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EFV-8 Club Forum / General Ford Discussion / tranny forks

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Posted By Discussion Topic: tranny forks -- page: 1 2     kubes40 04-13-2012 @ 6:40 PM reply profile send p.m. Senior Posts: 3431 Joined: Oct 2009 Alan, I installed a set of '48 gears in to a '34 box about four years ago. It does require special tools to do this which were fairly easy for me to produce. The ONLY problem I encountered was the shift lever needed to be "tweaked" as the throw was a bit longer and the stock lever hit the dash. That modification was straight forward. The fellow I did this for was thrilled with the results. Mike Kubarth ford38v8 04-13-2012 @ 4:21 PM reply profile send p.m. Senior Posts: 2795 Joined: Oct 2009 Mac, I understand that the '39 - '48 gearsets can be installed in pre - '37 cases, but don't know how far back that is true for. As I understand it, the 78 series cases are less likely to crack under extreme load, and it is for that reason that they are preferred. Can you tell me (us) if the '32 - '34 case accepts these gearsets as well as the '35 - '36, and what are the issues besides durability of the box and shift tower detents and fork width? Can the 81A tower be adapted for use on the earlier boxes? Maybe i just answered my own question! Alan fortyfordguy 04-13-2012 @ 3:50 PM reply profile send p.m. Member Posts: 27 Joined: Oct 2009 The replies you've read below are correct...Ford used the 1938 trans gears in a number of 1939 cars and pickup trucks. You would still see the 81A-7222 shifter housing but instead of the 3" wide fork, you would find the smaller '36-38 type fork. Obviously, they used the small fork when matched with the 1937-38 type gears & synchronizer. It was my opinion (but not founded in any factual evidence) that Ford used the earlier gearsets in many early '39 cars and trucks. I suspect the majority were found in Standard car and pickup trucks, whereas the newer gears and synchronizers were installed in the Ford Deluxe and Mercury vehicles. You can certainly upgrade from that '38 gearset to the '39-48 type, but you need the 91A-7230 shift fork which is easily swapped into the shift tower. We reproduced that fork, so it is readily available. Mac VanPelt www.flatheadv8.com This message was edited by fortyfordguy on 4-13-12 @ 3:51 PM kubes40 04-12-2012 @ 5:35 AM reply profile send p.m. Senior Posts: 3431 Joined: Oct 2009 Deluxe wagon, standard coupe. ford38v8 04-11-2012 @ 10:00 PM reply profile send p.m. Senior Posts: 2795 Joined: Oct 2009 Mike, curious... were these both Standard units? That would make more sense, wouldn't it? Alan kubes40 04-11-2012 @ 3:08 PM reply profile send p.m. Senior Posts: 3431 Joined: Oct 2009 Hey Alan, The 39 wagon I restored last year had a number matching transmission. It had the '38 fork & (small synchro) in it. Car was a 54,000 mile vehicle, history known back to 1970ish. I was by all accounts the first guy to take the transmission out. I did a '39 coupe a few years ago that had the same thing. That car was also a very low mileage and unaltered, number matching vehicle. It too had the '38 (small) fork and corresponding small synchro. One thing in common to the aforementioned vehicles is they were both very early production cars. The wagon had numerous '38 items on it. Mike This message was edited by kubes40 on 4-12-12 @ 1:21 PM Hal 04-11-2012 @ 11:16 AM reply profile send p.m. Member Posts: 99 Joined: Oct 2009 Thanks for the input guys. You answered my question, and I appriciated it Hal ford38v8 04-10-2012 @ 6:32 PM reply profile send p.m. Senior Posts: 2795 Joined: Oct 2009 Mike, I've learned to never say never, but I've never heard of a '39 with a '38 synchromesh. Have there been any documented? Alan kubes40 04-10-2012 @ 10:16 AM reply profile send p.m. Senior Posts: 3431 Joined: Oct 2009 Hal, 39 was a transition year for the transmission. Some used the earlier (narrower) fork, some the wider fork. The later transmission used the wider fork (amongst other different parts) than the earlier transmission. Check the Site that Stroker referred you to and you will easily be able to determine just what you have. This message was edited by kubes40 on 4-10-12 @ 10:16 AM Stroker 04-10-2012 @ 9:51 AM reply profile send p.m. Senior Posts: 1460 Joined: Oct 2009 Hal: He may be right. Check out this link for the straight scoop: http://www.vanpeltsales.com/FH_web/flathead_transID_3speed-shifter.htm This message was edited by Stroker on 4-10-12 @ 9:54 AM

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