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Thread: want 90 rcsb 5.3 swap into the 13's on the cheap any ideas?

  1. #11
    Join Date
    Mar 2003
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    San Marcos Texas
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    600Lbs is alot of weight difference.
    2006 Superior Blue Trailblazer SS AWD, Stock as a rock

    Sold: 2002 GMC Sportside Denali front end with a 2002 LS1, FLT level 5, Yank 2600, Trick Turbo, T76, Nelson intercooler, 60LB injectors, Warbro fuel pump, Eaton locker, Magnaflow, 3.42, Nelson Performance Tuning (speed density).

    Sold: 1981 GMC LB RC 1500 2002 4.8L 4L60E 12 bolt 3.73 Richmond Lock Right AC PS Nelson Performance tuning

  2. #12
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    Nov 2003
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    Denton Texas
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    yeah, 600 lbs is .6 seconds on equally powered vehicles in the 1/4 with all things equal from gearing to shift times and such. The rule of thumb is that you go .1 slower in the 1/4 for every 100 lb of weight your truck carries.
    See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709

  3. #13
    Join Date
    Nov 2007
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    THE MEAN STREETS OF OKLAHOMA
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    11,120
    you fail me yet again starscream, throw some nitrous on there too, cus with heads, 90mm intake, cam, longtubes, stall and tune, oh and gears i run a 13.0-13.1 on motor so better strap the bottle on just a 100 shot would do and youll beat him, remember cars are harder to beat than trucks are man.
    THEY CALL ME G.

    AZRAEL

    2017 RZR 1000 2 SEATER
    2023 RZR 1000 XP 4
    2008 LTZ DURAMAX 3500
    2023 300S 5.7
    2023 BUICK ENCORE[/B]

    The difference between winning and losing, is having a 2nd stage.

  4. #14
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    You don't have to get a true 100% locked differential... a LSD would suit you fine. You are a walking contradiction if you want to keep an true open differential and want to be fast.

    1969 Chevy RCLB C10 350/TH400 SOLD
    2007 Chevy RCSB 4.8 4x4 LS SOLD
    2008 Chevy RCSB 5.3 4x4 LT SOLD
    2010 Chevy CCSB 6.2 4x4 LT SOLD
    2005 GMC CCLB DRW 6.6 Duramax 4x4 191,000 and counting
    2013 FORD CCSB F350 6.7 Powerstroke 4x4


  5. #15
    Join Date
    Mar 2003
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    San Antonio, TX
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    11,038
    I think the point was already made but to repeat!!,, don't do those gears without a posi, it's useless.

  6. #16
    Join Date
    Dec 2010
    Posts
    208
    I think gears and decent traction will beat your buddies skittle. If his best was a 14.1 then I bet he averages 14.2-14.3. I ran a 14.05 @ 94, so you have the trap speed

  7. #17
    Join Date
    Nov 2007
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    THE MEAN STREETS OF OKLAHOMA
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    sorry for some reason i was thinking you said the neon ran a 13.1 not 14.1, cam swap stall and gears and youll get him for sure.
    THEY CALL ME G.

    AZRAEL

    2017 RZR 1000 2 SEATER
    2023 RZR 1000 XP 4
    2008 LTZ DURAMAX 3500
    2023 300S 5.7
    2023 BUICK ENCORE[/B]

    The difference between winning and losing, is having a 2nd stage.

  8. #18
    Join Date
    Mar 2011
    Location
    Grand Rapids Mi
    Posts
    39
    i took the truck to the track last night, 14.3 with the 4.10gear change. Beat my buddies srt4 with stage2 3 out of 5 runs so that kept
    him humble, he said he would have to make a HUGE error to loose to me. If i heated up my tires i could let it idol at the tree and just stomp it and not spin a bit (18psi) my stall sucks like 1200ish and the track was prepped great too. Looking at posi next and then stall 26-2800, dont know much about these its a dd so... Then maybe a cam swap like the nelson one in the homepage writeup (100 horse on a budget? I think). so over all i was disapointed in my times I was hoping for more from the gear swap but I did beat the neon so thats one for the truck for now
    1990 rcsb 5.3 4l60e swap 4.10 gears 3900lbs with a peg leg
    14.3 @ 95 1/4 mile
    9.1 @ 76 1/8 mile
    2.11 60' on street tires open diff

  9. #19
    Join Date
    May 2007
    Location
    Medford, OR
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    142
    Quote Originally Posted by guywith91s10 View Post
    Waiting on a posi not sure what direction I want to go yet, the problem is I drive this in the winter and posi is not great on a icy road. I might get a mini spool and just put it in for track time....
    Im not sure where youre getting this, but in my experience, a truck with a posi with go places a 4X with open diffs wont go. As long as the diff isnt a locker, you should do better in marginal traction situations with a posi. Hopefully youre running winter tires too and you wont have to worry.

  10. #20
    Join Date
    Nov 2003
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    Denton Texas
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    Add a little shot of nitrous on top and off you go. Want to wipe him off the planet, do a front mount.
    See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709

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