I have the 620 X-tra Cab, 79', with automatic 3 speed and wish to convert to a 5 speed and have questions aboutt he drive line and which 5 speeds will actually fit.

I have done these conversions on Z cars before and know what is involved as far as parts needed. I just want to know which combination of driveline and 5 speed will work without having to go to a machine shop for lengthening/shortening a driveline.

I have availability to a 80' king cab 2wd for the five speed and all the goodies, but want to know lengths of transmision comparisons and maybe other combinations of years/models that may/will work.

 

Thanks,

Jon Smock, Idaho...

the auto shares the length as the Z and truck long tail trans...
more info:
[quote]L-series transmissions: -------------------------------------------------
F4W63 (1967-1976). Used on the original 510, 521, 610, 620 (through '73 only), 710 (through '76). Identification: Bolt-on bottom plate and visable ribbing over the main gear case. Use threaded shift lever with 2 rubber cone bushings. Variants: 521 used output flange. All others used spline-sleeve. Short tail transmission. NOTE: Transmission also used on J-series and R-series engines with different bell pattern. --------------------------------------------------
F4W63L (1976-mid 80s). Used on Late (78-on) 510s, late 710s ('77). Identification: Bolt on bottom plate but SMOOTH main gear case. Uses same shifter as previous. Short Tail transmission. ----------------------------------------------------
F4W70B (1969-73) 240Z 4-speed. Long tail transmission. ----------------------------------------------------
F4W71B (1974-80s). 260Z, 280Z, 620 pickup from '74-on, 720 pickup to mid-year '83, 810/810 Maxima. Identification: pinned-type shift lever. Rear extension of transmission has bolt-on cover plate. Long Tail transmission. -------------------------------------------------------
FS5W63A (1977-81) '77-79 200SX, '78-81 510. Identification: Dogleg shift pattern. Smooth rear case and NO bottom cover, pinned-type shifter. Short-tail transmission. Note: 5th gear overdrive. VARIANTS: '80-81 510 version was canted for NAPS-Z orientation. --------------------------------------------------------
FS5W60L: '81 510, rare. Also dogleg, more common to 210s with a different bell. Very short (shorter than the short-tail). --------------------------------------------------------
FS5C71A: (1968-70) Identification: Removeable bellhousing. Original production 5-speed, looks like the NISMO competition gearbox (it isn't one though). OD 5th. Used only in very early Z's. VARIANT: It's the roadster 5-speed with a U20/R series bell. --------------------------------------------------------
FS5C71B: 1977-80. 280Z, 280ZX (non-Turbo), 810, 620/720 pickup trucks. Identification: Looks just like the 4-speed longtail except it doesn't have the extension housing cover plate. Has "71B" cast on it. Pin-type shifter. Longtail transmission, externally 100% swappable with the F4W71B. Note: Various gears, but 5th is always overdrive. Note 2: Never used on NAPS-Z. ------------------------------------------------------
FS5W71C (80-still in use) ID: Identical externally to 71B model except has "71C" cast on it. Used in 80-83 280ZX (non turbo), 810 Maxima. Variants: NAPS-Z pattern on 80-83 200SX/81-86 720, 86-89 D21, KA pattern (same as NAPS-Z) on D21, Frontier, Pathfinder, Xterra, very common gearbox. Unfortunately the bell isn't removeable so an entire front housing has to be changed. Later versions and 4X4 versions have different extension housings. Only used on 4-cyl after 1983. -------------------------------------------------
Borg-Warner T5 1982-83 280ZX Turbo. ID: Huge. Shifter assembly bolts into an attachment box (linkage is internal). Output shaft not Datsun-sized. This is the Non-World Class (NWC) BW T-5.

and more:
 
Trucks:
 521 (all) : Short transmission with flanged output
620 (72-73): Short transmission with sleeved output (everything else below has sleeved output)
620 (74-79): Long transmission; 5-speed optional starting in '77 720 (80): Long transmission
720 (81-86) NAPS-Z type long transmission except 83+ 4X4 used a married transfer case.

Cars:
 240Z: Long transission; early 70 models had a dealer-option 5-speed that was very weak.
260Z: Long transmission, 4-speed only
280Z: Long transmission, 5-speed optional starting in '77 280ZX Non-Turbo: Long 5-speed
280ZX Turbo: '82-83 had Borg-Warner T5 which is unlike any other Datsun transmission.
510, 610, 710, 200SX through 1979: Short transmission. Starting in '77 the "dogleg" 5-speed was optional except in the 200SX where it was standard. 200SX (80-83): Long-tail NAPS-Z type 5-speed 510 (80-81): short-type NAPS-Z 4 and 5-speeds, some 5-speeds were doglegs and some were 210 type 5-speeds that were far too weak for the Z20S.
810/810 Maxima (through '84): Long tail transmission. Rumor has it some early (76-79) 810s had the short tranny but all I've seen were long. 5-speeds optional starting '77 and standard by '81.
This was posted by Datsunaholic elsewhere....thanks Doug! [/quote][quote] trans ratios: http://521.no-ip.info/521/index.php?s=7 ... post&id=94[/quote]

Yes, thank you very much, it is exactly the same conversion I did on my 75"280Z when I got rid of the 3 speed automatic.

You guys are better than average!!!!

I changed over from the zcar.com forum to here, I like my 620 bulletside much better!

I can get my hands on a 78 510 with a five speed with less than 100k on the unit for parts. Nothing really wrong with the 510, except sitting forever. I see by the list that it is a short tranny, what would I have to do to make it fit (like driveline extending?)

I am trying to decide between 80' 720 P/U for parts (more expensive) or the 78' 510 (less expensive).

I am also looking to upgrade the engine a little, mostly get rid of the smog piping and go with a weber, what would be a good choice as far as intake/exhaust manifolds, pre-75 1600 to 2000 L engine parts?

i would like to hear an update on this, as i am in the process of doing a 5 speed swap. is there a 4 speed tranny that would work?