Hi all. I've had this diff sitting in the shed forever. It's 3.9 ratio with Holden stamped all over it. It doesn't have the usual yoke you'd expect to find on a torry diff, however I'm thinking it could be a 4cyl torry diff maybe?? What are your thoughts?
Check out this link: http://antswebpage.spaces.live.com/photos/...FDC072!252/
The crown wheel has a number stamped on it: 7407396. The crown wheel and pinion also have matching numbers: 78455.
Cheers,
Ant
Help identifying diff
Started by
_Ants308_
, Dec 12 2007 12:39 PM
4 replies to this topic
#2
_CraigA_
_CraigA_
-
- Guests
Posted 12 December 2007 - 12:49 PM
From the picture it looks like early Holden, which use a different univeral joint (no u bolts). Ratio is also correct for an early model.
Possibly useful to someone who wants to do 0-100 in 1.325 seconds, or to an early Holden restorer. If you want to sell it then its not worth a whole lot - less than $100.00??
Cheers,
Craig.
Possibly useful to someone who wants to do 0-100 in 1.325 seconds, or to an early Holden restorer. If you want to sell it then its not worth a whole lot - less than $100.00??
Cheers,
Craig.
#3
_threeblindmice_
_threeblindmice_
-
- Guests
Posted 12 December 2007 - 02:06 PM
Agree,they will bolt into most red motor Holdens all you need is to replace the universal with an early one ,(but there is two sizes) . commonly used in the 70's if you only had a three speed box.and didn't live in the country.really gives top gear a lift.
#4
Dr Terry
-
- Moderators
-
- 3,327 posts
Technical + Numbers Guru + Moderator
- Location:Eastwood (Sydney) NSW
- Joined: 13-November 05
Posted 12 December 2007 - 03:26 PM
Hi Ant.
Yes, it does sound like a Grey motor diff (FX to EJ), but is the crown wheel stamped 3.89 or 3.90.
I know this sounds pedantic but the difference is considerable when it comes to the tooth count.
The Grey diffs have a 9 tooth pinion & a 35 tooth crown wheel to give a 3.89 ratio, whereas the EH onwards 3.90 diffs have 10 & 39 teeth.
Dr Terry.
Yes, it does sound like a Grey motor diff (FX to EJ), but is the crown wheel stamped 3.89 or 3.90.
I know this sounds pedantic but the difference is considerable when it comes to the tooth count.
The Grey diffs have a 9 tooth pinion & a 35 tooth crown wheel to give a 3.89 ratio, whereas the EH onwards 3.90 diffs have 10 & 39 teeth.
Dr Terry.
#5
_Ants308_
_Ants308_
-
- Guests
Posted 12 December 2007 - 04:15 PM
Hi Dr T. It doesn't actually have a stamp for the ratio, however it's 9 and 35, so 3.8888... ratio, ie 3.89 ratio. So would this then indicate that this is fact an FX to EJ diff? It's going on ebay. What do you think it's worth??
Ant
Ant
Edited by Ants308, 12 December 2007 - 04:18 PM.
1 user(s) are reading this topic
0 members, 1 guests, 0 anonymous users
