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Thread: 4.10/4.30/4.56 Which route to go?

  1. #16
    Join Date
    Aug 2003
    Location
    Caledon East, Ontario
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    66
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    654
    Thanks for the post, ultravorx. At this point I'm more inclined to try mechanical mods. And thanks Billy for the perspective. With a car like this, I can't start worrying about mileage.

  2. #17
    Join Date
    Jun 2003
    Location
    Connecticut
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    62
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    6,837
    Quote Originally Posted by CRUZTAKER
    you will notice a big difference with just a tap of the accelerator after the change. If I had to do it again, I would have done 4:30's.
    Hmmmm, I'm a bit surprised to hear anyone say this from merely a gear change to 4.10's. But I guess it's how you look at it, and what your expectations are. When it comes to High performance, i guess I'm one of those who just can't get enough.

  3. #18
    Join Date
    Feb 2004
    Location
    South Florida
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    9,984
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    I've done the stage 1 chip, Denso plugs and 180 stat with the 410 rear gears. A real big difference from stock. On the high way doing 105 my rpm's are at 3300-3400. with plenty left and the gas mileage isn't bad at all. And with the price of gas going up I wouldn't go any bigger than 410's .

  4. #19
    Join Date
    Apr 2017
    Location
    Baltimore Md
    Age
    40
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    3
    Hello BillyGman, hope all is well. I read your comments on 4.56s i want them for my 03 Marauder, could you tell me what kit you used & the special part needed please. Few questions, will i need to upgrade from stock driveshaft, i have LT headers no cats full stainless exhaust, FloMas40 stock tips, 4.10s & SCT dyno tune, will i need to get the car retuned for 4.56s?

  5. #20
    Join Date
    Jun 2019
    Location
    VA
    Posts
    164
    I'm just here to see if BillyGman ACTUALLY responds...

    And God Bless & Keep Paul Casey...I hope EVERY day is partly cloudy, low humidity and 52 degrees up there Paul...and the 1320' is sticky and the 60's are QUICK!

  6. #21
    Join Date
    Aug 2011
    Location
    Wisconsin
    Posts
    4,338
    Quote Originally Posted by Misduh1sdatpast View Post
    Hello BillyGman, hope all is well. I read your comments on 4.56s i want them for my 03 Marauder, could you tell me what kit you used & the special part needed please. Few questions, will i need to upgrade from stock driveshaft, i have LT headers no cats full stainless exhaust, FloMas40 stock tips, 4.10s & SCT dyno tune, will i need to get the car retuned for 4.56s?
    Thread is from 2004, not sure if you'll get an answer.

    WLB
    BB#1) 1996 ImpalaSS - 16,500 miles - 100% stock
    ______________________________ ___________

    BB#2) 2003 Marauder (300a) - 34k miles - Daily Driver
    #2912 of 7093
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    Delivered 9/19/2002
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    ______________________________ ________________

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    Ed "Baaad GN" Linthicum 8-6-2014

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