MSD Ignition - The 1947 - Present Chevrolet & GMC Truck Message Board Network

shavedchevy · 01-28-2004, 11:13 PM

What kinda gains am I looking at, if I install a basic kit on my 350? Is there a better maker for this than MSD?

*zzChevy* · 01-28-2004, 11:41 PM

I installed the 6A kit. Didn't really see any changes other than better starting. I'm sure at 4500-5500 it will come in handy though.

My Grandfather has had the 6A installed in his wagon sparking a Chevy 350 for almost 10 years now. No problems what so ever.

Just checked, 280Kmiles total on the wagon. He installed it 130K ago.

1974StepSide · 01-29-2004, 04:50 AM

Can any one explain the difference between the 6A and 6AL in "laymans" terms? I'm no scientist, just wondering the benefit of one over the other.

MylilBowTie · 01-29-2004, 05:02 AM

Rev limiter I Believe. It cuts spark to certain cylinders at certain times so that it doesn't rev past the designated rpm.

69c10stepside · 01-29-2004, 06:01 AM

Quote:

Originally posted by shavedchevy
What kinda gains am I looking at, if I install a basic kit on my 350? Is there a better maker for this than MSD?

When I open up summit I see lots of vendors selling electronic spark boost stuff now.. but the only two names that I have ever dealt with have been Msd and Jacobs electronics. Jacob's is a bit more pricer but other then that, for me I couldnt tell which one did the best job for me.

**swervin ervin** · 01-29-2004, 02:34 PM

The difference between the 6A and 6AL is like said, it has a rev limter. You can set it at whatever you want it by changing the modules. It also has rubber cushions to absorb vibrations where the 6A doesn't. I love mine. I set my rev limiter 500 rpm higher than my shift light so I never have any worries of revving too high.

As far as Jacobs stuff. Junk. I wouldn't run that crap again if they gave it to me, which they don't btw. I got tired of getting stranded with the Jacobs crap. It is real bad about overheating and quits.

MSD all the way for me from now on.

Tom · 01-29-2004, 05:43 PM

MSD is the best, mallory is good too. Jacobs- well I can't find a single person who praises jacobs so far over the years, so thats gota tell you somthing. I put a MSD 6a box and blaster 2 coil [super HEI kit] on my 10:1 385 a couple years ago to replace the POS accel stuff [another comapny that sells JUNK ignition stuff]. Not only did it start easier, but since I had no choke it was very hard to keep running once it fired in the mornings in winter, and after I put the kit on I could fire it up and let it idle until it warmed up. Torque below 3000rpm was deffenatley improved, emissions improved, and I got about 300rpm more of usable power in the upper rev band. This is what a ignition system will do to a hi-po, high compression motor. On a stock 350, its not going to do much of anything.

**swervin ervin** · 01-29-2004, 05:57 PM

A good ignition system on a stock motor will help. It will let it start easier and run smoother. IMO, this should be the first thing done to a engine when starting upgrades. No, it won't give you more power from a stock motor, but it will use every bit you do have. If you can fire the plugs consistently and to the max, it is bound to help.

01-28-2004, 11:13 PM	#1
shavedchevy Registered User Join Date: Nov 2003 Location: Edmonton, Alberta, Canada Posts: 315	MSD Ignition What kinda gains am I looking at, if I install a basic kit on my 350? Is there a better maker for this than MSD? __________________ Dennis

01-29-2004, 04:50 AM	#3
1974StepSide Play it Loud... Join Date: Aug 2002 Location: East San Jose, CA Posts: 465	Can any one explain the difference between the 6A and 6AL in "laymans" terms? I'm no scientist, just wondering the benefit of one over the other. __________________ Big Moe =-=-=-= 1974 Cheyenne Super Stepside, 350/400, Hooker Headers, Flowmaster Mufflers... Needs new doors, fenders, hood, and paint. 1952 Chevy Pickup waiting to be brought back home!

01-29-2004, 05:02 AM	#4
MylilBowTie Right turn Clyde Join Date: Nov 2002 Location: Cincinnati, Ohio Posts: 2,911	Rev limiter I Believe. It cuts spark to certain cylinders at certain times so that it doesn't rev past the designated rpm. __________________ 1974 C25 LWB: 454 4bbl Carb / TH400 / 3.73 1992 Camaro RS 305 TBI

01-29-2004, 02:34 PM	#6
swervin ervin You get what you pay for Join Date: Dec 1999 Location: Cherryville, NC Posts: 4,798	The difference between the 6A and 6AL is like said, it has a rev limter. You can set it at whatever you want it by changing the modules. It also has rubber cushions to absorb vibrations where the 6A doesn't. I love mine. I set my rev limiter 500 rpm higher than my shift light so I never have any worries of revving too high. As far as Jacobs stuff. Junk. I wouldn't run that crap again if they gave it to me, which they don't btw. I got tired of getting stranded with the Jacobs crap. It is real bad about overheating and quits. MSD all the way for me from now on. __________________ Mike 1985 Chevy C-10

01-29-2004, 05:43 PM	#7
Tom driving is in my blood Join Date: Dec 1999 Location: Mesa AZ Posts: 5,748	MSD is the best, mallory is good too. Jacobs- well I can't find a single person who praises jacobs so far over the years, so thats gota tell you somthing. I put a MSD 6a box and blaster 2 coil [super HEI kit] on my 10:1 385 a couple years ago to replace the POS accel stuff [another comapny that sells JUNK ignition stuff]. Not only did it start easier, but since I had no choke it was very hard to keep running once it fired in the mornings in winter, and after I put the kit on I could fire it up and let it idle until it warmed up. Torque below 3000rpm was deffenatley improved, emissions improved, and I got about 300rpm more of usable power in the upper rev band. This is what a ignition system will do to a hi-po, high compression motor. On a stock 350, its not going to do much of anything. __________________ -78 c10 short/step: 388cid, M20, 5/5 drop, lots more. Playtoy and first vehicle. -98 c1500 x-cab: 5.7L, 17" rims, 5/6 drop, flowmaster, helper bags,NBS rear disk brakes. -02 Suburban 4x4: leveled front -CBR600F4i, CBR600RR, CBR1000RR, and standup skis DISCLAIMER: I cant spell for the life of me.

01-28-2004, 11:41 PM	#2
zzChevy BANNED Join Date: Dec 2003 Posts: 105	I installed the 6A kit. Didn't really see any changes other than better starting. I'm sure at 4500-5500 it will come in handy though. My Grandfather has had the 6A installed in his wagon sparking a Chevy 350 for almost 10 years now. No problems what so ever. Just checked, 280Kmiles total on the wagon. He installed it 130K ago.

01-29-2004, 05:57 PM	#8
swervin ervin You get what you pay for Join Date: Dec 1999 Location: Cherryville, NC Posts: 4,798	A good ignition system on a stock motor will help. It will let it start easier and run smoother. IMO, this should be the first thing done to a engine when starting upgrades. No, it won't give you more power from a stock motor, but it will use every bit you do have. If you can fire the plugs consistently and to the max, it is bound to help.



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