Idk yet, maybe a th400 maybe a 4l80 lol

There isn't a harness to do a 4l80 swap in these newer trucks yet so I'd have to run a separate transmission controller.

Another problem is the highpressure side fueling, there are new injectors/highside pump that is out but they are crazy expensive lol

 

Love this truck, it's extremely impressive!

 

3.5 pulley with what diameter lower? If its OD and its 8.25 you are right on the edge of max blower speed of 64000 depending on shift points. I wonder if you're seeing belt slip.

Just looked back at some pics... I bet your intake is choking it up top a little too.

 

Procharger said we are overspinning the blower by 900rpm lol
Next 2 mods are a Holley hi ram intake, and having 2" headers/4" exhaust made. I want to do an f series but there is no 8 rib option for these newer trucks, so I'm planning on adding nitrous after I get the motor done

 

Guy over on gm-trucks stated he just ordered IW 8-rib for his 6.2L

CPR has a low side kit that will help feed the LT4 high side, just south of $2k.

 

I have the cpr lowside, and my highside is already maxed out because I'm on e85 that's why we had to add meth! I'm going tovlook into that 8 rib kit right now thanks!

 

The Lingenfelter pump is $1495 and the friggin injectors are $495ea. ****** crazy *** money there!

RT

 

Similar to your setup but an Xcab 5.3.
D1 stock pulley making 12psi at 6900rpm. Has a very small cam with a lil port work on the stock heads and a meth kit and nitrous kit. Stock muffler with headers. Stock stall stock trans stock gear stock height .
We just dynoed 688hp on the 50 shot on 93 octane pump gas.
1st time out was today at the track 11.58@118mph with a 1.83 60ft NO Nitrous! But on the nitrous tune with 3* of timing pulled .

How far do you plan to push yours ?
Has anybody made over 800 with a new 5.3 ? Only seen a handful make high hp so far

 

So you have the LT4 pump and injectors also?

RT

 

Nope sir