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BENCH RACING: 8-71 V.S. Procharger? #518019 11/07/09 11:57 AM 11/07/09 11:57 AM
Joined: Sep 2007 Posts: 626 Mid-Ohio B Bakaruda432 OP mopar addict
Bakaruda432 OP mopar addict B Joined: Sep 2007 Posts: 626 Mid-Ohio	It seems in recent years that the old 6&8-71 Roots superchargers have been given a bad rap. Most performance car mags seem to point to the Procharger or similar Centrifugal superchargers over the older Roots blowers. Is this necessarily true, especially in light of E-85 fuel and water injection? I love the old '70-'80s hole thru the hood Pro-Street look! What are your thoughts?

Re: BENCH RACING: 8-71 V.S. Procharger? [Re: Bakaruda432] #518020 11/07/09 11:59 AM 11/07/09 11:59 AM
Joined: Jan 2003 Posts: 4,152 SO. CAL. 7 70blackfish master
70blackfish master 7 Joined: Jan 2003 Posts: 4,152 SO. CAL.	If I was going with a supercharger, I would go with a 8-71.

Re: BENCH RACING: 8-71 V.S. Procharger? [Re: 70blackfish] #518021 11/07/09 12:23 PM 11/07/09 12:23 PM
Joined: Oct 2008 Posts: 370 Suffolk County, New York 1 1mean340 enthusiast
1mean340 enthusiast 1 Joined: Oct 2008 Posts: 370 Suffolk County, New York	I'm just guessin here but I have always heard the centrifugal blowers were more efficient, built less heat per lb of boost which = more power. My guess would be you'd make more peak power with the centrifugal but you'd make a lot more torque and power right off the bat with the roots. I have always wondered this myself though. I have seen many debates between centrifugal blowers and hybrid roots/twin screws, but my guess is a plain old roots would be the most inefficient (??)

Re: BENCH RACING: 8-71 V.S. Procharger? [Re: 1mean340] #518022 11/07/09 12:39 PM 11/07/09 12:39 PM
Joined: Feb 2007 Posts: 6,295 U.S. M moparniac master
moparniac master M Joined: Feb 2007 Posts: 6,295 U.S.	procharger...... bigtimeauto runs one and is way faster than metalstorm and hits roots by like 2 seconds..... Mopar Performance

Re: BENCH RACING: 8-71 V.S. Procharger? [Re: moparniac] #518023 11/07/09 12:44 PM 11/07/09 12:44 PM
Joined: Jan 2003 Posts: 2,533 Alexandria, LA B Blucuda413 master
Blucuda413 master B Joined: Jan 2003 Posts: 2,533 Alexandria, LA	Which procharger for a hemi in the 540 to 572 size???? Or would it be better to go a little smaller ci with a big procharger. What would be best for a reliable 850 to 1000 hp engine???

Re: BENCH RACING: 8-71 V.S. Procharger? [Re: Blucuda413] #518024 11/07/09 12:49 PM 11/07/09 12:49 PM
Joined: Apr 2007 Posts: 951 Temperance, MI P prochargedhemi super stock
prochargedhemi super stock P Joined: Apr 2007 Posts: 951 Temperance, MI	depends what kinda power you are looking for, with a 540 or 572 you could prly make 1000hp with a small d-series procharger, I personally like all there f-series blowers and would recommend an f-2 just so you have room to grow (since you know you'll want more)

Re: BENCH RACING: 8-71 V.S. Procharger? [Re: moparniac] #518025 11/07/09 01:49 PM 11/07/09 01:49 PM
Joined: Jan 2005 Posts: 3,635 Oakland, MI D dizuster master
dizuster master D Joined: Jan 2005 Posts: 3,635 Oakland, MI	Quote: procharger...... bigtimeauto runs one and is way faster than metalstorm and hits roots by like 2 seconds..... Well fuel cars have roots, and they are like 4 seconds faster then bigtimeauto...So roots must be better. Come on seriously?...

Re: BENCH RACING: 8-71 V.S. Procharger? [Re: dizuster] #518026 11/07/09 02:00 PM 11/07/09 02:00 PM
Joined: Feb 2007 Posts: 6,295 U.S. M moparniac master
moparniac master M Joined: Feb 2007 Posts: 6,295 U.S.	Quote: Quote: procharger...... bigtimeauto runs one and is way faster than metalstorm and hits roots by like 2 seconds..... Well fuel cars have roots, and they are like 4 seconds faster then bigtimeauto...So roots must be better. Come on seriously?... Well I was taking it this was a street car type question...... and isnt the fuel cars way bigger..... seriously? Mopar Performance

Re: BENCH RACING: 8-71 V.S. Procharger? [Re: dizuster] #518027 11/07/09 02:22 PM 11/07/09 02:22 PM
Joined: Jan 2003 Posts: 10,766 Central Valley, CA. Quicksilver440 I Live Here
Quicksilver440 I Live Here Joined: Jan 2003 Posts: 10,766 Central Valley, CA.	Quote: Quote: procharger...... bigtimeauto runs one and is way faster than metalstorm and hits roots by like 2 seconds..... Well fuel cars have roots, and they are like 4 seconds faster then bigtimeauto...So roots must be better. Come on seriously?...

Re: BENCH RACING: 8-71 V.S. Procharger? [Re: Quicksilver440] #518028 11/07/09 02:30 PM 11/07/09 02:30 PM
Joined: Mar 2008 Posts: 5,746 Ontario, Canada Dodgem master
Dodgem master Joined: Mar 2008 Posts: 5,746 Ontario, Canada	Well my understanding too is the roots takes a lot of power to spin, is less efficent while creating more heat. 3 strikes but gets a couple back for the coolness factor??

Re: BENCH RACING: 8-71 V.S. Procharger? [Re: Dodgem] #518029 11/07/09 02:38 PM 11/07/09 02:38 PM
Joined: Feb 2007 Posts: 6,295 U.S. M moparniac master
moparniac master M Joined: Feb 2007 Posts: 6,295 U.S.	I choose a procharger cause they fit under a hood.... here in PA roost wont pass inspection.... plus they are cooler Mopar Performance

Re: BENCH RACING: 8-71 V.S. Procharger? [Re: Quicksilver440] #518030 11/07/09 03:32 PM 11/07/09 03:32 PM
Joined: Jul 2005 Posts: 8,647 ELYRIA,OH B blownzoom440
blownzoom440 B Joined: Jul 2005 Posts: 8,647 ELYRIA,OH	Quote: Quote: Quote: procharger...... bigtimeauto runs one and is way faster than metalstorm and hits roots by like 2 seconds..... Well fuel cars have roots, and they are like 4 seconds faster then bigtimeauto...So roots must be better. Come on seriously?... it made me laugh also.i only put 12 lbs in mine not 23# and only have 446 cubes and 3900lbs not 2800 or so of the other person.just so you can play with the #'s.i dont care who is better or anything! it is what it is and i have fun.

Re: BENCH RACING: 8-71 V.S. Procharger? [Re: blownzoom440] #518031 11/07/09 03:45 PM 11/07/09 03:45 PM
Joined: Jan 2003 Posts: 1,771 St.Clair Shores MI. tilt top fuel
tilt top fuel Joined: Jan 2003 Posts: 1,771 St.Clair Shores MI.	I think it comes down to mass.Roots have the 2 big rotors, that take more torque to spin.The fact that they create more heat is due in part to the surface area of the rotors. Prochargers are spinning some cogs as do the Roots, but they're only spinning a turbine wheel to charge the air not a couple of 18" rotors. Procharger all the way, right behind Turbo's 68 CORONET R/T BEST MACHINE BUILT EFI'd TWIN TURBO(UP and RUNNING !!) 03 Mach1

Re: BENCH RACING: 8-71 V.S. Procharger? [Re: moparniac] #518032 11/07/09 04:15 PM 11/07/09 04:15 PM
Joined: Jul 2003 Posts: 977 Colorado 5 506RR super stock
506RR super stock 5 Joined: Jul 2003 Posts: 977 Colorado	Quote: procharger...... bigtimeauto runs one and is way faster than metalstorm and hits roots by like 2 seconds..... Wow! Don't take any advice from this guy concerning superchargers. That is funny!

Re: BENCH RACING: 8-71 V.S. Procharger? [Re: 506RR] #518033 11/07/09 04:30 PM 11/07/09 04:30 PM
Joined: Feb 2007 Posts: 6,295 U.S. M moparniac master
moparniac master M Joined: Feb 2007 Posts: 6,295 U.S.	Quote: Quote: procharger...... bigtimeauto runs one and is way faster than metalstorm and hits roots by like 2 seconds..... Wow! Don't take any advice from this guy concerning superchargers. That is funny! this is benchracing Mopar Performance

Re: BENCH RACING: 8-71 V.S. Procharger? [Re: moparniac] #518034 11/07/09 05:36 PM 11/07/09 05:36 PM
Joined: Jul 2005 Posts: 1,472 Overland Park, KS. J Joshs68 pro stock
Joshs68 pro stock J Joined: Jul 2005 Posts: 1,472 Overland Park, KS.	roots are just too dam cool!!!

Re: BENCH RACING: 8-71 V.S. Procharger? [Re: Joshs68] #518035 11/07/09 05:41 PM 11/07/09 05:41 PM
Joined: Sep 2005 Posts: 12,481 Chino Valley RodStRace I Live Here
RodStRace I Live Here Joined: Sep 2005 Posts: 12,481 Chino Valley	Becnh racing don't need no FACTS, but here you go http://www.superchargersonline.com/content.asp?id=5

Re: BENCH RACING: 8-71 V.S. Procharger? [Re: Bakaruda432] #518036 11/07/09 06:16 PM 11/07/09 06:16 PM
Joined: Mar 2006 Posts: 5,067 Orlando Florida blown572dart master
blown572dart master Joined: Mar 2006 Posts: 5,067 Orlando Florida	I would just go with a screw

Re: BENCH RACING: 8-71 V.S. Procharger? [Re: blown572dart] #518037 11/07/09 07:07 PM 11/07/09 07:07 PM
Joined: Feb 2004 Posts: 2,495 Richmond , Virginia BEEQUIK top fuel
BEEQUIK top fuel Joined: Feb 2004 Posts: 2,495 Richmond , Virginia	I'm gonna lie and say I dont care about the power but I'm gonna bust if I dont get to try this thing out next year!!... 5591796-IMG_7673_2.JPG (216 downloads)

Re: BENCH RACING: 8-71 V.S. Procharger? [Re: BEEQUIK] #518038 11/07/09 07:17 PM 11/07/09 07:17 PM
Joined: Jul 2005 Posts: 8,647 ELYRIA,OH B blownzoom440
blownzoom440 B Joined: Jul 2005 Posts: 8,647 ELYRIA,OH	Quote: I'm gonna lie and say I dont care about the power but I'm gonna bust if I dont get to try this thing out next year!!... think about 900ft lbs at 3,000 rpm.

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