Droski Posted January 29, 2017 Report Share Posted January 29, 2017 This transmission looks older than that of a 620 like the ad says it is. Can anyone identify this tyranny? Quote Link to comment
datzenmike Posted January 29, 2017 Report Share Posted January 29, 2017 That is an L series F4W63 or F4W63L. Could be from a '68-'73 510 sedan or wagon, '73 620, '74-'77 710, '78-'80 A10. What it's not from, for sure, is a '76 620. From '74 on only the 71B transmission was used. The '73-'76 610 also use a similar but 5.5" longer version. The '70-'72 521 also used one but it had a bolt on output flange in the tail. With a different front case bolt pattern for the J series, it was used in the '66-'69 520/L521. Quote Link to comment
Droski Posted January 30, 2017 Author Report Share Posted January 30, 2017 Thanks for confirming my doubts Mike. I was wondering if the parts inside this transmission would swap with my J series transmission or if the bell housing could be swapped Quote Link to comment
datzenmike Posted January 30, 2017 Report Share Posted January 30, 2017 ALL the gears, bearings, shift rods and forks are in the front case, so it would have to be totally torn down and installed in a J series case. The rear half only has a speedometer drive and a bushing to support the back end of the mainshaft. Probably easier to cut the front parts off and weld together. Quote Link to comment
datsunaholic Posted January 30, 2017 Report Share Posted January 30, 2017 Some '66 J-series trans are extremely different from the 67+ trans, being more similar to the '65 320 trans. But, to be sure, on your J-series trans, does it have a large, square bottom pan? Does the shift linkage look like the one in the picture? If yes, the '68-73 transmissions are the same model and most likely the "guts" could be put in the J-series case. If the bottom is round with no square plate, they're not the same transmission, and don't even have the same input/output splines or gear design, and nothing is interchangeable. I've seen 66s with either type. Quote Link to comment
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