| Author |  Topic  | |
UK_Sub
V4 Guru
United Kingdom
2661 Posts |  Posted - 06 Mar 2026 : 18:03:25  
| 
Came across this smooth case gearbox, which I'm assuming is for an early V4, because of the slave cylinder mounted on it (weren't clutches on the 3-speed 2-stroke boxes cable operated)?
I'm guessing it's not a late 2-stroke 4-speed case, as it didn't have a '4' stamped on it.
I took note of the numbers stamped on the box;
707401 stamped on the gearbox casing and 731522 on the bell housing.
Any ideas? |
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Dynorog
V4 Fanatic
United Kingdom
325 Posts | Posted - 06 Mar 2026 : 21:23:02
| I’ll look it up tomorrow in my 2 stroke parts manual.
Cheers
Dynorog |  |
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Woody
V4 Guru
United Kingdom
2878 Posts | Posted - 08 Mar 2026 : 02:45:45
| Bell housing is two stroke, not V4. Have a smooth case V4 from 1967/8. It has V4 embossed on case.
Is the freewheel selector steel? |
Edited by - Woody on 08 Mar 2026 02:46:34 | |
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Dynorog
V4 Fanatic
United Kingdom
325 Posts | Posted - 08 Mar 2026 : 16:16:16
| The Bell Housing is from a MY66 > 96 Special 2T 4sp box.731552
I can’t find a reference to 707401 in 2 stroke parts book. maybe it’s a later box from a later V4.
Dynorog | |
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Woody
V4 Guru
United Kingdom
2878 Posts | Posted - 08 Mar 2026 : 23:52:26
| | I am wondering if the transmission casing is cast iron. | |
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UK_Sub
V4 Guru
United Kingdom
2661 Posts | Posted - 16 Mar 2026 : 09:44:33
| 
The box is cast iron, apparently standard boxes weren't fitted with cast iron boxes, so perhaps that tallies with the '96 Special 2T 4sp box' that Dynorog identified! |
Edited by - UK_Sub on 16 Mar 2026 09:45:05 | |
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Dynorog
V4 Fanatic
United Kingdom
325 Posts | Posted - 16 Mar 2026 : 20:37:02
| I’ve just checked in the parts book and service manual . 710432 refers to the gearbox end cover only, of a 3-speed box. The end cover of a 4-speed box is 708058.I doesn’t appear that they are interchangeable. It looks like it’s pre 1965 from date of page in manual.
Cheers
Oh and it was originally on a LHD
Dynorog |
Edited by - Dynorog on 16 Mar 2026 20:44:11 | |
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UK_Sub
V4 Guru
United Kingdom
2661 Posts | Posted - 17 Mar 2026 : 09:53:09
| I've heard back from someone who is an expert on Saab gearboxes;
"It's an early longnose 3 speed not a 4 speed, easily identified by having a clutch slave cylinder and one adjuster for the shift fork on the back cover, all earlier
gearboxes had cast iron casings so nothing special there I'm afraid." | |
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Dynorog
V4 Fanatic
United Kingdom
325 Posts | Posted - 17 Mar 2026 : 11:38:19
| So the diff/ bellhousing was originally on a 4 spd box and then the box swapped for a 3spd at some point?
Dynorog | |
|
andydeans3
V4 Guru
United Kingdom
2233 Posts | Posted - 17 Mar 2026 : 16:01:09
| quote:
Originally posted by Dynorog
I’ve just checked in the parts book and service manual . 710432 refers to the gearbox end cover only, of a 3-speed box. The end cover of a 4-speed box is 708058.I doesn’t appear that they are interchangeable. It looks like it’s pre 1965 from date of page in manual.
Cheers
Oh and it was originally on a LHD
Dynorog
Yeah, you can tell it's from a LHD by the fact that it does NOT have the horseshoe shaped "thingy" on the gearchange mechanism, on top of the box.
1978 LHD SAAB 96
1991 Nissan Figaro | |
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| | Topic | |
Gearbox ID?
