Rear Diff Question/thoughts
Rear Diff Question/thoughts
So.....I love the fact I have a 300 HP RWD vehicle but am not to keen that it's not posi. Been looking around at replacement rear ends and they are of course a lot of money. Upon doing some research it looks like certain SC300/400 rear ends might work but I don't know if they are posi. My question is: will a Supra rear gear set fit into the GS housing? Or will the whole rear diff pumpkin bolt in? I'm going to my friends house tonight that have a 1994 Supra and will be checking it out, should be interesting. Anyway, your thoughts and input would be cool. 
They made different rear end for the auto because the auto tranny came with 4spd where as the NA manual was 5spd. Totally different gearing.
The 5spd came with a 4.08:1 diff. Unless the original poster wants to rev high at all times, a 3.76 would be a better setup. Our OEM diff is 3.26.
The 5spd came with a 4.08:1 diff. Unless the original poster wants to rev high at all times, a 3.76 would be a better setup. Our OEM diff is 3.26.
Lexus Champion
Joined: Feb 2002
Posts: 4,466
Likes: 13
From: Cali
They made different rear end for the auto because the auto tranny came with 4spd where as the NA manual was 5spd. Totally different gearing.
The 5spd came with a 4.08:1 diff. Unless the original poster wants to rev high at all times, a 3.76 would be a better setup. Our OEM diff is 3.26.
The 5spd came with a 4.08:1 diff. Unless the original poster wants to rev high at all times, a 3.76 would be a better setup. Our OEM diff is 3.26.
Learn something new every day!
BTW, I have a 5-speed Supra diff on the way...
The car isn't driven on the freeway much, so not a big deal.
Should be a screamer light-to-light!
Last edited by SoCalSC4; Dec 8, 2007 at 01:12 PM.
Trending Topics
IF you want to keep the OEM gearing and gain LSD, why not take a look at the TRD clutch-type LSD unit? It cost a few hundred bucks less than a 3.76 Supra diff, but you'll have to open up your housing to install it.
I'm a fan of clutch-type LSD over torsen anyways. Your preference might differ though
I'm a fan of clutch-type LSD over torsen anyways. Your preference might differ though
ClubLexus Stories
Celebrating Lexus & Toyota from Around the Globe
8 Tips for Improving Your Hybrid or Plug-in Hybrid's Efficiency!
Michael S. Palmer
10 Best Lexus Models No One Remembers
Joe Kucinski
TRD Off-Road Premium: Best 2026 4Runner, Except This One Thing
Michael S. Palmer
Top 10 Lexus & Toyotas to Drive Before You Die!
Joe Kucinski
Top 10 Lexus/Toyotas With The LEAST 5-Year Depreciation
Joe Kucinski
Lexus LC500 Convertible Auction: A Preview of Rising Values?
Brett Foote
GX 550 vs TX 550: Best 3-Row Luxury Lexus Family Hauler
Michael S. Palmer
9 Best Lexus Models You Can Buy for Half Price (And 1 You Shouldn't!)
Joe Kucinski
2026 Lexus NX Buyer's Guide: Models, Features, Prices & More!
Brett Foote
Stock gear ratio on 20s is a monster on the highway and saves big on gas.
you can swap the LSD from a supra, you do not have to get the whole diff.
However; unless your doing everything your self (work), I recommend going with TRD. It will be cheaper in the end.
you can swap the LSD from a supra, you do not have to get the whole diff.
However; unless your doing everything your self (work), I recommend going with TRD. It will be cheaper in the end.
Well, I found TRD Supra rear diff out of Japan but they never said what the gear ratio was and probably won't know. I'd prefer to keep it as highwayed as possible since feeding that 4.0 liter is spendy.
Thread
Thread Starter
Forum
Replies
Last Post
Cleanshots
General Classifieds
6
Sep 25, 2009 12:04 PM