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my 4.8 going 10.05 @ 137

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Old May 1, 2015 | 11:33 PM
  #31  
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According to Wallace racing calculator, 137 mph at a weight of 4300 lbs is 885 rwhp.
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Old May 2, 2015 | 01:23 AM
  #32  
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That's a super fast 4.8!!! Congrats Mario! Makes me wanna go invest in a rcsb truck!
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Old May 2, 2015 | 02:18 AM
  #33  
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Originally Posted by GMCtrk
According to Wallace racing calculator, 137 mph at a weight of 4300 lbs is 885 rwhp.
Ok ?? Foose dynoed about 900s ? So wats your point?
Theres another truck here in south texas 4.8 picking up 140 its a friend of mine but cant cut the 60ft ... Also on a bullseye turbo and with an ls9 cam .....he ran the best of a 10.15 .... I dont see it impossible .... Its all about the 60ft ....
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Old May 2, 2015 | 02:19 AM
  #34  
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Originally Posted by JordanH
That's a super fast 4.8!!! Congrats Mario! Makes me wanna go invest in a rcsb truck!
Thanks jordan .... Hopefully i get my turbo this week and motor to hold up going up to 22 psi see if i can go 9.8s i wana see the questions they are going to ask ! Lol
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Old May 2, 2015 | 08:22 AM
  #35  
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how are you getting that great 60' with no t brake or 2 step? i need the secret. what rpm do you leave at?

According to Wallace racing calculator, 137 mph at a weight of 4300 lbs is 885 rwhp.
don't always believe that. i make little over 700rwhp and weigh 4300 (w/ driver), just ran 135mph in 1/4.
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Old May 2, 2015 | 09:06 AM
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Originally Posted by black4.8
how are you getting that great 60' with no t brake or 2 step? i need the secret. what rpm do you leave at?

No tbrake or 2 step , this is on caltracks, i launch at 4psi ...... Like stated i belive the turbo is sonething else


don't always believe that. i make little over 700rwhp and weigh 4300 (w/ driver), just ran 135mph in 1/4.
X2 there it is
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Old May 2, 2015 | 07:22 PM
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Wow That thing is moving ....!!!! Congrats ! 4l80E trans ? whats the gear are you running ?
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Old May 2, 2015 | 09:23 PM
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Originally Posted by Shifty1
Wow That thing is moving ....!!!! Congrats ! 4l80E trans ? whats the gear are you running ?
Thanks ..... Yes 4l80 , manual tran. Im using 4.30 gears ... But shifting pretty firm and low .....
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Old May 2, 2015 | 09:41 PM
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Originally Posted by la del 11
Thanks ..... Yes 4l80 , manual tran. Im using 4.30 gears ... But shifting pretty firm and low .....
4.30's ? You must be from the Houston area
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Old May 2, 2015 | 09:43 PM
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Originally Posted by Shifty1
4.30's ? You must be from the Houston area
Lol ..... South texas ! Lol ... I had 3.90s but decided to rev the engine a lil more up top
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