1964 a745 to 23 spline np435

Engine, transmission, rear-end, driveline, fuel system etc..
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druid318
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1964 a745 to 23 spline np435

Post by druid318 »

I'm about to ditch my a745, as the column shift mechanism broke. I believe this truck has the "universal" bellhousing that I'm reading should accept a 435, as well as having extra holes on the engine side for Slant Six or 318. I've got a good deal on a rebuilt 435 lined up but I need to figure out what other parts I need.

The new 435 is 23 spline, and from what I have read I think all the a745 are 10 spline. Can anyone lay out the parts I will need. I think I need a 23 spline clutch, but I have no idea what size or how to check that. Do I need other parts, throw out bearings etc? I know almost nothing about transmissions. I've never even swapped a clutch.

I'm guessing I'll need my intermediate driveshaft adjusted as well. I've got a divorced np201 with what feels like a 16 spline shaft between the two. It's cold outside though so I may have mis-counted them laying in the snow.

Any help is greatly appreciated. This truck is my daily driver, so having it down for something silly like a broken shifter is killing me.
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powerwagon54
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Re: 1964 a745 to 23 spline np435

Post by powerwagon54 »

pm sent

712edf
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Re: 1964 a745 to 23 spline np435

Post by 712edf »

68 & earlier NP435's had 10 spline inputs. The 23 spline you have is 69-later. I think there may be a difference in input shaft length.

Bucky
1966 W500
1975 W600
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druid318
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Re: 1964 a745 to 23 spline np435

Post by druid318 »

Well, powerwagon54 called and got me set straight. Saved me the cost of a 23 spline transmission and shipping. I think I will likely be ordering a correct 10 spline unit from him shortly.

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Txas2step
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Re: 1964 a745 to 23 spline np435

Post by Txas2step »

Bud to the rescue again! Who is that masked man? :lol: :Thumbsup
61 shorty 170/ 3spd 3:91(sold)
66 lwb 318 poly/727/4:10 (sold)
67 shorty 318poly/4spd 3:55
68 ute 318/3 spd/3:55(sold)
70 318/727/3:23
66 d200 225/4spd/4:10( military)(sold)
68 d100 383/727/3:55

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