5.3 on 20psi
 

Playing around tonight, and switched out my hallman MBC for my GrimmSpeed MBC. The hallman must have a light spring in it, because it will only crank to 19psi. It's set at 20 right now, and it's a lot of fun. When my converter locks at 90 it goes into warp speed lol. It sets back hard into the seat.
Last time I went out playing with others, I could only get a ninja 1000 to run me. I was on 15psi and he got me by maybe 2 lengths. I wish I could find the same guy and run him to tonight. It feels like a freaking beast! Too bad tonight is New Year's Eve. Next time out I will be hurting feelings.
Happy New Years to everyone!!

Lets get a vid of that beast!! Happy and safe NYE

I lost my go pro 2 weeks ago "/ so ill have to use my phone but ill have to get some videos soon.

Its nice and cold tonight...good for making power. Too bad my truck isn't done!

Hell yeah. Truck should roll out.

Ya tonight she was very happy! Turned fuel pressure back up to keep the Afr happy. Need a set of new tires.

Details on setup? Is it a stock shortblock or built?

Stock parts short block.
5.3 block, ls1 crank, 08 5.3 rods, 08 5.3 flat top pistons, 317 heads, isky triple 12 cam, dual lunati springs. Ls7 lifters, hardened push rods.
S475 T6 75/83 1.10 A/R
4l80 w/ shift kit and yank 3600 billet multi disk
4.10's tru trac and moser axles
Dual walbro 400's, aeromotive fpr
105# injectors
Nnbs intake
20psi :)

Damn nice. Any dyno #s or track times?

I went 12.4 @ 121 with a 2.2 60' I was leaving easy and it still spun after I got rolling.
I was on my worn out drag radials.
This was on 16psi and it feels likea beast on 20psi so new track times will come soon hopefully