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LS1/LS6 rebuild ballpark...

This is a discussion on LS1/LS6 rebuild ballpark... within the Internal Engine forums, part of the LSx Technical Help Section category; Availability of LS2 or even LS6 block vs LQ4/9. THE LQ wins. As for weight penalty. I can tell you ...

  1. #41
    Spaz is My Mentor SMWS6TA's Avatar
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    LS1/LS6 rebuild ballpark...

    Availability of LS2 or even LS6 block vs LQ4/9. THE LQ wins.

    As for weight penalty. I can tell you mine doesn't even notice it. I have Hotchkiss 1" drop springs and Bilstein shocks. It didn't drop the nose more than a qtr in between my LS1 and the 403 LQ block.
    http://www.ls1.com/forums/f7/my-6-liter-build-174257/

    http://www.ls1.com/forums/f8/my-8-8-rear-build-165553/

    6.0L Block - Forged 403 built, breaking it in , Polluter Stg3 Cam, FAST 102mm Intake, NW102 TB, MSD wires, NGK TR6 plugs, Truck Coil Packs, LS3 Fuel Injectors, CC Pacesetter LT Headers, TS&P ORY, QTP e-Cutout, Magnaflow Muffler, 104mm Air Lid & Line Lock, Catch Can, Stage 2 T56 w/Viper shaft, PRO 5.0 Shifter, Tick MC, SPEC Stg3+ Clutch, QT SFI BH, MWC DSL, UMI: Sway Bars, SFC, PHB, LCA's, LCA Relocation Brackets & TA, Belstein Shocks, Hotchkis Springs (1" Drop), YR1 Snowflake Wheels wrapped in NT555 tires & Custom Fab Ford 8.8 rear w/4.10 Yukon Gears, WSQ Hood, 3"CM Strange Eng Drive Shaft.

    00 FB Vert - Stock

    Horsepower never lies, but is often lied about!

  2. #42
    I like turtles GTP231's Avatar
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    Quote Originally Posted by SMWS6TA View Post
    Availability of LS2 or even LS6 block vs LQ4/9. THE LQ wins.

    As for weight penalty. I can tell you mine doesn't even notice it. I have Hotchkiss 1" drop springs and Bilstein shocks. It didn't drop the nose more than a qtr in between my LS1 and the 403 LQ block.
    He can make those numbers with a stock LS1 block
    Last edited by GTP231; 04-16-2021 at 09:47 AM.
    83 Thunderturd even bigger turd probably LQ4 4L80 swap at some point
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  3. #43
    Senior Member Whamhammer's Avatar
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    Quote Originally Posted by GTP231 View Post
    He can make those numbers with a stock LS1 block

    Yeah, if I can make that power with the LS1/LS6, as long as I dont have a roached bottom end which I shouldn't, I think I will see about rebuilding my block. Should be less confusion. I figure that I will have to buy a new intake and throttle body at that point. I am almost ready to drop it off.

  4. #44
    Senior Member Whamhammer's Avatar
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    '02 Trans Am WS-6, 6M

    I got a hold of the guy who used to run F-Body Central, and he was able to source me a 6.0 G8 GT block, do a full rebuild of the bottom end, use Texas Speed LS6 heads, and a McCloud clutch kit for about the price other shop was quoting to re-use my block. So I pulled the trigger on it. The 6.0 is at the machine shop!

    He is in VA, just shy of the NC border now, it should be a bit of a drive, but he does good work. He is going to re-use my LS6 intake, and not do anything too Gucci.

    I am very excited now!
    SLP Air Lid/Smooth Bellows
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    Factory C5 Z06 17x9.5 wheels w/ 285-40-17 Continental Extreme Contact DW's all the way around.
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    356 rwhp, 360 rwlb/tq

  5. #45
    I like turtles GTP231's Avatar
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    Torquer 2 cam?

  6. #46
    Senior Member Whamhammer's Avatar
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    Quote Originally Posted by GTP231 View Post
    Torquer 2 cam?
    Texas Speed 228R cam

  7. #47
    I like turtles GTP231's Avatar
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    His other favorite cam

  8. #48
    Senior Member Whamhammer's Avatar
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    '02 Trans Am WS-6, 6M

    Quote Originally Posted by GTP231 View Post
    His other favorite cam
    I presume its a good cam, right?

  9. #49
    I like turtles GTP231's Avatar
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    Yeah made around 400 to the tire in the cam only swaps I did back when I worked there. Good street manners. Fun little driver cam

  10. #50
    Senior Member Whamhammer's Avatar
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    Quote Originally Posted by GTP231 View Post
    Yeah made around 400 to the tire in the cam only swaps I did back when I worked there. Good street manners. Fun little driver cam
    Nice. I am hoping for between 425-450 rwhp and a good torque curve

  11. #51
    Spaz is My Mentor SMWS6TA's Avatar
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    LS1/LS6 rebuild ballpark...

    I'm betting you be around 415ish with that cam.

  12. #52
    Senior Member Whamhammer's Avatar
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    Quote Originally Posted by SMWS6TA View Post
    I'm betting you be around 415ish with that cam.
    Even with the 6.0’s bore and Texas Speed 243 heads?

    415 is still about 8.5 lbs per hp, and I probably shouldn’t be crying, but that would make the setup only 60 hp more than my current LS1 with a stock long block.
    Last edited by Whamhammer; 08-31-2021 at 07:00 PM.

  13. #53
    Spaz is My Mentor SMWS6TA's Avatar
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    LS1/LS6 rebuild ballpark...

    If you look at my signature you'll see what I have and it only put out 450 to the rear. As good as 243's are they still don't flow enough when compared to aftermarket heads.

    My cam is 237/242 @112 LSA .650 lift

  14. #54
    I like turtles GTP231's Avatar
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    Quote Originally Posted by Whamhammer View Post
    Even with the 6.0’s bore and Texas Speed 243 heads?

    415 is still about 8.5 lbs per hp, and I probably shouldn’t be crying, but that would make the setup only 60 hp more than my current LS1 with a stock long block.
    LS1s with stock 241s and LS6 intakes would be around 400. 405-410 was the most I ever saw cam only. This was on a Mustang dyno

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