I don't get it? A roots produces an even more linear powerband than a centrifiugal?

 

NO.

Nothing linear about a Maggie curve.

 

I've heard of some Vette drivers running ~600 rwhp maxing the Maggie out. I don't see why the Maggie would be unreliable... I've never read a post about a Mag belt slipping yet I've read some about Prochargers/Vortechs doing so. Blower cam would be great, good flowing heads, etc. should get pretty high up there WITH, best of all, A ROOTS BLOWER CURVE... Awesome for the street, you know, to play around and have fun with the throttle passing cars while keeping the rev's down... Instant boost... Like having two small quick spooling turbo's.

Any Mag's here had any problems? Other than people being pissed it's not big enough to go past ~600 rwhp?

 

The best way I can describe the feeling of a Magna is having a big stroker engine. Something like a 455ci smallblock. Full boost at low rpm, with a huge torque graph that is nearly flat across. The physical size of the blower limits the max HP though, at around 600 rwhp. That is with a 90mm t-body. The 78mm t-body is the bottleneck on kits with that size t-body, those taper off at 525 rwhp max.

The kit I had on my '69 Camaro was a 78mm setup. Made 505 rwhp, 500 ft-lbs at 9.5 psi boost. 232/232/114 cam and ported heads. The t-body was the restriction, and my 9.0:1 CR shortblock was too low of compression for the Magna (engine was built originally for turbos). With a 90mm t-body and 10.0 CR, it would have made 600 rwhp.

The kit on my '05 Corvette has a 90mm t-body. I pulled 550 rwhp, 520 ft-lbs with the exact same cam I had in the '69, and headers. This is on a stock LS2, unported heads. The amazing part is that it made those numbers at only 5.5 psi boost.

 

mines a blower cam and stock motor...heres my dyno sheet...over 400 tq at 2500 rpm's:
http://www.nelsonperformance.com/dyn...ud8fandyno.jpg

 

just throw some juice on tp of the maggie and you've got 600-700-800rwhp with a sick *** curve

 

I see, thanks for the real life experience. Well my motor is pretty much a stock 2001 motor with ported stock throttle body, 1 3/4 primary headers, 224 .591 112LSA cam, and ARP rod bolts. If I can get close too 500 rwhp then it would be cool, any more I think the lower end would have issues. Thaks for the heads up on the TB may be restrictive.

 

Tony,
I thought you are running a 230/230, 114 cam, right?

 

If you are thinking about getting a Maggy I would wait. Rumor is that they are coming out with 2 new blowers. I believe one is the MP112h whihc is the same size but with different rotors. The other is a MP122h which is suppose to be able to feed a 400+ CID motor. From what I understand it is still in testing phase. We will see.

 

The MP122 is pretty much ready to go. It will be available by itself and it looks like it can be specified when ordering a complete kit. That wouldn't come with tuning and an EO decal.

 

 

ok heres another real world example of a maggy. mine. see sig.
stock tuned 322h/326tq.
475h/465tq @ 7lbs of boost. full torque at 2400rpms.
before buying the maggy system i posted up on the vette forum looking for rides for comparing diff setups. heres a list of the rides that i took with local vette members:
h/c, : 6 diff cars
procharger, : 3 diff cars
vortech, : 2 diff cars
n20, : 7 diff cars.
single turbo: 1
twin turbo : 3 diff cars

the torque right off idle was something that the maggy shined in.
h/c, meh got old real quick in all 6 cars. more of a top end only feel.
procharger, was friggin impressive. but the maggy would take ALL of them from a hook. on the hwy prochargers really shined. STUPID fast. but actually useless in a real world situation. all top end.
vortech. almost the exact same as the procharger, but didnt feel quite at strong at peak rpms.
n20. I LIKE THE HIT!!! normal driving. then wham!! totally fun. but maintenance, empty bottles, and the lack of understanding at the time shyed me away.
single turbo. nice, but seemed like a high maintenance setup. we had to stop 3 diff times in 2hrs. oiling issue, bov wasnt working..etc.
twin turbo.....HOLY F'N ****!!!. nowhere near the feel or pwr down low, but damn. from a 60-100punch...hang on for dear life. 1st and last time i ever saw 195mph, and got there quick from a 100punch. I WANTED THAT SETUP, but after investigating the costs involved i could buy and build 2 complete vettes with maggys and have a decent fund left for tires.

found the best for me, daily driven was the maggy. i have NO maintenance. once installed and tuned. go play. been 17mo and still happy.

down side, IMO. is the fact your are forced into a cowl hood. i dont like cowls.

frustration issue:
got sick and tired of hitting 11.01, .03, .05's in the 1/4.
my 60fts are consistent at 1.5-1.60 with mt et dr's (17in). wanted a 10sec pass so bad...it was soooo close, but jsut couldnt hit it.


installed a small 30h dry shot....and boy oh boy did this change things up.
best to date is in sig, but the last time out 6wks ago in 105* temps and humidity so sticky that you were sweating the entire night just standing there.
still pulled 10.92@125+.
maggy's really like the cold air of a dry shot.

so with the testing, rides in other cars with diff setups. the maggy is a solid choice.
personal opinion is that the vette should have came with one from the factory. good combo.

FWIW

 

maggie, cam and spray are fun.......

if possible I'd get a KB though.

I've had mine 2yrs now and I would still keep my maggie rather than an ATI or Vortech......I am at a point now though where I want more and I dont like being limited. The low end though is just awesome.

 

Spray it.

That KB, though, cannot be looked away from easily.

 

i agree...but the cowl hood is even taller/bigger than the ones for the maggy.

 

Ok. Well hood is not an issue for me and I will not spay no matter what. So is it safe to say I can expect about 450-470rwhp if I switch to a blower cam?