Who has dyno #s for 5.3. Please list your mods. Any #s with cam, LT headers, efans, etc.

 

2001 chevy 5.3. stock made 251 rwhp, 285 rwtq. After radix, with no mods except volant, made 370 rwhp, 390 rwtq. gained 120 hp and 100 lbs of torque.

 

why is the tq so low for such high hp ratings considering this is a positive displacement blower?

 

With a radix, typically your hp will come close to matching your tq numbers, but at far different rpm.

 

Did you have to modify the transmission? If not, how is holding up to the increased power levels?

 

the torque is low due to the lower cubic inch of the engine. that's not bad torque for a 325.

 

I had the transgo street shift kit installed with a corvette servo. It shifts fine now. Not sure how long it is going to last from what I have heard. I got the warranty for 2oo bucks more, so trans is covered. I would, at the min, get a shift kit to prolong the trans somewhat. I'll post some 1/4 mile times tonight after I run the truck. Ran 15.71 with intake and hypertech. Curious to see what it will do now with the radix.

 

By some ET calc's mine is supposedly putting down 400-425.

 

Curious to see what improvements will be on you 1/4 mile times.

 

Anybody else with Radix and bolt ons have any dyno #s.