Rear Gear Size Question
06-01-2019, 11:36 AM
#1
Supreme Member
Thread Starter
iTrader: (13)
Join Date: Sep 2005
Location: Bellville,Texas
Posts: 1,245
Likes: 0
Received 26 Likes
on
22 Posts
Car: 1985 Iroc-Z
Engine: 440LSX
Transmission: l460e
Axle/Gears: 3.55 Wavetrac
Rear Gear Size Question
My 1985 Iroc came with a 10- bolt with a 3.42 Gear ratio. Any idea what size the ring and pinion are?’I know there are various ones in this type or rear end. Trying to figure out what size it came with originally.
06-02-2019, 03:10 PM
#3
Supreme Member
iTrader: (1)
Join Date: Sep 2005
Posts: 26,030
Received 1,664 Likes
on
1,262 Posts
Car: Yes
Engine: Usually
Transmission: Sometimes
Axle/Gears: Behind me somewhere
Re: Rear Gear Size Question
That was right about the time they added the extra 1/8" to that model of rear. (went from 7.5" to 7.625")
Parts catalogs might list it either way.
7.75" is different, if you see that in a catalog, though; that's the 9-bolt. I don't think any piece of that fits any 10-bolt, or vice-versa.
Doesn't too much matter though; all the parts stayed the same. All the gears you buy today for that model of axle are the larger size and fit all axles of that model no matter which size was original.
A better way to look at it is, why does it matter. IOW, maybe there's some better way to get at whatever you're ACTUALLY trying to find out. Such as, does this fit that, which one should I buy, etc.
Parts catalogs might list it either way.
7.75" is different, if you see that in a catalog, though; that's the 9-bolt. I don't think any piece of that fits any 10-bolt, or vice-versa.
Doesn't too much matter though; all the parts stayed the same. All the gears you buy today for that model of axle are the larger size and fit all axles of that model no matter which size was original.
A better way to look at it is, why does it matter. IOW, maybe there's some better way to get at whatever you're ACTUALLY trying to find out. Such as, does this fit that, which one should I buy, etc.
06-02-2019, 03:19 PM
#4
Thread
Thread Starter
Forum
Replies
Last Post
Wishmaster's87IROC
Transmissions and Drivetrain
6
01-20-2003 09:34 PM