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msd 6 or 7 #1125859 12/02/11 03:21 AM 12/02/11 03:21 AM
Joined: Jan 2007 Posts: 8,040 Mt Morris Michigan mopar dave OP master
mopar dave OP master Joined: Jan 2007 Posts: 8,040 Mt Morris Michigan	any performance gains going from a 6 series to a 7 series msd box? my box has 137MJ/525V and the 7 series is 190MJ/535V. http://www.youtube.com/watch?v=aIxaesJ190U http://youtu.be/lCZAaN7fFLg

Re: msd 6 or 7 [Re: mopar dave] #1125860 12/02/11 05:56 AM 12/02/11 05:56 AM
Joined: Jan 2003 Posts: 2,923 A shed in England Tig master
Tig master Joined: Jan 2003 Posts: 2,923 A shed in England	Don't know if this helps but we're going to piggy back a MSD power grid on our 6AL this year rather than upgrade to a 7. '74 Challenger..9.46 @ 145.9 1/4, 6.001 @ 118 1/8 so far. 4023lb !!! # N/A, Marsh performance 655ci, Indy Maxx, T/R, Indy 600-13 X's, Street legal, pump gas, full interior, Cal-Tracs, mufflers, 3:73's and real 10.5 radials. 9.51 @ 142.4 1/4, 6.003 @ 114 1/8 with our old mule KB, 572-13, 580 wedge. RHD '68 Barracuda Fastback 323ci street/strip. Best ET 13.88 @ 99.03

Re: msd 6 or 7 [Re: mopar dave] #1125861 12/02/11 09:51 AM 12/02/11 09:51 AM
Joined: Jun 2003 Posts: 52,972 Romeo MI MR_P_BODY Master
MR_P_BODY Master Joined: Jun 2003 Posts: 52,972 Romeo MI	I cant say... all I've ever run was a 7al

Re: msd 6 or 7 [Re: mopar dave] #1125862 12/02/11 09:53 AM 12/02/11 09:53 AM
Joined: Jan 2003 Posts: 13,365 Marion, South Carolina [><] an8sec70cuda I Live Here
an8sec70cuda I Live Here Joined: Jan 2003 Posts: 13,365 Marion, South Carolina [><]	Nope, the 7 just has more features built in. CHIP '70 hemicuda, 575" Hemi, 727, Dana 60 '69 road runner, 440-6, 18 spline 4 speed, Dana 60 '71 Demon, 340, low gear 904, 8.75 '73 Chrysler New Yorker, 440, 727, 8.75 '90 Chevy 454SS Silverado, 476" BBC, TH400, 14 bolt '06 GMC 2500HD LBZ Duramax

Re: msd 6 or 7 [Re: MR_P_BODY] #1125863 12/02/11 10:41 AM 12/02/11 10:41 AM
Joined: Jan 2003 Posts: 24,562 Brookeville, Md Mr.Yuck Not enough dumb comments...yet
Mr.Yuck Not enough dumb comments...yet Joined: Jan 2003 Posts: 24,562 Brookeville, Md	might be off topic but I'm thinking of going w/ the Summit MSD, it has a built in rev limiter...all for $149 http://www.summitracing.com/parts/SUM-850610/ [IMG]http://i66.tinypic.com/pui5j.jpg[/IMG] Coming soon!!!!

Re: msd 6 or 7 [Re: Mr.Yuck] #1125864 12/02/11 01:17 PM 12/02/11 01:17 PM
Joined: Jan 2003 Posts: 16,376 D dogdays I Live Here
dogdays I Live Here D Joined: Jan 2003 Posts: 16,376	At the risk of going off-topic, isn't that a reverse-engineered Chinese 6AL? R.

Re: msd 6 or 7 [Re: dogdays] #1125865 12/02/11 01:29 PM 12/02/11 01:29 PM
Joined: Jan 2003 Posts: 19,363 Las Vegas Al_Alguire I Live Here
Al_Alguire I Live Here Joined: Jan 2003 Posts: 19,363 Las Vegas	How about a lightly used 7530 box "I am not ashamed to confess I am ignorant of what I do not know." "It's never wrong to do the right thing"

Re: msd 6 or 7 [Re: Al_Alguire] #1125866 12/02/11 02:05 PM 12/02/11 02:05 PM
Joined: Jan 2007 Posts: 8,040 Mt Morris Michigan mopar dave OP master
mopar dave OP master Joined: Jan 2007 Posts: 8,040 Mt Morris Michigan	I just thought maybe the extra millijoules might make a cleaner burn and alittle more power. whats the diff. between the 7520 and the 7530 Al? currently using the summit 6 box made by mallory. http://www.youtube.com/watch?v=aIxaesJ190U http://youtu.be/lCZAaN7fFLg

Re: msd 6 or 7 [Re: mopar dave] #1125867 12/02/11 02:25 PM 12/02/11 02:25 PM
Joined: Mar 2003 Posts: 2,505 PA moparacer master
moparacer master Joined: Mar 2003 Posts: 2,505 PA	I don't know about the millijouls or whatever that is but I can switch back and forth between a 6AL and a 7AL box all day long and run the exact same ET. Done it several times clean down to 7 second ET's normally aspirated. Boosted or Nitrous setups would be a different story. 67 Barracuda street/bracket car 11.27-119 68 Dart 502 BB 8.70s-152 414 cid SB Dragster 7.65-174

Re: msd 6 or 7 [Re: Tig] #1125868 12/02/11 02:50 PM 12/02/11 02:50 PM
Joined: Aug 2008 Posts: 4,070 Mo. racerx master
racerx master Joined: Aug 2008 Posts: 4,070 Mo.	Quote: Don't know if this helps but we're going to piggy back a MSD power grid on our 6AL this year rather than upgrade to a 7. Tig I'll like to hear some feedback on the grid as i also thought of piggybacking the grid on my 6..............

Re: msd 6 or 7 [Re: racerx] #1125869 12/02/11 03:10 PM 12/02/11 03:10 PM
Joined: Jan 2007 Posts: 8,040 Mt Morris Michigan mopar dave OP master
mopar dave OP master Joined: Jan 2007 Posts: 8,040 Mt Morris Michigan	ok, maybe i'll stay with my 6 box. thanks http://www.youtube.com/watch?v=aIxaesJ190U http://youtu.be/lCZAaN7fFLg

Re: msd 6 or 7 [Re: mopar dave] #1125870 12/02/11 03:38 PM 12/02/11 03:38 PM
Joined: Aug 2003 Posts: 43,185 Bend,OR USA C Cab_Burge I Win
Cab_Burge I Win C Joined: Aug 2003 Posts: 43,185 Bend,OR USA	Quote: any performance gains going from a 6 series to a 7 series msd box? my box has 137MJ/525V and the 7 series is 190MJ/535V. The only time your going to see a measurable difference is if the 6 unit is not up to the load needed to meet your motors ignition needs That being said I'm a firm believer in having more than you need on some race parts, feul supply, valve spring pressure, tire bite and so on. I have been using the MSD 7 series boxes and appropriate coils for years on all of my cars Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)

Re: msd 6 or 7 [Re: Cab_Burge] #1125871 12/02/11 07:24 PM 12/02/11 07:24 PM
Joined: Jul 2003 Posts: 12,129 Cleveland sunroofgtx I Live Here
sunroofgtx I Live Here Joined: Jul 2003 Posts: 12,129 Cleveland	We did back to back tests this year at Norwalk. Switching to the Analog 7 and coil leaned my Hemi out considerably. ET picked up all the way down the track until the chip hit it. Go for the 7. https://board.moparts.org/ubbthreads/show...rue#Post6826605 Join the quickest team in motorsports. Team FireCore. CustomWiresets.com

Re: msd 6 or 7 [Re: sunroofgtx] #1125872 12/04/11 01:30 PM 12/04/11 01:30 PM
Joined: Jan 2003 Posts: 13,365 Marion, South Carolina [><] an8sec70cuda I Live Here
an8sec70cuda I Live Here Joined: Jan 2003 Posts: 13,365 Marion, South Carolina [><]	Quote: We did back to back tests this year at Norwalk. Switching to the Analog 7 and coil leaned my Hemi out considerably. ET picked up all the way down the track until the chip hit it. Go for the 7. https://board.moparts.org/ubbthreads/show...rue#Post6826605 That test is inconclusive at best. CHIP '70 hemicuda, 575" Hemi, 727, Dana 60 '69 road runner, 440-6, 18 spline 4 speed, Dana 60 '71 Demon, 340, low gear 904, 8.75 '73 Chrysler New Yorker, 440, 727, 8.75 '90 Chevy 454SS Silverado, 476" BBC, TH400, 14 bolt '06 GMC 2500HD LBZ Duramax

Re: msd 6 or 7 [Re: Tig] #1125873 12/04/11 05:22 PM 12/04/11 05:22 PM
Joined: Jan 2007 Posts: 8,040 Mt Morris Michigan mopar dave OP master
mopar dave OP master Joined: Jan 2007 Posts: 8,040 Mt Morris Michigan	How much for the 7530 Al? I was looking at using the 7520 digital box. I will be using a 1050 or the SV1,so maybe the 7 box would be an advantage. My 408 is still on pump gas@10.5:1. http://www.youtube.com/watch?v=aIxaesJ190U http://youtu.be/lCZAaN7fFLg

Re: msd 6 or 7 [Re: racerx] #1125874 12/05/11 02:43 PM 12/05/11 02:43 PM
Joined: Jan 2003 Posts: 2,923 A shed in England Tig master
Tig master Joined: Jan 2003 Posts: 2,923 A shed in England	Quote: Quote: Don't know if this helps but we're going to piggy back a MSD power grid on our 6AL this year rather than upgrade to a 7. Tig I'll like to hear some feedback on the grid as i also thought of piggybacking the grid on my 6.............. + Sorry to hi jack the thread but the main reason we'll be going to the Grid is 'cause we're also upgrading to a crank trigger. The programmable functions can be found here: http://www.msdignition.com/Products/Igni...oller_Only.aspx I will post feedback but our season doesn't start 'til May next year '74 Challenger..9.46 @ 145.9 1/4, 6.001 @ 118 1/8 so far. 4023lb !!! # N/A, Marsh performance 655ci, Indy Maxx, T/R, Indy 600-13 X's, Street legal, pump gas, full interior, Cal-Tracs, mufflers, 3:73's and real 10.5 radials. 9.51 @ 142.4 1/4, 6.003 @ 114 1/8 with our old mule KB, 572-13, 580 wedge. RHD '68 Barracuda Fastback 323ci street/strip. Best ET 13.88 @ 99.03

Re: msd 6 or 7 [Re: mopar dave] #1125875 12/05/11 03:37 PM 12/05/11 03:37 PM
Joined: Jan 2003 Posts: 19,363 Las Vegas Al_Alguire I Live Here
Al_Alguire I Live Here Joined: Jan 2003 Posts: 19,363 Las Vegas	Quote: whats the diff. between the 7520 and the 7530 Al? the 7530 is fully programmable the 7520 is not, ie rev limits timing curves etc.. "I am not ashamed to confess I am ignorant of what I do not know." "It's never wrong to do the right thing"

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