They charge 20 dollars to spec the cam and then take that off of the cam price at purchase. Basically no charge custom cam as long as you buy through them.

 

Sounds like that thing needs some gears to wake it up!

 

as of right now im 32" tires and 4:10 gears. i dont know how much more gear id really wanna go with such a small tire.. ill be screaming down the highway at 10mgp lol.

my dilema is i pull a camper, drag race, and sand drag. runs great on street tires, paddles on the other hand do not spin the way i want... ive been told by a freind that my gm 8.6 can hold 4:88 and that is what he thinks i should do... any input?

 

just recently decided to hold off on the cam for a year and see if pulley and fuel make me happy.. at least for now.lol

thank you tho for the input and help, its very much appreciated.

 

My first question to you is why are your dyno numbers so low? Magnuson made 365 hp on a totally stock 5.3 Colorado with the TVS1900. That's with a stock airbox, stock exhaust manifolds, stock catback, stock transmission/converter. You have headers/exhaust/transmission work done, so I'm really confused.

Did you get it tuned properly? Did you get the full supercharger kit with the new injectors? There must be something missing with your setup. I'm not sure if the high mileage can be the culprit. Maybe your 1 7/8 headers are eating up some of the power since the 5.3 is a smaller engine and many would say that 1 3/4 headers would be sufficient.

The supercharger you have with supporting mods and tuning on your LH8 should be making well over 400hp. Have you replaced the mechanical fan with an electric one yet? That mod alone will l gain you some serious rwhp and a few mpg.

Let me know if the entire supercharger kit was installed with the proper tuning.

 

yes it was installed properly with all the new injectors and proper tune, the numbers read so low because i wanted the real world numbers and dynoed with the 33" offroad mud tires. it still made 419ftlbs wich is approximatly where the hp should be to match let alone using a mustang "heartbreaker" dyno. they usually read significantly lower then dynojet.

 

Thank you for the update. Definitely get the electric fan done if you haven't done so yet. I've read you can gain up to 20 rwhp with that mod. Also 1-2 mpg.

Did you replace the factory airbox? Easy hp gains there, especially if you change to a bigger cone filter.

Other than that it looks like you got things covered.

 

yes the stock box but i run the truck off road and in the dunes a lot so i wanna keep as much sand out as possible. gonna work on a custom intake box.. as well as better intake tube.