1973 F100 4x4 NP435-interchange with 2wd NP435
#1
02-04-2014, 03:17 PM
Join Date: Apr 2002
Posts: 589
Likes: 0
Received 0 Likes
on
0 Posts
1973 F100 4x4 NP435-interchange with 2wd NP435
Getting a 73 F100 4x4 that won't go into 2nd(grinding),and I have a good 2wd NP435.
The early 4by F100s with the single speed Dana 21 t-case are an oddball and have the 2wd tailshaft pattern on the trans.Does anyone know off hand if the 2wd output shaft is the same as the output of these particular trucks?
I know on the 77-up,they are not.
If so,maybe I'll do a trans swap,rather than rebuild.
The early 4by F100s with the single speed Dana 21 t-case are an oddball and have the 2wd tailshaft pattern on the trans.Does anyone know off hand if the 2wd output shaft is the same as the output of these particular trucks?
I know on the 77-up,they are not.
If so,maybe I'll do a trans swap,rather than rebuild.
#3
02-04-2014, 09:57 PM
Post Fiend
From: https://www.novak-adapt.com/knowledge/np435.htm
"This transmission is 10.8" long and features an aluminum top cover that is retained by eight bolts. The NP435 case is of cast iron.
The Ford NP435 has a 1-1/16" diameter, ten spline input shaft that has a stick-out of 6-1/2" from the front face of the transmission. The pilot tip of the transmission measures ~17mm. The front bearing retainer flange measures 4.85" and the bearing retainer tube is 1.43" in diameter. The front bolt pattern is the symmetrical Ford "butterfly" pattern; roughly 8-1/2" wide by 6-5/16" tall.
The Dodge NP435 has a 23 spline input shaft with an 8-3/8" stickout. The Dodge NP435 featured two different styles of front input shaft & bearing retainer. The earlier and less common style (from 1962- generally) used a deep ball roller bearing input. These earlier units are not compatible with our conversion assemblies. While ball bearing front versions still persisted in some applications, they were rarer after 1969. The more common and later style featured a tapered roller bearing and cup assembly. These later versions are compatible with all of our adapter assemblies.
The GM / Chevrolet NP435 has a 10 spline input shaft with a 6-1/2". This version was only available with the roller style input bearing instead of the later and more common tapered bearing design. None of the GM NP435's are compatible with our adapter assemblies.
..................
There are two-wheel-drive and four-wheel-drive models; the critical difference being in the bolt pattern of the rear adapter housing or tail housing. Ford 4wd trucks with the remote (commonly termed "divorced") mounted transfer cases actually have the two-wheel-drive bolt pattern on the rear face and the installer should make this distinction when ordering the adapter assembly. Of note, the NP435's as married to the Dana 21 (single-speed transfer case) featured the 2wd pattern."
"This transmission is 10.8" long and features an aluminum top cover that is retained by eight bolts. The NP435 case is of cast iron.
The Ford NP435 has a 1-1/16" diameter, ten spline input shaft that has a stick-out of 6-1/2" from the front face of the transmission. The pilot tip of the transmission measures ~17mm. The front bearing retainer flange measures 4.85" and the bearing retainer tube is 1.43" in diameter. The front bolt pattern is the symmetrical Ford "butterfly" pattern; roughly 8-1/2" wide by 6-5/16" tall.
The Dodge NP435 has a 23 spline input shaft with an 8-3/8" stickout. The Dodge NP435 featured two different styles of front input shaft & bearing retainer. The earlier and less common style (from 1962- generally) used a deep ball roller bearing input. These earlier units are not compatible with our conversion assemblies. While ball bearing front versions still persisted in some applications, they were rarer after 1969. The more common and later style featured a tapered roller bearing and cup assembly. These later versions are compatible with all of our adapter assemblies.
The GM / Chevrolet NP435 has a 10 spline input shaft with a 6-1/2". This version was only available with the roller style input bearing instead of the later and more common tapered bearing design. None of the GM NP435's are compatible with our adapter assemblies.
..................
There are two-wheel-drive and four-wheel-drive models; the critical difference being in the bolt pattern of the rear adapter housing or tail housing. Ford 4wd trucks with the remote (commonly termed "divorced") mounted transfer cases actually have the two-wheel-drive bolt pattern on the rear face and the installer should make this distinction when ordering the adapter assembly. Of note, the NP435's as married to the Dana 21 (single-speed transfer case) featured the 2wd pattern."
Thread
Thread Starter
Forum
Replies
Last Post
Ken2600
Clutch, Transmission, Differential, Axle & Transfer Case
5
06-26-2014 03:45 PM