I saw an article on cams (and maybe heads) for the 3V motor at the grocery store but didn't purchase it. However I noticed that the dyno comparison showed something like a 40 or 50 HP/TQ gain but that was at 6100 rpm. The disturbing spec was a loss of torque until around 4000 rpm.

Is there a mod for these 3V motors that specifically addresses the low-end?

 

the motors are pretty small (cubic inchs) compared to other V8 muscle engines. That was the thing that I noticed when I got it, the lack of low end compared to my old chevy.

Steeper gears will kind of simulate more low end, because you get to your top end quicker.

 

Yep, lower gears are the cure for that. 4.10 with a manual, 3.73 or 3.90 with an auto.

 

A good custom tune like Brenspeed and Bamachip's, sure help as well..

 

I wouldn't say the 'cure'. I put 4.10's in mine (auto) thinking it would be the cure. It helped for sure, but still left me wanting more. The supercharger seems to have been the cure

 

+ 1

 

That's pretty much what I was wondering, is a supercharger the only way to increase HP/TQ down low? Do you think that new FAST intake (if it ever comes out) will help down low?

 

Twin screw!!

 

Gears will DEFINITELY help...I put 3.90s in my manual and its a night and day difference in acceleration through the gears - Plus I still maintain fairly moderate RPMs on the Highway

 

Your torque comes from the displacement and/or amount of air+fuel per combustion... aka... forced induction to introduce the same volume of air per cylinder as a big block will give you the big block "feel"

 

I have to think UDPs and a lightweight driveshaft will help on the low end power to the pavement, however those gains won't compare to FI (small turbo), but neither does the price.

 

Try a 100 shot of N2O.

 

Best results per dollar come from gears and CAI/tune bar none. You can do delete plates, aluminum driveshaft, and UDP's as well to remove even more restrictions from the stock powerplant. Probably all that for less then heads/cams for more power anyway.

If you want to go really big then forced induction is the way to go with these motors.

 

UDPs and driveshaft don't really register on the butt-o-meter and IMHO aren't worth the cost unless you are after that .01 second improvement at the track.

Supercharger is the only way to go. Wish I could afford one.

 

What is the difference between a twin-screw type and a centrifigal type where driveability reliability and low-end results are concerned?

 

Gears, long tubes w/ xpipe, udp's will all help

 

Both are reliable. A twin screw sits right on top of the engine so when you hit the gas, you have instant boost and the torque peak is lower in the rpm range. In other words, the blower is inches away from the combustion chambers. A centrifugal blower is run in front of the engine like an accessary (alternator, a/c compressor,etc.) The air charge has to go through tubing before it gets to the combustion chamber which takes a bit more time. Also the centrifugals make more boost when the rpms' are cranked up due to the design.

My Procharger has great bottom end power and I can't get street traction at all, but not quite as good bottom end power as the twin screws. On the other hand my mid range and top end power is incredible compared to the twin screws. I had a little altercation with a Saleen twin screw stang last weekend. He lost big time because he was revving the hell out of his engine from a 50 mph roll. The Procharger just screamed power. He may have done better by dropping from 5th to 4th gear instead od 3rd gear like we both did.

Bottom line is it's all in what you want. Great low and mid power with respectable top end.....get a twin screw. Great top end and mid power with respectable low end.... get a centrifugal.

I have a centrifugal, but will be giving it to my son next year for his '05 stang while I purchase a Whipple twin screw for my '05. The Procharger has been great, but it was the only system available 2 years ago, so I bought it. My heart's with the Whipples.

 

Haha. Well it doesn't help below 3k rpms. It's kinda nice feeling 450+ ft/lbs instantly.