially since they actually came behind fords. Lots to change out, though when you figure in diffs and stuff. I'm hoping someday to go to 37's too, not much ability to go lower than 5.13s, would spin pretty low revs on the highway. That said, it looks like the 5 speed ones are only about 50lbs heavier than an NP435. I'd guess durability isn't that different, too, given advances in metallurgy and manufacturing in the last 20+ years.