ronhatch Posted August 21, 2014 Report Share Posted August 21, 2014 Hi all, given a choice is it best to install an A type or J type gearbox? Regards Ron Quote Link to post Share on other sites
RogerH Posted August 21, 2014 Report Share Posted August 21, 2014 Hi Ron, the 'A' type overdrive was standard on the 4A and should fit the rear gearbox mounts. The 'J' type will require the rear mount modifying but the OD should be cheaper as there are more of them. Roger Quote Link to post Share on other sites
maldavismaldavis Posted August 21, 2014 Report Share Posted August 21, 2014 the jtype overdrive is less likely to have problems with the solenoid, and I believe is generally stronger unit. Mal Quote Link to post Share on other sites
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