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4L65E making it stronger

This is a discussion on 4L65E making it stronger within the Automatic Transmission forums, part of the Drivetrain category; Hey guys What do i need to do on a 4L65E(2003 Silverado SS) so i could handle well about 600 ...

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    Junior Member askkmb's Avatar
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    4L65E making it stronger

    Hey guys
    What do i need to do on a 4L65E(2003 Silverado SS) so i could handle well about 600 hp?? Any ideas?? Im planning on a 600 hp engine in that truck but i figured out that the stock tranny maybe woulnt handle so much horses. What do you guys think???

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    Junior Member askkmb's Avatar
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    Anyone??? Please.

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    Now in Summit LT1 Flavor! Y2KArcticSS's Avatar
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    I would assume you would need to beef up the internals. I'm sure they have a rebuild kit spec'd for that kind of power. Definitely need a better torque converter.

    Aaand that's about all I got. I'm more of a manual transmission guy so my knowledge is limited. Free bump though lol

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    Junior Member askkmb's Avatar
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    Quote Originally Posted by Y2KArcticSS:2782754
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    Thanks, do you know any shop i could buy a good rebuild kit for a good price?? And do you think the stock rear end would handle 600 horses??

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