Joe, read the original message again. The second gearbox is a "KC" gearbox. If unaltered on the inside, etc., that means it's a GT6 gearbox, and in most cases the ratios simply aren't suitable for the four-cylinder engines. Oh, and then there's the different input shaft, and (if present) different bellhousing/clutch throwout arm/slave cylinder issues, etc., etc., not to mention changing the output flange, etc., etc.
As fare as the differences between 3- and 4-synchro Spitfire gearboxes, yes, the 4-synchro is a bit longer. But in most cases, the Spitfire's sliding spline driveshaft can compensate for the 5/8" difference in length...once that driveshaft's input flange is changed to one that will bolt up to the larger flange on the later gearbox. --Andy Mace In a message dated 12/21/2003 5:15:46 PM Eastern Standard Time, [EMAIL PROTECTED] writes: > Paul, > Yes, you can use the full synchro gearbox but you will have to shorten > the driveshaft (or use one specifically made for that gearbox. When the > synchro for first gear was added, the gearbox was lengthened slightly. > > The ratios are the same except for fitst gear. The early boxes has a > first ratio of 3.75:1 but was changed to 3.5:1 in later full synchro > boxes. > > Regards, > Joe Curry > > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of Paul-Ernest > Levesque > Sent: Sunday, December 21, 2003 2:08 PM > To: [EMAIL PROTECTED] > Subject: Transmission > > Hello > I am restoring a 1970 Spitfire MK 3 and have on hand two trasmissions > the > one on the car now is number FD 00715 non syncro on first gear, and the > other on is KC25819 *** http://www.team.net/the-local *** *** unsubscribe/change address requests to [EMAIL PROTECTED] or try *** http://www.team.net/cgi-bin/majorcool *** http://www.team.net/mailman/listinfo *** Archives at http://www.team.net/archive *** Edit your replies!
