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Thread: What about 4.56's

  1. #1
    Join Date
    Aug 2006
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    LAKECHARLES, Louisiana
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    I am running 22s on some pretty beefy tires in the back. I just had 4.10s installed a couple of months ago and thinking of steping up. What are the pros and cons of stepping up to 4.56 ratio? In my mind that is what I should have done in the first place with the bigger wheels. Opinions please!
    2000 Chevrolet Silverado, 4.8L, K&N polished intake, 4.10 gears, 20x9 KMC SS on front, 22x10 on rear, Dual style pillar gauges, steel cowl hood, 2" rear drop shackles, true duals w/IMCO extreme mufflers w/dumps at rear end, SLP headers. Cam and nelson tune soon to come!!!!!

  2. #2
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    Nov 2003
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    Denton Texas
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    I say go for it. You need the muscle for the 22s. The engine RPM will be a little higher but not too much. I sure hope you have bigger brakes for the bigger shoes.
    See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709

  3. #3
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    Aug 2006
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    LAKECHARLES, Louisiana
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    <div class='quotetop'>QUOTE(RedHeartbeat &#064; Feb 3 2007, 01&#58;27 AM) [snapback]82071[/snapback]</div>
    I say go for it. You need the muscle for the 22s. The engine RPM will be a little higher but not too much. I sure hope you have bigger brakes for the bigger shoes.
    [/b]
    I will eventually upgrade the brakes. Heck I&#39;m gonna gear swap. My 4.8 needs all the help on low end anyway. Thanks again red.
    2000 Chevrolet Silverado, 4.8L, K&N polished intake, 4.10 gears, 20x9 KMC SS on front, 22x10 on rear, Dual style pillar gauges, steel cowl hood, 2" rear drop shackles, true duals w/IMCO extreme mufflers w/dumps at rear end, SLP headers. Cam and nelson tune soon to come!!!!!

  4. #4
    Join Date
    Nov 2003
    Location
    Denton Texas
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    I should have gone 4.56s also but opted for the 4.10s. My tires are smaller diameter though.
    See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709

  5. #5
    Join Date
    Aug 2006
    Location
    LAKECHARLES, Louisiana
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    276
    The 4.56&#39;s should snap some neck bones.LOL I can&#39;t wait&#33; I already had liked the jump to 4.10&#39;s. Men and there toys&#33;&#33;&#33;&#33;

    2000 Chevrolet Silverado, 4.8L, K&N polished intake, 4.10 gears, 20x9 KMC SS on front, 22x10 on rear, Dual style pillar gauges, steel cowl hood, 2" rear drop shackles, true duals w/IMCO extreme mufflers w/dumps at rear end, SLP headers. Cam and nelson tune soon to come!!!!!

  6. #6
    Join Date
    Aug 2005
    Location
    Spring, Texas
    Posts
    527
    I bought Richmond 4.56&#39;s and they will be installed in the next couple of weeks. I also have 22" wheels with 305/40/22 Toyos that are about 31" tall, so the gear will not feel like a true 4.56 it will probably feel more like a 4.10.

    I&#39;ll llet you know how they feel when they get installed.

    Later
    06 TrailBlazer SS LS2 4.10's

    02 SC StepSide Factory Orange
    Full Bolt-On 370 - Little Cam- Victor Jr Intake -Worked 5.3 Heads - 4.56's - Built 60E - Circle D 4000

    07 CTS-V CAI, GM Performance Exhaust, Ported TB, Coil Overs

  7. #7
    Join Date
    Sep 2004
    Location
    Breaux Bridge, LA
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    667
    have you thought of a higher stall converter than 4.56&#39;s?
    i&#39;d say that would be the way to go.

    11' Sierra 6.2 NHT
    14.46@91 Stock
    89' Mustang LSX
    10.35@130 pump gas LQ4

    Knothead Racing

  8. #8
    Join Date
    Apr 2006
    Posts
    51
    With the 22&#39;s and larger then stock tires on a 4.8, I don&#39;t think 4.56&#39;s would be bad at all. I&#39;m sure you&#39;ll notice it some on the highway, but it&#39;ll be a lot more fun around town.

    So, you think my 4.88&#39;s will be overkill on the 33" tires? It&#39;ll be fun for a while, but the gearing will be a little more correct when I get the 37" tires on.
    '99 GMC RCSB
    3" Body lift, 4" Rancho lift, Fox shocks
    36" BFG All-terrains
    LQ9 6.0L swap, gt2-3 cam, longtubes, LS1 fans, Nelson Performance tune
    4.8 gears/Eaton posi
    Built 4l65e
    Custom paint, roll pan, filled tail lights, relocated tail gate handle

    Future mods:
    Boost!!

  9. #9
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    <div class='quotetop'>QUOTE(bulldog5.3 &#064; Feb 3 2007, 03&#58;18 PM) [snapback]82130[/snapback]</div>
    I bought Richmond 4.56&#39;s and they will be installed in the next couple of weeks. I also have 22" wheels with 305/40/22 Toyos that are about 31" tall, so the gear will not feel like a true 4.56 it will probably feel more like a 4.10.

    I&#39;ll llet you know how they feel when they get installed.

    Later
    [/b]
    Yea let me know. I am running the same tire size. Thanks

    <div class='quotetop'>QUOTE(tenshikurai &#064; Feb 3 2007, 09&#58;18 PM) [snapback]82175[/snapback]</div>
    With the 22&#39;s and larger then stock tires on a 4.8, I don&#39;t think 4.56&#39;s would be bad at all. I&#39;m sure you&#39;ll notice it some on the highway, but it&#39;ll be a lot more fun around town.

    So, you think my 4.88&#39;s will be overkill on the 33" tires? It&#39;ll be fun for a while, but the gearing will be a little more correct when I get the 37" tires on.
    [/b]
    They should be awesome out the hole. Not really sure on top end. When you get em let me know how they act.
    2000 Chevrolet Silverado, 4.8L, K&N polished intake, 4.10 gears, 20x9 KMC SS on front, 22x10 on rear, Dual style pillar gauges, steel cowl hood, 2" rear drop shackles, true duals w/IMCO extreme mufflers w/dumps at rear end, SLP headers. Cam and nelson tune soon to come!!!!!

  10. #10
    Join Date
    Sep 2005
    Location
    Ft. Worth, Tx
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    114
    Only problem is the 4.56&#39;s are weaker. Some guys have had problems with the 4.56 breaking in high hp applications. It depends on the power level you plan on getting to and how you drive it. street / track? I am running 285/55/20 that are 32" tall. I have 4.10 with an 80E and they are great.
    90 GMC RCSB Forged 370 and Built 4L80E from the VHO going in slowly but surely

    89 fox body notch... No motor or tranny mod but a narrowed 9" w/ 35 spline axles and a spool!!

    2011 Tundra CM 4x4...

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