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Boosted Performance
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  1. #1
    Member bluevert89's Avatar
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    Default 2.95 first gear vs. 3.35?

    I was wondering what would be a better option for a street car and civility at stop lights and cruising....the heavy duty frpp t5 with 2.95 first gear or a rebuilt unit with a super alloy 3.35, the car has 3.73 gears and I've heard the 2.95 first gear is a nightmare with a 3.73 rear gear! This car won't see 350hp max! No slicks or strip duty. I really liked the gear spacing with my stock 3.35 tranny........til it locked up and wouldn't go in 1st gear anymore! Thanks for your time and look forward to doing buisness with you!
    James

  2. #2
    Authorized Vendor SPeace-ATL's Avatar
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    James,

    Can you elaborate on the "nightmare" you are referring to with the 2.95 first gear and the 3.73.
    People I talk with prefer the 2.95 to make up for the 3.73.
    If someone reading this has experience with this issue please feel free to contribute.

    I'm also not sure where the "Super Alloy" term originally came from. I've seen it used when referring to an Astro A5 gear kit, but the 3.35 gear kit only came in two alloys and the stronger alloy was used in all V-8 3.35 T-5's from 1992 on and was referred to as "High-Alloy". The Astro gears are made from 9310 alloy steel.

    The torque capacity of your engine is the first critical factor and may preclude the use of a 3.35 gear set. The High Alloy 3.35 gear kit is only rated at 300 ft/lbs of torque and that is the strongest 3.35 gear kit made.

    Any gear kits stronger than the 3.35 kits will have the 2.95 first gear.
    This includes the T5Z, G-Force , as well as the Astro A-5.
    Last edited by SPeace-ATL; 03-11-2013 at 08:35 PM.
    - Stan -


    Mustang 5-Speed Specialists - Authorized Distributor for Astro Performance products!
    Offering quality rebuilt T-5, T-45, and TR3650 transmissions in Atlanta

  3. #3
    Member bluevert89's Avatar
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    iI have only read that with 3.73 rear gears and a 2.95 that you shift out of first almost immediately. I have no personal experience so I don't know for sure. The car will be a step above stock....p heads and explorer intake, mild cam and exhaust. Its a convertible if the weight matters. I saw (I think) on d&d web site about the "super alloy" 3.35 gearset. If the shifting out of first is all bs, then a 2.95 would be fine with me. I just was trying to avoid any headaches. The stock tranny was grinding in 4th (of all gears!) And suddenly wouldn't go into first at all. Upon teardown, I found the 1-2 slider was burred and stuck. Rather than spend a fortune trying to rebuild myself, I was going to try and find a replacement that would hold up. No track duty or slicks at all. Pure street/highway driving. All beit spirited on occasion.
    James

  4. #4
    Super Moderator NC STANG GUY's Avatar
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    A 2.95 1st gear trans isn't as low geared as a stock 3.35 geared trans. Otherwords you'd shift sooner with a stock t5 than a 2.95 geared one.
    Either way calling it a nightmare is laughable imo.

    Billy

    90 LX coupe 427ci/T-trim@8psi 726rwhp/625rwtq...whats next?
    93 LX calypso hatch....holding down the floor in the garage for 14+ years..
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  5. #5
    Member bluevert89's Avatar
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    That just goes to show how misinformed I was! Lol this is the first v8 powered fox I've had. I didn't have any problems with the stock t5 and the rpm in wich I shifted......that is until it wouldn't shift at all. Goes to show that not all the info you read in some magazine "tech" articles is necesarilly true. I'm still learning.
    James

  6. #6
    Authorized Vendor SPeace-ATL's Avatar
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    You see, that is what I was thinking too but wanted more information before I said it.

    The typical complaint with a gear like the 3.73 rear and a 3.35 first is that first gear is "over" before you get through the intersection. The 2.95 gear set helps with that problem. The issue was simply described reverse from what it is!


    I did read something on the Internet where D&D calls the newer 3.35 gear set "Super Alloy".

    "Every D&D T5 comes with a Super Alloy gearset with a First-gear ratio of 3.35:1. "Super alloy" refers to the fact that the countershaft, or cluster, and Third gear are made of SAE 4615 steel, and Second gear (on the left) is SAE 4620. These stronger alloys have nearly twice the molybdenum of the SAE 8620 steel used in earlier T5s. The cluster wears a black phosphate coating. "

    I know that another transmission provider refers to "Super Alloy" as the 9310 alloy steel used in the Astro A-5 transmissions. Everywhere else I've seen the better alloy referred to, it was called "High Alloy."

    What is funny is the D&D wording implies that their 3.35 gear sets are stronger than anyone else has.
    This is not the case because Ford went with the better (4620) alloy in 1990 with gear set #065 and then in 1992 the gear set #068 is the same thing except it has the phosphate coating to help the gears break in better.


    By the way, I heard that Tremec is discontinuing the replacement gears for the 3.35 T-5 this year. Soon, all that will be available as replacement 3.35 gears will be those imported from Taiwan and India.

    I'm pretty certain that these import gears are NOT made of the 4615 steel, but use the softer 8620 steel.
    This means the torque ratings will go back down for those built with the aftermarket gears to ratings similar to the 85-89 GT. People have been using these less-expensive imported gears for years without realizing they aren't as strong!

    The 1990 and newer 3.35 gear kit is rated at 300 ft/lbs and the 85-89 gear kit is rated at 265 ft/lbs.
    - Stan -


    Mustang 5-Speed Specialists - Authorized Distributor for Astro Performance products!
    Offering quality rebuilt T-5, T-45, and TR3650 transmissions in Atlanta

  7. #7
    Member SVTSkip's Avatar
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    I've run both 2.95 and 3.35 1st gear ratios in Stangs of mine with 3.73 and 4.10 rear gearing. I actually used my first 2.95 Z code T5 in a car with 3.08 gears and couldn't stand it because it was SO much softer off the line ! Once I swapped to 3.73's it got better, but I still preferred the 3.35 feel. Once you go to 4.10 it isn't as much of an issue... My Coupe has a Tremec3550 with a 3.27 1st gear ratio and 4.10's in the back, and my Vert has a 2.60 1st gear ratio T56 with 4.10s in the back... The Vert feels MUCH softer starting off in first gear, but its certainly liveable... With your 3.73's you shouldn't have any trouble with either ratio IMHO !!!
    16 F-150 4x4 CrewCab 5.0 tuned by MPT, S&B CAI, Dynomax
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    ROLL TIDE ROLL !!!

  8. #8
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    i would prefer the 2.95 with a 3.73 gears............. in traffic for sure....

  9. #9
    Member bluevert89's Avatar
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    Well I really appreciate the clarification! Its good to have the correct knowledge. My next question is, how would I go about getting a rebuilt 2.95 greared tranny from you guys being that I have no core and a core is required? Mine is already tore down and in peices.
    James

  10. #10
    Authorized Vendor SPeace-ATL's Avatar
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    I do have a fresh T5Z on the shelf available for immediate shipping.
    Just click the Pro-Force Logo at the bottom of this post and fill out the "Contact Us" page with your contact information.

    We can continue by email or phone. I receive T-5 cores as a pile of parts all the time.
    Maybe it can be maybe partially assembled enough to protect the shafts during shipping.
    - Stan -


    Mustang 5-Speed Specialists - Authorized Distributor for Astro Performance products!
    Offering quality rebuilt T-5, T-45, and TR3650 transmissions in Atlanta

  11. #11
    Member bluevert89's Avatar
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    It could. I think some of the syncros are misplaced and maybe a few bearings. I chunked em and was going to try and rebuild it. I know the 1/2 slider is what was causing it not to go in first. It has burrs on the teeth. It also would grind in 4th gear(of all gears) anytime I got it above 4500rpm. I don't think the fluid had ever been changed until I got it with 94'000 miles. Car still had original plug wires!
    James

  12. #12
    Authorized Vendor SPeace-ATL's Avatar
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    Chunking parts that are bad already isn't going to be a problem.
    - Stan -


    Mustang 5-Speed Specialists - Authorized Distributor for Astro Performance products!
    Offering quality rebuilt T-5, T-45, and TR3650 transmissions in Atlanta

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