torqczar Posted February 28, 2018 Report Share Posted February 28, 2018 Hi, I have question on a B1C trans swap, will '49 non-synchronized angle drain plug trans swap with a '52ish synchronized horizontal drain plug trans? the bolt pattern looks the the same. I looked up input shaft , they look the same ... any thoughts? thanks Quote Link to comment Share on other sites More sharing options...
Dozerman51 Posted February 28, 2018 Report Share Posted February 28, 2018 Yes. The mounting ears should be the same and should bolt right up to the bell housing on your truck. I am going to do the same swap on my military WC-12. Quote Link to comment Share on other sites More sharing options...
55 Fargo Posted February 28, 2018 Report Share Posted February 28, 2018 (edited) 10 hours ago, torqczar said: Hi, I have question on a B1C trans swap, will '49 non-synchronized angle drain plug trans swap with a '52ish synchronized horizontal drain plug trans? the bolt pattern looks the the same. I looked up input shaft , they look the same ... any thoughts? thanks Okay you are replacing an NP 420 with a crash box trans? Should bolt right up.. Why ? On this swap. Okay the the more modern trans is what you want? Edited February 28, 2018 by 55 Fargo Spitfire Quote Link to comment Share on other sites More sharing options...
torqczar Posted March 1, 2018 Author Report Share Posted March 1, 2018 not having to double clutch every gear and get rid of the u joints. I was hoping the sync. trans. would shift easier at least in the top gears.. ok can you tell me what you know about this crash box trans. not afraid to learn. searched forum / no comparison on both trans... am I going from bad to worst? Quote Link to comment Share on other sites More sharing options...
Merle Coggins Posted March 1, 2018 Report Share Posted March 1, 2018 I believe the newer trans should bolt right up, but the u-joint will be different. So you may have to swap the output flange, or have the drive shaft modified. Or, if you can get the differential drive yolk from the same ‘52ish truck then you can use the same, newer style, joints at both ends. The newer style is readily available vs. the previous Cleveland type that are not. Quote Link to comment Share on other sites More sharing options...
55 Fargo Posted March 1, 2018 Report Share Posted March 1, 2018 (edited) 47 minutes ago, torqczar said: not having to double clutch every gear and get rid of the u joints. I was hoping the sync. trans. would shift easier at least in the top gears.. ok can you tell me what you know about this crash box trans. not afraid to learn. searched forum / no comparison on both trans... am I going from bad to worst? Well yes nicer shifting 2nd to 4th. But still a truck style, no banging gears and power shifting.....lol Edited March 1, 2018 by 55 Fargo Spitfire Quote Link to comment Share on other sites More sharing options...
55 Fargo Posted March 1, 2018 Report Share Posted March 1, 2018 http://t137.com/registry/help/transmission.htm Quote Link to comment Share on other sites More sharing options...
torqczar Posted March 1, 2018 Author Report Share Posted March 1, 2018 9 hours ago, Merle Coggins said: I believe the newer trans should bolt right up, but the u-joint will be different. So you may have to swap the output flange, or have the drive shaft modified. Or, if you can get the differential drive yolk from the same ‘52ish truck then you can use the same, newer style, joints at both ends. The newer style is readily available vs. the previous Cleveland type that are not. I have driveshaft and axle from same truck.. those ujoints are overly complicated, happy to see them go.. Quote Link to comment Share on other sites More sharing options...
torqczar Posted March 1, 2018 Author Report Share Posted March 1, 2018 9 hours ago, 55 Fargo Spitfire said: Well yes nicer shifting 2nd to 4th. But still a truck style, no banging gears and power shifting.....lol Awww, I love that stuff Quote Link to comment Share on other sites More sharing options...
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