Materials to Maintain Your ZHP IIIII Hand Protection IIIII Tools to Maintain Your ZHP
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  1. #1
    Join Date
    Sep 2020
    Location
    Birch Bay WA
    Posts
    36

    Looking for differential feedback

    Just purchased a 2004 330i zhp mt. The car has a 364 differential from an automatic, cold air intake with velocity stack, ss headers and peddle box. The car doesn't feel like what I was hoping for as a daily driver. Thinking of putting the 307 diff back in. Just wondering if you daily drivers are happy with the 307 diff? Thanks

  2. #2
    Join Date
    Jun 2012
    Location
    Socal
    Posts
    1,739
    I answered in your welcome thread. But what are you looking out of the car? Like what's wrong with it that you don't like?

    I think most people are fine with their stock diff. I have a 2.93 and it's fine for daily driving. Doesn't accelerate super fast, but I get great gas mileage. I plan to upgrade to a 3.38 later on. Increase acceleration a bit, but don't sacrifice too much on the top end. Plus with an SC, 3.64 would make my first couple of gears useless lol

  3. #3
    When I had my 3.07 in the ZHP it was nice and relaxed. I never got a chance to install my 3.64 in it, however, I DID install it in the wagon (325i) and it makes driving so much more fun. I wouldn't ever change back to 3.07 unless I was boosted and I needed the longer gears.

    Sent from my Pixel 2 XL using Tapatalk
    -Corey

    2003 Blue ZHP Sedan @ 210k
    Dead due to damaged valve. Parts are being transferred to a wagon:

    2003 325iT Japanrot 6MT @ 230k

  4. #4
    Join Date
    Dec 2019
    Location
    Raleigh, NC
    Posts
    879
    I've used the 2.93 and 3.38 and I would always return to the 3.38 on a 6 speed. I thought it would be annoying on the Interstate but I barely notice a difference. It feels like a much better fit in pretty much every situation than the 2.93.
    330i Base | Mysticblau | Slicktop | 6MT

  5. #5
    Join Date
    Sep 2020
    Location
    Birch Bay WA
    Posts
    36
    Thanks for the feedback, coming from a 99 z3m roadster with the s52 5 speed. Looking for more of a daily driver with a mix of freeway and backroad cruising. The 3.64 seems really jumpy and torqey. Turned off the peddle box and that helps. Feels like they took a 5 speed and put six gears in it with 6th gear being like 5th. Think I've decided to put the 3.07 back in for now. See what that's like.

  6. #6
    Join Date
    Nov 2016
    Location
    Charlotte, NC
    Posts
    3,130
    I'm also like you and felt like even the 3.38 was too much. I definitely liked the torque, though. I settled on converting a 3.23 to work as my happy middle ground, but haven't tested it yet.

    You should definitely try a 3.07 since it's an easy swap (no need to mess with input shafts).

  7. #7
    Join Date
    Nov 2014
    Location
    Portland, OR
    Posts
    10,243
    Interesting...I've had a 3.38 on my list for whenever I get bored with my current setup. Don't make me have second thoughts.

  8. #8
    Join Date
    Dec 2019
    Location
    Raleigh, NC
    Posts
    879
    Quote Originally Posted by BMWCurves View Post
    Interesting...I've had a 3.38 on my list for whenever I get bored with my current setup. Don't make me have second thoughts.
    Don't listen to the talking Pizza, 3.38 is the way!
    330i Base | Mysticblau | Slicktop | 6MT

  9. #9
    Join Date
    Jan 2016
    Location
    Chicago area
    Posts
    1,920
    3.07 is good for a daily driver.

  10. #10
    Join Date
    Oct 2016
    Location
    Vermont
    Posts
    588
    I prefer 3.38 over 3.07 for the torque. The only drawback, for me, is that 1st gear redlines about 55mph. Also, I tested it with a 3.38 open diff, which was a definite (10%) improvement, but I really appreciate the 3.38 with limited slip.
    Last edited by Reasoned1; 09-30-2020 at 01:56 PM.
    2004 BMW 330i ZHP (52k miles), Jet Black with black leather, MFactory LSD (3.38) with Z4 cover, 18"x8.5" ET38 APEX Arc-8's (Anthracite) with 245/40 Michelin PSS', Koni Sports with factory springs and front and rear reinforcement plates, Shark Injector, Corsa TSE3 cat-back exhaust, TMS under-driven pulleys (water & steering), CDV delete, TMS CF strut brace, K&N CAI, GAS DISA rebuild, TMS pedals, Wheelskins steering wheel cover, roller tray center console, black-out grilles, and WeatherTech mats

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