MSD ignition

junior barns · 04-22-2008, 10:35 PM

Is the digital 7 part # 75301 or 7530T legal in stock????

FED 387 · 04-22-2008, 10:49 PM

Personally I would call NHRA tech---The MSD website says it is "sportsman legal" but I do not know if it means Super classes or Stock/Super stock cars----Comp 387

Clay Arnett · 04-24-2008, 12:27 PM

Junior, Yes the box is legal in S/SS but be warned that those boxes have a traction control detection system and MSD recommends not using that box with a Distributor. When that goes off there is an imposed 4000 RPM rev limit for 24 hours. It says in the instructions that an NHRA official can reset it but what they leave out is that it's only at national events. If you are using a crank trigger you should be fine. Personally I would get the 7535 because it does not have traction control detection or the slew rate option. Hope this helps.

bsa633 · 04-24-2008, 03:45 PM

7535 is the preffered one for S/SS....atleast according to the track rep they have..who has been doing that for awhile!

terry1 · 04-25-2008, 08:40 AM

I have been using a 7530T for two years now,IHRA Stock Elim,with no problems.I am also using a MSD dist.and have had no problems with the traction control activation.

04-22-2008, 10:35 PM	#1
junior barns Senior Member Join Date: Jun 2006 Posts: 541 Likes: 11 Liked 20 Times in 14 Posts	MSD ignition Is the digital 7 part # 75301 or 7530T legal in stock????

04-22-2008, 10:49 PM	#2
FED 387 VIP Member Join Date: Jun 2006 Posts: 3,418 Likes: 523 Liked 332 Times in 180 Posts	Re: MSD ignition Personally I would call NHRA tech---The MSD website says it is "sportsman legal" but I do not know if it means Super classes or Stock/Super stock cars----Comp 387

04-24-2008, 12:27 PM	#3
Clay Arnett Member Join Date: Jul 2002 Location: Hartsville, IN Posts: 128 Likes: 0 Liked 0 Times in 0 Posts	Re: MSD ignition Junior, Yes the box is legal in S/SS but be warned that those boxes have a traction control detection system and MSD recommends not using that box with a Distributor. When that goes off there is an imposed 4000 RPM rev limit for 24 hours. It says in the instructions that an NHRA official can reset it but what they leave out is that it's only at national events. If you are using a crank trigger you should be fine. Personally I would get the 7535 because it does not have traction control detection or the slew rate option. Hope this helps. Last edited by Clay Arnett; 04-24-2008 at 12:30 PM. Reason: Add more info

04-24-2008, 03:45 PM	#4
bsa633 Banned Join Date: Mar 2002 Posts: 310 Likes: 0 Liked 0 Times in 0 Posts	Re: MSD ignition 7535 is the preffered one for S/SS....atleast according to the track rep they have..who has been doing that for awhile!

04-25-2008, 08:40 AM	#5
terry1 Member Join Date: Sep 2006 Location: Moncton, N.B. Posts: 276 Likes: 24 Liked 24 Times in 13 Posts	Re: MSD ignition I have been using a 7530T for two years now,IHRA Stock Elim,with no problems.I am also using a MSD dist.and have had no problems with the traction control activation.