unknown_host

iTrader: (1)

Currently, with the stock L98 shortblock, Vortec truck heads, Summit Dual Plane, 650 cfm carb, and a Lunati 218/228@.050 hydraulic roller cam, my car runs 13.1 @ 104.9 mph. With a race weight of 3550 pounds, I am pretty sure I am making right around 325-350 horsepower.

I am fairly certain it will break into the high 12's this season, with 98k miles on the clock for the stock shortblock.

My goals for the next rebuild are to run 11.50 in the 1/4 (I don't want a cage n my car), make a lot of torque, and have a fun/unique combo.

Now I am wondering if I could reach my goals with no other changes other than a roots style miniblower (keep same displacement, heads, valvetrain).

I found two different dynos that interest me:
http://www.carcraft.com/featuredvehi...d_350ci_chevy/
The Magnuson blower makes 502 horsepower and 512 ft lbs of torque with Vortec heads and a small flat tappet cam.


http://www.popularhotrodding.com/ima...st_engine.html

The second dyno is a Weiand 142, makes 460 horsepower and 479 ft lbs with cast pistons.



Both of these dynos make huge torque, have low peak power (6000 rpm or less), and seem like they would be a blast on the street.

So my question is, has anyone here attempted this type of setup? Is this doable? Is the Weiand 142 too old to get the job done? Why can't I find a Magnuson dealer?

Thanks in advance!

unknown_host

iTrader: (1)

Bummed that nobody has replied to this thread yet, and also surprised some of these blowers aren't more popular.

So I am pretty well sold on the Magnuson supercharger, Edelbrock makes an "E-force" supercharger which appears to be a Magnuson 122 with the Edelbrock name on it. A non polished version runs in the $2100-$2200 range, so it seems very affordable.

I found another dyno of a Magnuson 122:

http://www.carcraft.com/techarticles...ne_with_625hp/

625 hp and 592 ft lbs from a 5.3 LS motor with cast pistons on 10 PSI. I am really thinking I could build a solid combo around a Magnuson 122, as Edelbrock advertises 500+ hp and 500 ft lbs from 5 psi.

Now I am wondering if the stock L98 shortblock could handle 5 psi with conservative timing and good gas. Seems like it would be a good idea to get familiar with the blower, then I could build a shortblock that could handle 7-10 psi down the road.

Thoughts?

Pocket

iTrader: (24)

Magnachargers are all very solid units, but you pay for them

The weiand is a throw back to old technology. Strait uncoated rotors, crappy drive system and non-intercooled inefficient package. Look at the belt wrap on the pulley and see the limit on that blower easily. In the end, it's an inexpensive (by comparison) blower tgat gives a mild motor a decent power boost, but is little more than bragging rights to say a car is blown

Fwiw, the e-force series uses tvs2300 blowers, which are an evolution of the classic roots supercharger. The m122 is an in-between design with a 60* or so twist, where the TVs is 140* or so twist. Each step up increases efficiency and therefor power limit climbs

Gsoleski

Are you able to find the Magnuson or the e-force online?

Drac0nic

Magnuson says they use TVS rotors on their site. That to me makes it the obvious choice if you're looking for performance and even reliability (cooler boost=less preignition risk.) JMO on it.

unknown_host

iTrader: (1)

Jegs and Summit sell the eforce polished versions for about $2500, looks like the non polished is about $2100. Considering I would need a single plane, boost referenced regulator and a blow through carb with a Vortec kit, I honestly think I could do a eforce blower for about $1000 less than a Vortech centrifugal.

Pocket

iTrader: (24)

They use both traditional and twin vorticies (TVS) superchargers. M112, m122 are traditional roots where the metric displacement 1900, 2300 are TVS series

Confuzed1

iTrader: (4)

The MP122 uses semi helix TVS rotors. However, the 122 doesn't have the latest and greatest "generation" rotor design.

Remember, that 500 plus HP and torque that's claimed for the MP122 is flywheel not rear wheel!

As mentioned above, the 122 uses 60 degree semi- helix rotors. Pretty much all of the newer TVS 2300 blowers I know of make quite a bit more power because they have the latest "5th generation" rotor design. And even more, most of those 2300 are in purpose built in kits for newer cars and come with a glycol intercooler.

I'd love to see them make a universal type 2300 TVS with an intercooler for us old school carb guys! I'd be all over it!

I'm actually seriously considering one for my 2011 Challenger 6.4 liter, but the price is uber high at around 7K last I checked...

I'm hoping to harness everything my MP122 has to offer with this:
But we'll see...

unknown_host

iTrader: (1)

Very nice ...