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Thread: LT1 w/ FLP Stage 4 or 5 4l60e transmission SWAP?

  1. #1
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    LT1 w/ FLP Stage 4 or 5 4l60e transmission SWAP?

    Hey guys later on after graduation im gonna go ahead and swap in a rebuilt LT1 w/ forged rods/pistons hoping to get 9.0 to 9.5:1 compression ratio

    Im gonna put on a single turbo set-up-
    -Large Frame T72 Garrett Turbocharger
    -TiAL 40mm Wastegate
    -Spearco Intercooler 30x12x3
    -Bosch Blow off Valve
    -Vortech FMU
    -MSD High pressure inline pump


    Prolly putting down 15 psi- i hope to make 550whp-

    Transmission-
    FLP Stage 4 4l60e transmission- $2000
    https://www.flp2win.com/store/produc...fea5e8fbcbcb9f


    OR an
    FLP Stage 5 4L65E transmission- $2800
    https://www.flp2win.com/store/produc...fea5e8fbcbcb9f

    NOW I NEED SOME HELP-
    1.)Do you guys think that the STAGE 4 4l60e will hold 550whp for a long time and be reliable?

    2.)Do you guys have a suggestion on a maybe a different turbo?

    3.)Where can i find a GM 12Bolt POSI Rearend?- Like what cars came equid from the factory?>

    4.) Any suggestions?

    http://www.cardomain.com/ride/2237034/4

  2. #2
    Zombie Killer 6SpeedBlazer's Avatar
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    i suggest a ford 8.8 rear end, cheeper adn just as strong

    and good luck with the turbo, im currently building a turbo motor too

  3. #3
    I'm no post whore Ericoo1's Avatar
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    I would be leaning more on trying to get a 4l80e. While the 4l60e will hold the power you have, but for how long. If reliablity is a key issue for you, I'd ditch the thoughts of a 60 all together. While they are good transmission in the stock form, hard shifts destroy them. I've head of guys in the 450-500 hp range breaking their FLP's. The 80 is heavier, robs more power, and get expensive by them time you buy a trans, converter, controller and may not be the direct bolt, but I think in the situation you're planning for yourself, it's the best choice. If you're planning 15 psi right now, that number will slowly climb to 20 once you get it all put together, any one who says they won't is lying to themselves. take nitrous for example, most people start off with a 75-100 shot, 3 months down the road they're looking for 150 pills. It's just the nature of the game...MUST, HAVE, MORE, POWER! Anyhow, I'd looking the 4l80e. If nothing else you'll have the satisfaction of weighing out all your possiblities.

  4. #4
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    Originally posted by Ericoo1
    I would be leaning more on trying to get a 4l80e. While the 4l60e will hold the power you have, but for how long. If reliablity is a key issue for you, I'd ditch the thoughts of a 60 all together. While they are good transmission in the stock form, hard shifts destroy them. I've head of guys in the 450-500 hp range breaking their FLP's. The 80 is heavier, robs more power, and get expensive by them time you buy a trans, converter, controller and may not be the direct bolt, but I think in the situation you're planning for yourself, it's the best choice. If you're planning 15 psi right now, that number will slowly climb to 20 once you get it all put together, any one who says they won't is lying to themselves. take nitrous for example, most people start off with a 75-100 shot, 3 months down the road they're looking for 150 pills. It's just the nature of the game...MUST, HAVE, MORE, POWER! Anyhow, I'd looking the 4l80e. If nothing else you'll have the satisfaction of weighing out all your possiblities.
    yup im thinking about this 4l80e (http://www.high-impact.net/transmiss...adboy4l80e.htm)- ITS fully built to withstand 700ft. lbs and 800hp so it will be fine for what im doing- it also includes a standalone piggyback controller- which is quite cost effective as far as standalones go- They will make a custom harness to fit any application (like an LT1)

    http://www.cardomain.com/ride/2237034/4

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