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4:10s or 3:73 ?

This is a discussion on 4:10s or 3:73 ? within the Firebird / WS6 forums, part of the Vehicle Specific category; Looking to change gears in my 2000 m6 and was wondering what ratio to go with.also wondering should i get ...

  1. #1
    Junior Member king245249@bellsouth's Avatar
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    2000 Pontiac TransAm

    4:10s or 3:73 ?

    Looking to change gears in my 2000 m6 and was wondering what ratio to go with.also wondering should i get a tune.i have slp cold air package and no catts with flomaster exhaust.

  2. #2
    Member brendan.9's Avatar
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    Red, Pewter
    03 cobra07 street glide

    4.11s

  3. #3
    Moderator 35th-ANV-SS's Avatar
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    4.10 if you plan on just bolt ons.

    Most will tell you it's not worth investing any money into the 10 bolt and I agree.

  4. #4
    Senior Member 98maro's Avatar
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    00 camaro ss M6 #6695

    I have 3.73s on my 00 ss M6. I feel no difference.
    I would go for 4.10s.
    Like the other member said. If you plan only on bolt ons.
    00 ss blk m6 " STOCK" strano springs, slp bilstein shocks, adj LCA, adj panhard bar, relocation brackets, 2 point SFCs welded,OEM zo6 rims black, magnaflow exhaust, CME exhaust,E/cutout, slp grille, custom front plate mount, HIDs, whistler mod, side moldings delete, slp air lid, ported and polished TB, strut tower brace, 3.73s gears, and some other parts to list!
    next to come,4.10s,ls7 clutch, ms3 or 228r cam, ported 243s, ls6 intake, ls6 oil pump. ls2 timing chain, longtube headers no cats, with a tune..
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    Senior Member raynor139's Avatar
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    2002 Trans Am WS6 M6

    Quote Originally Posted by 35th-ANV-SS View Post
    4.10 if you plan on just bolt ons.

    Most will tell you it's not worth investing any money into the 10 bolt and I agree.
    Agreed I did stuff the cheap way on my previous car. Doing it right the first time this time around. I would love to just throw a set of 4.1s in the rear of my car but much rather save up and do a proper 9" or 12 bolt for peace of mind.

  6. #6
    Electrical Engineer KMdef9's Avatar
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    Custom Swirly Black
    2001 WS6 M6

    I heard from someone who used to frequent this site that with their 4.10's, wish they went 4.30's. But, that wasn't on a stock rear or a stock motor.


    If you plan on putting sticky tires on the back, I really think you'll be wasting money with this investment.

  7. #7
    None Shall Pass Knight's Avatar
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    99 WS.6 - Modified

    Stock 10 bolt - waste of money to change gears, unless the ones you have are trashed and you need to get rolling again. Going to 4.10s will only quicken the death of your diff.
    Upgrading the rear, then go with 4.10/4.11s. You won't regret it.

  8. #8
    Member Ant71130's Avatar
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    Agreed with everyone. Fortunately when I bought the car, it being lowered and having 4.10s came with it. So I'm glad to have them and enjoy them very much. Granted, I only use SR's and can save up for my own 9"/12b. As far as the gear question is concerned, go 4.10s. But, if you wanna save money in the end, upgrade first. Your call.
    2002 Black/Ebony M6 WS6: Lid, Filter, Smooth Bellow, P&P TB (!Bump Stop), Magnaflow Cat-Back (dumped after the axle), 4.10s, Hypertech ME Tune, eibach springs 4/4, LCA relocating brackets, PHB, free mods, 17" TTMs.

  9. #9
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    2002 TA WS6 M6

    I bought a new Moser 12 bolt and went with 4.10's
    It's a helluva lot of fun. DOn't have to use first gear anymore, but when you do you get a nice quick jump from stop lights.
    My dad drove it and said it really woke the car up.

    I think 4.10 are abosultely perfect. I drove 220 miles highway yesterday going 75-80 the whole time with the AC on and got 22.8 MPG.

    75MPH = right at 2k RPM

    The extra puncha nd life is worth the couple mpg loss IMHO.

    Hope this helps
    Dan

  10. #10
    Member Ant71130's Avatar
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    Quote Originally Posted by dgoett View Post
    I bought a new Moser 12 bolt and went with 4.10's
    It's a helluva lot of fun. DOn't have to use first gear anymore, but when you do you get a nice quick jump from stop lights.
    My dad drove it and said it really woke the car up.

    I think 4.10 are abosultely perfect. I drove 220 miles highway yesterday going 75-80 the whole time with the AC on and got 22.8 MPG.

    75MPH = right at 2k RPM

    The extra puncha nd life is worth the couple mpg loss IMHO.

    Hope this helps
    Dan
    Definitely agree. First gear isn't necessary to use, granted I still do. I usually just shift from 1st, to 2nd, to 4th lol. Regardless though, with 4.10s, on a 560mi trip from NY to OH, one of of my tanks of gas I got 27mpg going 75 the whole way. Swear. They're phenominal.

  11. #11
    Yeah baby! Yeah! silverWS6's Avatar
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    Silver 2002 WS.6
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    Get longtubes and then get a tune, and go with 4.10's. I loved mine

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