The reason I ask is because I havent seen barely any chevy trucks that are daily driven that have above 450 hp, why is it so hard to get over 450hp and why is it so costly? I had a supra and spent a little less than $4000.00 and was pushing 450 hp on stock fuel. I look around and see yall with STS turbos and magna chargers with around 330-480 (that I can remember). Thanks for your help.

 

I think the weak drivetrain accounts for some of it, relatively high compression (unfavorable to boost) accounts for some more. The fact that our vehicles were not made for boost is a factor. If you look at GM cars/trucks that were made for boost (Grand National, Syclone, and Typhoon), you'd see that it's a relatively simple matter to upgrade the turbo and a few other components to really get it up there power-wise. Was your Supra already a turbo?

I'm interested in hearing what others have to say in response to your question.

 

Yes it was, and I realise that our trucks werent made specifically for turbo/supercharging like the GN's, supras etc. But if i was to drop the CR to 8:5 like most other turbo cars and run 14 Psi would it make respective HP?

 

It's totally doable..

My truck had to have been well over 450rwhp to run the MPH it did (calcs say 550rwhp but doesn't factor in frontal area, coefficient drag or 4wd)). It is/was my daily driver too. I commute 150miles per day with it. The only problem I had at the time was some water suckage which harmed the motor and the trans started to put up a fuss. The motor seemed unharmed by the power level.

It just takes some good parts, good fuel and proper tuning.

I'm pretty sure that on my street setup at 13psi I was very close to 500rwhp is not more because my first 2 runs at the track before turning up the boost were 108-109mph. I turned up the boost, trans slipped off the line and then banged the rev limiter hard 2nd-3rd gear and I popped off a 110mph trap with only 1.5psi more.

My setup was a stock 5.3L with a turbo cam, stock 6.0L heads to drop CR to 8.6:1, FMIC and methanol injection because California gas SUCKS! LOL The rest of the crap is in my sig.

 

that supra might have 450hp but i bet the torque is not even close to mine or any 450hp silverado

 

I'm working on the 500rwhp,as soon as I work out a fueling issue I be posting new numbers.Exceeding 500rwhp will be no problem.And it used to be a 5.3.

 

I'm thinking that you run into trouble exceeding 500rwhp with any truck package. Based on this I'm stopping at 470 gms/s from the MAF. I want to be able to drive my truck anywhere without worry. I think the transmission is the weakest link.

 

That's my goal. It is completely doable, but good luck on the stock trans.

 

Cory had a slightly Modified Stock version of the 4L65E

BUT its a 'Secret'

 

Who's Cory?