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Re: SS/HA 71' Duster am I doing this right ? [Re: JC Childress] #155760 11/26/08 11:23 AM 11/26/08 11:23 AM
Joined: Nov 2003 Posts: 3,060 Western New York sixpackbee master
sixpackbee master Joined: Nov 2003 Posts: 3,060 Western New York	Quote: you wont have to turn the engine near as hard I hear you on that. Probably close to 1,000 revs less. 1959 Bugeye Sprite 1967 Charger Black L code 1967 Coronet R/T Convert Green 440 auto bought from original owner 1968 Charger R/T Bronze 440 4 spd console AM/FM 1969 Super Bee WM21H B5 A40 D21 N96 1969 Barracuda Formula S 340 Convert pilot car 1969 Hemi Road Runner RM23J D32 Omaha orange 4.10 Dana N96 N85 1970 Super Bee WM23N FE5 V1X 3.91 axle package, N96 1970 Road Runner RM21N B3 V1X D13 1971 MG Midget 1971 Road Runner RM23H GW3, A57 1972 Road Runner RM23P FY1, D21

Re: SS/HA 71' Duster am I doing this right ? [Re: JC Childress] #155761 11/26/08 11:26 AM 11/26/08 11:26 AM
Joined: Aug 2003 Posts: 2,902 New Jersey Bada Bing bremotorsports master
bremotorsports master Joined: Aug 2003 Posts: 2,902 New Jersey Bada Bing	It is more about the torque difference from the increased stroke than the displacement, especially if you intend to run the heaviest possible class. And you will definitely run less rpm because of the longer stroke. Also, since the heads are the same, the 340 "sees" the heads as better BECAUSE of fewer cubes. Bill Rolik

Re: SS/HA 71' Duster am I doing this right ? [Re: bremotorsports] #155762 11/26/08 12:24 PM 11/26/08 12:24 PM
Joined: Jan 2008 Posts: 411 Big Island ,VA J JC Childress OP mopar
JC Childress OP mopar J Joined: Jan 2008 Posts: 411 Big Island ,VA	I am really liking the 360 combo. Even carrying a few extra pounds, it seems like the logical way to go. For whatever reason, it just seems like nobody has got the Super Victor to outperform the old Victor 340. J.C. Childress (434) 665-9541

Re: SS/HA 71' Duster am I doing this right ? [Re: JC Childress] #155763 11/26/08 05:51 PM 11/26/08 05:51 PM
Joined: Jan 2003 Posts: 269 Kansas wishing I was in Ohio S SeanD enthusiast
SeanD enthusiast S Joined: Jan 2003 Posts: 269 Kansas wishing I was in Ohio	Quote: For whatever reason, it just seems like nobody has got the Super Victor to outperform the old Victor 340. A few years ago(maybe 10 years) I read an article about someone mating up a sb chevy victor intake to a 340 and running in ss/GT. They said the chevy intake outperformed the mopar intake by a bunch.

Re: SS/HA 71' Duster am I doing this right ? [Re: SeanD] #155764 11/26/08 06:00 PM 11/26/08 06:00 PM
Joined: Jan 2008 Posts: 411 Big Island ,VA J JC Childress OP mopar
JC Childress OP mopar J Joined: Jan 2008 Posts: 411 Big Island ,VA	Yeah, I know of folks that have done that. I just dont know how big of an advantage it is, if any. J.C. Childress (434) 665-9541

Re: SS/HA 71' Duster am I doing this right ? [Re: JC Childress] #155765 11/26/08 06:22 PM 11/26/08 06:22 PM
Joined: Aug 2003 Posts: 2,902 New Jersey Bada Bing bremotorsports master
bremotorsports master Joined: Aug 2003 Posts: 2,902 New Jersey Bada Bing	For a number of years, the hot ticket, for the 360 only, was the Offy Port-O-Sonic. I actually still have the one that I modified to create an air gap under the plenum. Bill Rolik

Re: SS/HA 71' Duster am I doing this right ? [Re: SeanD] #155766 11/26/08 08:29 PM 11/26/08 08:29 PM
Joined: Jan 2003 Posts: 5,898 Florida Locomotion master
Locomotion master Joined: Jan 2003 Posts: 5,898 Florida	Quote: Quote: For whatever reason, it just seems like nobody has got the Super Victor to outperform the old Victor 340. A few years ago(maybe 10 years) I read an article about someone mating up a sb chevy victor intake to a 340 and running in ss/GT. They said the chevy intake outperformed the mopar intake by a bunch. Hamburger use to have an adapter to use a small block Chevy intake on a small block Mopar. But that was in the '70's or '80's before the Mopar selection expanded.

Re: SS/HA 71' Duster am I doing this right ? [Re: bremotorsports] #155767 11/26/08 08:39 PM 11/26/08 08:39 PM
Joined: Jul 2006 Posts: 4,595 On the south side of Nowhere S S/ST 3040 master
S/ST 3040 master S Joined: Jul 2006 Posts: 4,595 On the south side of Nowhere	Quote: For a number of years, the hot ticket, for the 360 only, was the Offy Port-O-Sonic. I actually still have the one that I modified to create an air gap under the plenum. Bill Rolik It's a small world. Is that the only one you ever had? Super Stock intake picture deleted due to Top Secret Clearance Breech and threats! Last edited by S/ST 3040; 11/26/08 10:24 PM.

Re: SS/HA 71' Duster am I doing this right ? [Re: bremotorsports] #155768 11/26/08 09:06 PM 11/26/08 09:06 PM
Joined: Nov 2003 Posts: 3,060 Western New York sixpackbee master
sixpackbee master Joined: Nov 2003 Posts: 3,060 Western New York	Quote: For a number of years, the hot ticket, for the 360 only, was the Offy Port-O-Sonic We did some dyno work on a 360 SS engine and compared the Offy to the Victor 340. On a 360 the Port-O-Sonic was the way to go. This was on one of the better 360s around at that time. 1959 Bugeye Sprite 1967 Charger Black L code 1967 Coronet R/T Convert Green 440 auto bought from original owner 1968 Charger R/T Bronze 440 4 spd console AM/FM 1969 Super Bee WM21H B5 A40 D21 N96 1969 Barracuda Formula S 340 Convert pilot car 1969 Hemi Road Runner RM23J D32 Omaha orange 4.10 Dana N96 N85 1970 Super Bee WM23N FE5 V1X 3.91 axle package, N96 1970 Road Runner RM21N B3 V1X D13 1971 MG Midget 1971 Road Runner RM23H GW3, A57 1972 Road Runner RM23P FY1, D21

Re: SS/HA 71' Duster am I doing this right ? [Re: S/ST 3040] #155769 11/26/08 10:18 PM 11/26/08 10:18 PM
Joined: Aug 2003 Posts: 2,902 New Jersey Bada Bing bremotorsports master
bremotorsports master Joined: Aug 2003 Posts: 2,902 New Jersey Bada Bing	RE: "Air Gap" Offy There were two done locally. I still have one of them. Bill Rolik

Re: SS/HA 71' Duster am I doing this right ? [Re: Locomotion] #155770 11/26/08 10:22 PM 11/26/08 10:22 PM
Joined: Aug 2003 Posts: 2,902 New Jersey Bada Bing bremotorsports master
bremotorsports master Joined: Aug 2003 Posts: 2,902 New Jersey Bada Bing	Myron, I know Louis Smith in Canada made adapters, and I believe Sonny Stancil did as well. I am not sure if either did enough development with them to determine if a Chevy piece was markedly better. Bill Rolik

Re: SS/HA 71' Duster am I doing this right ? [Re: bremotorsports] #155771 11/26/08 10:23 PM 11/26/08 10:23 PM
Joined: Jul 2006 Posts: 4,595 On the south side of Nowhere S S/ST 3040 master
S/ST 3040 master S Joined: Jul 2006 Posts: 4,595 On the south side of Nowhere	Quote: RE: "Air Gap" Offy There were two done locally. I still have one of them. Bill Rolik I have a "one of two" produced S/S manifold.

Re: SS/HA 71' Duster am I doing this right ? [Re: S/ST 3040] #155772 12/01/08 02:49 PM 12/01/08 02:49 PM
Joined: Jan 2008 Posts: 411 Big Island ,VA J JC Childress OP mopar
JC Childress OP mopar J Joined: Jan 2008 Posts: 411 Big Island ,VA	I knew Louis Smith had done some testing with the Chevy intakes. I'm really suprised that in todays world of r&d that no one has ever just back to backed a bunch of intakes, including the Chevy against the Mopar intake. We did a dyno test on one of our customers engines ( at his request and expense ) , its a 355 Chevy, roughly 600hp, and the winner was a World Products intake. Some mentioned the Port A Sonic was better on the 360....what makes the 360 like a different intake than the 340 ? J.C. Childress (434) 665-9541

Re: SS/HA 71' Duster am I doing this right ? [Re: JC Childress] #155773 12/01/08 03:45 PM 12/01/08 03:45 PM
Joined: Nov 2003 Posts: 3,060 Western New York sixpackbee master
sixpackbee master Joined: Nov 2003 Posts: 3,060 Western New York	Quote: Some mentioned the Port A Sonic was better on the 360....what makes the 360 like a different intake than the 340 ? Mainly the different stroke. Desides the lower RPM in a 360 it also dictates different piston speeds and accelerations which in turn cause different intake signals. The cams are different too. We did back to back intakes on both 360 and 340 Super Stock engines several times. 1959 Bugeye Sprite 1967 Charger Black L code 1967 Coronet R/T Convert Green 440 auto bought from original owner 1968 Charger R/T Bronze 440 4 spd console AM/FM 1969 Super Bee WM21H B5 A40 D21 N96 1969 Barracuda Formula S 340 Convert pilot car 1969 Hemi Road Runner RM23J D32 Omaha orange 4.10 Dana N96 N85 1970 Super Bee WM23N FE5 V1X 3.91 axle package, N96 1970 Road Runner RM21N B3 V1X D13 1971 MG Midget 1971 Road Runner RM23H GW3, A57 1972 Road Runner RM23P FY1, D21

Re: SS/HA 71' Duster am I doing this right ? [Re: sixpackbee] #155774 12/01/08 03:53 PM 12/01/08 03:53 PM
Joined: Jan 2008 Posts: 411 Big Island ,VA J JC Childress OP mopar
JC Childress OP mopar J Joined: Jan 2008 Posts: 411 Big Island ,VA	What different intakes did ya'll test ? Were they on Super Stock engines and if so...what did the different engines like ? J.C. Childress (434) 665-9541

Re: SS/HA 71' Duster am I doing this right ? [Re: JC Childress] #155775 12/01/08 04:00 PM 12/01/08 04:00 PM
Joined: Nov 2003 Posts: 3,060 Western New York sixpackbee master
sixpackbee master Joined: Nov 2003 Posts: 3,060 Western New York	The 340s liked the Victor and the 360s liked the Port-O-Sonic. Looking into a sheet metal design would be interesting. BTW the engines tested were front runners in their time as was the shop so the tests were legit. 1959 Bugeye Sprite 1967 Charger Black L code 1967 Coronet R/T Convert Green 440 auto bought from original owner 1968 Charger R/T Bronze 440 4 spd console AM/FM 1969 Super Bee WM21H B5 A40 D21 N96 1969 Barracuda Formula S 340 Convert pilot car 1969 Hemi Road Runner RM23J D32 Omaha orange 4.10 Dana N96 N85 1970 Super Bee WM23N FE5 V1X 3.91 axle package, N96 1970 Road Runner RM21N B3 V1X D13 1971 MG Midget 1971 Road Runner RM23H GW3, A57 1972 Road Runner RM23P FY1, D21

Re: SS/HA 71' Duster am I doing this right ? [Re: sixpackbee] #155776 12/01/08 04:41 PM 12/01/08 04:41 PM
Joined: Jan 2008 Posts: 411 Big Island ,VA J JC Childress OP mopar
JC Childress OP mopar J Joined: Jan 2008 Posts: 411 Big Island ,VA	Does anyone still sell the Port a Sonics or did they go out of business ? Did ya'll test the adapted Chevy intakes as well ? J.C. Childress (434) 665-9541

Re: SS/HA 71' Duster am I doing this right ? [Re: sixpackbee] #155777 12/01/08 04:49 PM 12/01/08 04:49 PM
Joined: Aug 2003 Posts: 2,902 New Jersey Bada Bing bremotorsports master
bremotorsports master Joined: Aug 2003 Posts: 2,902 New Jersey Bada Bing	This exactly what I found with similar testing. Also, on the 340 (72-73 Low Compression), the Holley Strip Dominator ran the same ET as the Victor, but the Victor was 1 mph faster. Bill Rolik

Re: SS/HA 71' Duster am I doing this right ? [Re: S/ST 3040] #155778 12/25/08 09:10 PM 12/25/08 09:10 PM
Joined: Jul 2006 Posts: 4,595 On the south side of Nowhere S S/ST 3040 master
S/ST 3040 master S Joined: Jul 2006 Posts: 4,595 On the south side of Nowhere	Quote: I have a Magnum head that was donated to me for R&D, but, haven't persued yet. #466 Casting 1.92" x 1.625" Intake .100"_____63.7 .200"____122.9 .300"____165.4 .400"____203.5 .480"____219.0 Peak .550"____203.1 .600"____201.9 Exhaust .100"_____51.6 .200"____109.0 .300"____148.9 .400"____159.7 .500"____166.3 Intake has my valve job using the factory valve. Exhaust was completely unmodified. It was done after .500" As ugly as it is, it flows better than an unported LA head. I'll still take the 360 LA head for racing, as long as porting is allowed.

Re: SS/HA 71' Duster am I doing this right ? [Re: S/ST 3040] #155779 12/26/08 12:38 PM 12/26/08 12:38 PM
Joined: Dec 2005 Posts: 293 Kansas City Metro M mbogina enthusiast
mbogina enthusiast M Joined: Dec 2005 Posts: 293 Kansas City Metro	when we ran the 71 Duster TQ combo in SS/IA, we also used the Holley Strip Dominator (modified/with spacers) for the best HP/TQ. I still feel the 71 Hi comp/small TQ/308 head combo is very viable when compared to the 360 Be a Rebel- Break the Laws of Physics!

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