[78w72]

I may have missed it, is this the digital 6al or the older analog one?

[64speed]

Digital

[b-man]

Crazy idea.

Put a recurved GM not aftermarket HEI in it and drive off into the sunset, with a spare module and a screwdriver in the glove box.

Even crazier idea.

GM points distributor with a modern coil along with a spare set of pre-gapped points and that same screwdriver in the glovebox.

Funny how reliable those factory ignition systems actually were, isn’t it.

[64speed]

I need a rev limiter. That’s how I blew up the first one. It runs fine with the RTR that’s in it now but the 6AL is really only for the limiter

[b-man]

So you’re saying that a rev limitation device couldn’t be added to a factory ignition system.

A points distributor that uses the points to trigger an MSD box is a way to do it. This way you can jumper out the MSD box and just run on the points alone should the MSD box crap out.

I used to keep those MSD supplied jumper wires in my glovebox.

[PAUL K]

Originally Posted by b-man

So you’re saying that a rev limitation device couldn’t be added to a factory ignition system.

A points distributor that uses the points to trigger an MSD box is a way to do it. This way you can jumper out the MSD box and just run on the points alone should the MSD box crap out.


I used to keep those MSD supplied jumper wires in my glovebox.

Aren't the stock points a rev limiter of a sort

[b-man]

Originally Posted by PAUL K

Aren't the stock points a rev limiter of a sort

I’m sure to a certain extent.

My 1974 455 would easily go to 6000 during a burnout if I wasn’t being careful, I usually shifted at 5200 and saw 5700 through the lights while bracket racing.

I ran a locked points distributor with an ancient MSD6A box, never used a rev limiter and managed to keep the stock cast rods and pistons inside the block for a decade of racing. Later went to a recurved points distributor with vacuum advance when I put it back on the street.

For your average 500 or so horsepower hot street Pontiac I’m sure factory points or HEI would handle 99% of anyone’s ignition needs.

[HWYSTR455]

Originally Posted by 64speed

I need a rev limiter. That’s how I blew up the first one. It runs fine with the RTR that’s in it now but the 6AL is really only for the limiter

Keep trying to tell you, YOU didn't blow the first one up by over revving it.


.

[64speed]

Originally Posted by HWYSTR455

Keep trying to tell you, YOU didn't blow the first one up by over revving it.


.

Ok well the Lunati lifters were not capable of handling 7500 RPM

[HWYSTR455]

They should be able to handle blips to 7500, think they would float before then though.


.

[HWYSTR455]

They should be able to handle blips to 7500, think they would float before then though.




.

[PAUL K]

Originally Posted by b-man

I’m sure to a certain extent.

My 1974 455 would easily go to 6000 during a burnout if I wasn’t being careful, I usually shifted at 5200 and saw 5700 through the lights while bracket racing.


I ran a locked points distributor with an ancient MSD6A box, never used a rev limiter and managed to keep the stock cast rods and pistons inside the block for a decade of racing. Later went to a recurved points distributor with vacuum advance when I put it back on the street.


For your average 500 or so horsepower hot street Pontiac I’m sure factory points or HEI would handle 99% of anyone’s ignition needs.

Agree..... I used an MSD 5 ..... Still have it. Thinking about testing it on my 70 and see if I notice an improvement.

[242177P]

Originally Posted by 64speed

I need a rev limiter.

Or an automatic.

[64speed]

Originally Posted by 242177P

Or an automatic.

What fun is that 🤣

[78w72]

MSD makes a in cap HEI module with an adjustable rev limiter, works pretty good in my experience, but i dont really need a rev limiter so switched back to a good ol GM module.

[64speed]

Well big shout out to MSD. Less than a week test and turn around. I called today to see if they received it and they have already tested it and are shipping me one back. Diode failed and took out a capacitor. They said 15-25 days just diagnosis time but they’ve only had it since Wednesday so kudos to them.

[triathlonx13]

Originally Posted by 64speed

Well big shout out to MSD. Less than a week test and turn around. I called today to see if they received it and they have already tested it and are shipping me one back. Diode failed and took out a capacitor. They said 15-25 days just diagnosis time but they’ve only had it since Wednesday so kudos to them.

Oh WOW! well, glad this has been resolved - good luck.

[kingbuzzo]

They are pretty good that way...they replaced mine post warranty no questions asked... 👍

[64speed]

Just an update to this. The MSD 6AL AND the distributor were bad. I sent the box in for evaluation and the replaced a diode and capacitor. Sent it back and I rechecked all the wire, it was good so I hooked the box up and fired it up. Ran about 15 minutes and died. I got the old screwdriver out and tapped the distributor and box and it fired up again and ran a couple of minutes then that was it. I then noticed that if I tapped on the distributor with the key on the MSD box light flashed. I sent a video of that to Grivera and even he thought it was weird as hell. Ordered a pro billet non ready to run distributor and got it yesterday. Stabbed it in and took off. Runs better than it ever has.