I said 203 was gear driven. I got ahead of myself. 75F350 is right 203 is chain driven.
Transfer case question
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Elder User
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Transfer case question
I've got a 77 F150 with a cast iron transfer case in it, I've not done much research into it but I was wondering if this is common.
It would seem to me they are a strong unit.
Any thoughts or experience?
It would seem to me they are a strong unit.
Any thoughts or experience?
Post Fiend
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From: St George, SC I-95
2 transfer cases were available for 77 F150s and both were cast iron and very strong.
Np203 Full time transfer case. Gear driven cast iron case and extremely heavy. Shift pattern should be Low Lock Low N High High Lock
Np205 Part time transfer case and arguably the best transfer case ever made. Its also made of cast iron and is gear driven. Shift pattern is 4 Low N 4 high 2 high.
Np203 Full time transfer case. Gear driven cast iron case and extremely heavy. Shift pattern should be Low Lock Low N High High Lock
Np205 Part time transfer case and arguably the best transfer case ever made. Its also made of cast iron and is gear driven. Shift pattern is 4 Low N 4 high 2 high.
Post Fiend
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Not only was it common but an iron case was the only available case.
Could be a full time Np 203, or a part time Np 205.
The 203 is chain driven, and the 205 is gear driven.
Both iron bodies and both pretty strong.
Could be a full time Np 203, or a part time Np 205.
The 203 is chain driven, and the 205 is gear driven.
Both iron bodies and both pretty strong.
Post Fiend
Joined: Jul 2006
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Originally Posted by wedefyu
Correct me if I'm wrong, NP203 was gear driven to the rear, and Chain driven to the front.
Lubrication is another problem after a part-time conversion since the chain no longer spins, it does not send lube around and the case usually dries out a few bearings.
203's are still a decent case, but not as desireable as the all gear 205.
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Interesting and thanks for the replies. My shift pattern is H4, H2, N, L4 shifting from the seat forward, if I understand correctly 90wt is the prefered lubricant.
Any other thoughts?
Any other thoughts?
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Thanks guys, I've had the truck for only a few years and have not gone through it all yet but it's been a good truck and have used it in the Rocky mountains and down in the desert with no problems even with it's old age.