Alright guys looks after talking to Idahoblkss I went ahead and purchased a procharger for my 07 classic 4.8. I picked up the charger used and built custom piping and got an upgraded fmic. I ended up with the same fmic as he has on his bad *** ss which is 24x12x4 core. Looks sick in the grill. Piping is 3 inch and runs behind the headlights. Tried keeping it short as possible and used a greddy type r bov. Probably over kill but its all I had. Went ahead and got some pacesetter long tube headers and off roady y pipe also. So its catless and from there its 3 feet of 3 in pipe to a magnaflow muffler. From the muffler back its the stock 2.75-2.8 piping or whatever it is to a nice magnaflow tip. It keeps the sound down for now. Id like to find a way to bolt up a stock dmax 3.5 cbe with the stock quiet muffler for the sleeper approach. Put a 3.4 pulley on it and hoping for 10-11lbs. Truck goes to the dyno tomorrow morning. So curious what you guys think itll do on 91 octane? Truck also has 60lb injectors and will be tuned on efi live on the dyno of course. Im hoping for 400+whp but the tuner thinks itll be 425whp minimum. Id be absolutely pumped with anything over 400whp and 450whp would be sooooo sick. LOL Thanks for lookin and Ill for sure post the results with pics, as well as pics of my truck.

Also I did a baseline on the truck with k&n fipk kit, magnaflow muffler and stock tune. Truck layed down 243whp and around 250ftlbs If I remember right. Cant remember the exact number of trq. But the dyno guy said that was the highest number from a 4.8l he had seen. WE dynoed my fathers 02 4.8 the same exact day. They had the exact same mods but his only made 232whp. His is a 2wd and is going under the knife this week also. Long tubes, texas speed cam/springs, and dyno tune by the end of next week. He is hoping for 300whp. Will post those results also. Thanks for looking and merry xmas.

Wish me luck and hoping for 400whp or bust. LOL

 

Good luck...

 

you need a cam and a fuel pump bad now. stock pump won't give you enough fuel for 400hp. 60lb inj. are good but you got to get the fuel there. watch for pressure drop. you might get mid 300's on the stocker. good luck!!

 

Really thats crazy. My buddy made 398whp on stock pump and and 42lb injectors and fairly low boost, I think 7-8lbs. His was a 5.3 though. Id be happy making that at 10lbs LOL

its on the dyno now Ill post the graph when its in my hand.

 

thats really going to pushing it unless its a flex fuel pump. my 04 cammed 4.8 was losing pressure at 315rwhp. newer pumps may be a little better. let us now how it goes. you should hit 400 if you have the fuel.

 

WEll after 6hrs on the dyno its done for now and check this. True story. 442whp 449ftlbs., "UNCORRECTED" and 473whp corrected. Tranny is stock so we kept it fairly mild. Revving to 6000 plus kept the trq management in place for the shifts. Boost was climbing the whole pull and was making just at 9.5-10psi at 6k. Would probably be 11-12psi if I took it to 6500. Gonna wait till the tranny is done to do that. So supra 300lph fuel pump, fuel pressure gauge, and probably meth injection in the near future. I think 500whp uncorrected is doable on this same setup. Rev to 6500 getting me 11-12psi as well as the cooler air from the meth should make it hold solid. Then add 2-3 degrees of timing from the cooler intake temps that the meth will give me. I think maybe even 525-550whp is possible. All this on 12psi and pump gas lil 4.8 baby

Ill post the graph tomorrow night. To tell you the truth Im extatic. I just wanted 400whp uncorrected, the extra 40 was a hella big bonus. I guess I did my homework . Big thanks to John aka Idahoblackss or something along those lines. LOL

Merry xmas

 

Very impressive! Nice numbers.

 

Good job!!!

 

Nice numbers! Boosted 4.8 ftw!! Is this a D1 pro charger or P1?

 

Its a p1. Came off a guys escalade, and he decided to turbo it so he sold it to me for a steal. Thing runs like a raped ape now. Id like to see how mine stacks up against it. LOL Woudnt that be funny if I pulled him with his old procharger setup. Classic.