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Thread: 410 gear swap when supercharged

  1. #1
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    410 gear swap when supercharged

    Okay have a few questions to people who've done the 4:10 gear Swap. and to those who haven't that are supercharged. this is only for people who have supercharged cars do you think that it was worth the jump? did you notice a big difference? any regrets?

  2. #2
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    Had the 4.10s installed before the chance for the Trilogy came along. I likely would have left the stock gears in if I'd known. Having said that, I don't regret the 4.10s being there.
    The Blackbird
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  3. #3
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    I think you see more of a difference with a centri then a blower, I did mine before the centri s/c but have no complaints.
    300A Black
    4:10 gears, Flowmaster 44's with rear cat delete, SW headers with 3 inch cats to 2.5 custom h. 3500 stall, Twisted synergy dyno tune, addco f/r , rear control arms, Novi 1200 air to air with the fixings.

  4. #4
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    ill tell you this . from a 20 mph roll with the trilogy and 410 s it will haul the mail .and burn the hoops . imho .

  5. #5
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    4.10 and ported trilogy...tire fryer, have to have throttle management, fun as #$<& on tbe street
    2004 SB Ported Trilogy 48
    Has supporting mods and stuff
    Thanks to Marty O for his help in updating this car.

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  6. #6
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    I preferred the 3.55's after Trilogy and Tune, more street-able with abundance of torque and power to the rear wheels.
    Bill
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  7. #7
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    tire burner vs torque monster with gas milage ?????? what do you say ??

  8. #8
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    All depends on what you are looking for and the torque converter matters as well. I added the Vortec, 4.10s and the 3500 stall all at the same time. It all made a huge difference and I enjoy it a lot but it is a hard charging car off the line. My experience driving and being driven in cars with a trilogy is that I would leave the 3.55s as those blowers work great off the line as is. But if you want even more get up and go the 4.10s are a nice bump.
    Steven

    2004 Marauder Black, loaded
    Vortec S/C
    4.10s
    3500 PI Stall
    Kook's headers
    476.9 rwhp 385 lbs/tq
    KVR's, QA1's, M&Z control arms, rear sway bar
    Lidio tune
    2004 Suburban Dark Charcoal
    1970 W-30 442 convertible twilight Blue

  9. #9
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    dont need a high stall converter with roots blower, power is instant, my converter is like 2600 stall. 4.10, blower, gas mileage? does not compute..19-21 mpg on hwy for me doin 70-75
    Last edited by RubberCtyRauder; 02-21-2018 at 09:35 PM.
    2004 SB Ported Trilogy 48
    Has supporting mods and stuff
    Thanks to Marty O for his help in updating this car.

    R.I.P.
    Rex "SC Cheesehead"

  10. #10
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    Trilogy No. 152
    and 3.55's a perfect match!

    Gotta love it!
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  11. #11
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    410 gear swap when supercharged

    I remember a time not so long ago when “anything over 3.55’s is a waste” was the normal comment..

    So being different I went 4.30’s with the Trilogy AND cranked the wick up to over 19#s! Absolutely LOVED it. So did everyone else who drove it...

    Sure it takes some peddling, but that makes it a fun drivers car!

    Nowadays you probably see more 4.10’s than 3.55’s. Funny how times change.


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  12. #12
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    Ok so it looks like 4:10 it is. I have the Eaton swap! I once drove a Trilogy car it pulled a lot faster off the line then my eaton swap does. and that was with the same 3:55 gears and 10 pounds of boost. Thanks for all the info I think I'm leaning towards the 4:10's

  13. #13
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    Quote Originally Posted by stevengerard View Post
    All depends on what you are looking for and the torque converter matters as well. I added the Vortec, 4.10s and the 3500 stall all at the same time. It all made a huge difference and I enjoy it a lot but it is a hard charging car off the line. My experience driving and being driven in cars with a trilogy is that I would leave the 3.55s as those blowers work great off the line as is. But if you want even more get up and go the 4.10s are a nice bump.
    Ditto same combo. I can get it to hook from a dead stop with good tires.
    The twins2.3 whipple/aluminatorVortech V-2 lots of goodies

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  14. #14
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    Quote Originally Posted by marauderrocks51 View Post
    tire burner vs torque monster with gas milage ?????? what do you say ??
    Trilogy with 4.10s = 24mpg = best of all worlds.

    Having the 4.10s before the Trilogy is how I got there, that being said if I had done the Trilogy 1st I probably wouldn't have done the 4.10s.

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  15. #15
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    Mine got the 4:10 then the eaton. Truthfully the gear change did not give me the bang i was hoping for. If i had the eaton first the gears would never got changed. I have got 26 MPG on trip 65/75MPH.
    better to do a burn-out than fade away

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