I need flow numbers for stock heads, and stock cam specs. Does anyone know where I can get them or know them off hand?

 

OK ... couple things I figured out.

Using stock cubed 5.3 on 9.0:1 compression gassed motor.
Cam - 218/224 .527/.534 114
Head specs from Patriot web site using the Stage2 LS6 heads
Assuming the intake cfm becomes equivalent to the RADIX CFM
Custom Roots blower with 98% intercooler eff and 98% blower eff with a max of 9 psi.

Basically a stock 5.3 with Patriot Stage2 LS6 heads and the mentioned cam I'm coming up with 831hp @ 6500rpm and 740tq @ 2000rpm.

This means with about 7k (including the Radix kit) Desktop Dyno is saying I can put fdown 830hp at the flywheel. Now ... subtract 20% for driveline loss and you come up with an astounding 664. That would be over-spinning the Radix by 2000 rpm.

I think those numbers are extremely optimistic ... what do ya'll think?

 

I thought roots blowers are only good for 70% efficiency or something like that.

Also, that blower isn't good for much over 500rwhp.

 

You know where I can get a copy of Desktop dyno?

 

yes most superchargers will never see 75% efficiency. I think turbos are somewhere around that 75-80% number. Also, a really good intercooler setup will only see 85% effieciency (unless sprayed with a compressed gas or the use of ice).

 

Changing those numbers didn't change much. It dropped down to 790 peak hp. That's still way up there I think.

 

either buy it from them, or, get it off kazaa. did i say that?

 

*cough* kazaa *cough cough*

Sorry ... getting that little post nasal drip goin on, but yea ... you should buy it from them. If you give me a little while I will try and look up there website.

 

www.motionsoftware.com

 

It seems a bit optomistic when I use it for playing around too, but it is a good guage of what trends to expect.
IMO