Radix or STS for a 408?
08-09-2005 | 09:28 PM
#21
14 Second Truck Club
Joined: Dec 2003
Posts: 1,188
Likes: 1
From: Houma, Louisiana
Originally Posted by unredeemed
They can support up to a 6.0L engine per their website. I don't think that the Radix or MP112 can do any better though as they are pretty compact in size and you would be restricted and out of volumetric efficiency. But to not go larger then 6.0L you maybe fine if not looking to run big boost.
I wish they would publish more specs of their superchargers rather then pretty efficiency graphs.
If there is any supercharger to consider, I think it was mentioned already, a Pro Charger.
I wish they would publish more specs of their superchargers rather then pretty efficiency graphs.
If there is any supercharger to consider, I think it was mentioned already, a Pro Charger.
08-09-2005 | 10:04 PM
#22
There was a vid of an AV with 2 Radix style compressors on it a while ago, I think that's the only way you could really get the full potential out of a supercharged 408, But I woulds also go turbo for the same reasons mentioned above.
if you dont get skeered 
08-09-2005 | 10:52 PM
#24
Baltimore Whore
iTrader: (95)
Joined: Apr 2004
Posts: 16,820
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From: In a van DOWN BY THE RIVER
The radix is a great product that will work with alot of setups and could definetly make 500 rwhp but depending what kind of numbers you want i would go with the sts or another turbo set up or even a stacked twin setup, That will help out wit lag. Don't get me wrong i have read alot of great things on the radix but turbo hp is unlimited depending on the $$ you have to spend.An for a 408 setup i would do the turbo thing. My 02
Last edited by mangledgmc03; 08-09-2005 at 10:58 PM.
08-09-2005 | 10:52 PM
#25
Hey I'm a Procharger man myself. Slap youa D-1SC Procharger and you will get a lot of H.P. out of that 408. But between the radix / or turbo.... I go with the Turbo hands down. You will have a lot more options to choose from with that setup.
08-09-2005 | 11:02 PM
#26
TECH Resident
Joined: Nov 2001
Posts: 880
Likes: 1
From: Twin Cities
I've had a big cube motor with the Radix. It's a nice combo, don't believe all the BS from the keyboard jockeys. It will build more than 8lbs of boost with a 3" pulley.
What you'll get with the Radix is gobs of TQ and great throttle response. If you pick the right cam (valve event timing is very important) for this setup you'll have a better daily driver than if you go turbo IMHO.
I went from the Radix to a GT42 with a 84mm exducer. Now my motor makes 500+ NA on the engine dyno and until boost comes in it doesn't come close to the Radix's instant boost. IMHO if I kept the boost @ 8lbs the Radix would win in a drag race or from a roll every time. But my Turbo really makes me smile when you feel 12-18 pounds of boost pushing you foward.
Radix Best all around performer with ease of install and little to no additional maintenance. Works fine in the rain, no oiling issues or things to add. It comes with everything you need to run.
Rear turbo... If you like to tinker a bit and turn up the boost you'll go faster.. Unless you blow some N02 into the Radix.
You can't go wrong with either setup...
What you'll get with the Radix is gobs of TQ and great throttle response. If you pick the right cam (valve event timing is very important) for this setup you'll have a better daily driver than if you go turbo IMHO.
I went from the Radix to a GT42 with a 84mm exducer. Now my motor makes 500+ NA on the engine dyno and until boost comes in it doesn't come close to the Radix's instant boost. IMHO if I kept the boost @ 8lbs the Radix would win in a drag race or from a roll every time. But my Turbo really makes me smile when you feel 12-18 pounds of boost pushing you foward.
Radix Best all around performer with ease of install and little to no additional maintenance. Works fine in the rain, no oiling issues or things to add. It comes with everything you need to run.
Rear turbo... If you like to tinker a bit and turn up the boost you'll go faster.. Unless you blow some N02 into the Radix.
You can't go wrong with either setup...
08-09-2005 | 11:14 PM
#27
Originally Posted by Ripped427
I've had a big cube motor with the Radix. It's a nice combo, don't believe all the BS from the keyboard jockeys. It will build more than 8lbs of boost with a 3" pulley.
What you'll get with the Radix is gobs of TQ and great throttle response. If you pick the right cam (valve event timing is very important) for this setup you'll have a better daily driver than if you go turbo IMHO.
I went from the Radix to a GT42 with a 84mm exducer. Now my motor makes 500+ NA on the engine dyno and until boost comes in it doesn't come close to the Radix's instant boost. IMHO if I kept the boost @ 8lbs the Radix would win in a drag race or from a roll every time. But my Turbo really makes me smile when you feel 12-18 pounds of boost pushing you foward.
Radix Best all around performer with ease of install and little to no additional maintenance. Works fine in the rain, no oiling issues or things to add. It comes with everything you need to run.
Rear turbo... If you like to tinker a bit and turn up the boost you'll go faster.. Unless you blow some N02 into the Radix.
You can't go wrong with either setup...
What you'll get with the Radix is gobs of TQ and great throttle response. If you pick the right cam (valve event timing is very important) for this setup you'll have a better daily driver than if you go turbo IMHO.
I went from the Radix to a GT42 with a 84mm exducer. Now my motor makes 500+ NA on the engine dyno and until boost comes in it doesn't come close to the Radix's instant boost. IMHO if I kept the boost @ 8lbs the Radix would win in a drag race or from a roll every time. But my Turbo really makes me smile when you feel 12-18 pounds of boost pushing you foward.
Radix Best all around performer with ease of install and little to no additional maintenance. Works fine in the rain, no oiling issues or things to add. It comes with everything you need to run.
Rear turbo... If you like to tinker a bit and turn up the boost you'll go faster.. Unless you blow some N02 into the Radix.
You can't go wrong with either setup...
funny how building a combo that works together correctly can work out so well
08-09-2005 | 11:22 PM
#28
14 Second Truck Club
Joined: Dec 2003
Posts: 1,188
Likes: 1
From: Houma, Louisiana
Originally Posted by moregrip
and I thought I was alone......................
funny how building a combo that works together correctly can work out so well
funny how building a combo that works together correctly can work out so well
I figured somebody out there was making power with the big cubes with a Radix. Ripped427 that's what we want to here.
08-09-2005 | 11:56 PM
#29
Originally Posted by Ripped427
a GT42 with a 84mm exducer.
Anyway, what about a nice 3.3L intercooled Whipple.
08-10-2005 | 12:08 AM
#30
TECH Veteran
Joined: Sep 2003
Posts: 4,534
Likes: 3
From: Las Vegas, NV
a radix for your case. solid and reliable. if you aren't out to build a race truck type 408 the radix will feed it just fine. a mild cammed 408 with small port heads and a radix will make for off idle torque that just can't be made with a turbo setup. with the weight of your avalanche and emissions being an issue i'd certainly go with the radix. the radix even works well at the track...