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Thread: Any Resorces On Building A 650hp Ready 4l65e?

  1. #1
    Join Date
    Apr 2008
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    P'cola Fl
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    Talking Any Resorces On Building A 650hp Ready 4l65e?

    So my 03 sierra is pushing 80k and since i'm planning on a ls6 w vortech swap (hoping for about 650hp to the flywheel after all is said and done). I want to go ahead and build the hell out of but i really want to stick with a stock stall since i still drive it everyday and tow often. Any links or advice would be great, thank you in advance you guys always come through with great advice and help once again thank you!

  2. #2
    Join Date
    Apr 2005
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    4,229
    FLT Level 5+ is for +/- 550rwhp. That should be = to your flywheel output.
    Gone, but not forgotten!

  3. #3
    Join Date
    Nov 2006
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    also kind of depends on your weight...heavier vehicle makes more stress on the trans...if its a scsb truck then you will have less to worry about...Sprayed99 his dad built my trans and it's held pretty good and i put 540/591 down in a 5,400lb truck
    2006 silverado SS....Clifford Jr...turbo coming soon
    1970 Chevelle ly6 swap....d1 coming soon

  4. #4
    Join Date
    Apr 2005
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    Very true.
    Gone, but not forgotten!

  5. #5
    Quote Originally Posted by SCIV View Post
    FLT Level 5+ is for +/- 550rwhp. That should be = to your flywheel output.

    Finish Line Transmissions | Performance Transmissions | Power Converters | Transmission Parts | Transmission Service

    I would go 4l80 that way you don't have to worry about it at all when you decide that you need at least 800rwhp.

    Also keep in mind you get what you pay for.
    99RCSB Broke because I wasted thousands and thousands of dollars on my truck.

  6. #6
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  7. #7
    Join Date
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    saratoga springs ,new york {upstate ,adirondacks }
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    do an 80e ,trust me ive done 7 60-65s.
    mods:2004 sierra ext sb,20s ,big brake kit w,hawk pads,air bagged,2006 6.0 lq4 swap,vortec supercharged10psi, air to water intercooled w/ dual electric fans on it ,snow meth injection kit,60lbers, e-fans ,big radiator swap ,cam 218 /222 548/550 comp .hardened prs .1.85 comp roller rockers ,guideplates ,crane double springs,trans 4l65e built .pacesetter l/ts true duals w/x pipe and magnaflows,14 bolt rearend swap ,3.73s,aroemotive fuel pump system w/elec.fuel controller and bypass regulator a/n fittings, taylor 10.5s interceptor gauge,aem w/b a/f ,autometer boost/vac NELSON 93 OCTANE TUNED .

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