HEI Distributors
i am building a 383 stroker and was wondering if the MSD pro billet ditributor is a good choice for my ignition system?
but i am pretty sure that if you have a HEI you also need a ECM but not possitive
i am running a demon 750
but i am pretty sure that if you have a HEI you also need a ECM but not possitive
i am running a demon 750
You could drop in a 1975-1979 HEI with no problems.
The distributor is just a distributor. It rotates and delivers spark to the correct cylinder at the correct time. Everything else inside the distrubutor is extras.
An aftermarket ignition, MSD-6A etc, replaces the module inside the distributor. The weights, springs and vacuum advance just modify the spark curve for street drivability and they can all be modified.
I use a Holly Annihilator ignition in my race car. I'm using a late model HEI as a distrubutor because it uses a small cap and fits nicely. Since there's nothing inside the distributor to change the spark curve I have it set to full advance. The late model HEI uses the computer to adjust the timing depending on the engine load. There's nothing inside my distributor except the magnetic pickup.
There's nothing wrong with using a factory HEI distributor. Just make sure it's not worn out. The MSD pro billet is nice but for the extra cost I don't think it's worth it.
------------------
Stephen's racing page
or check out the race car
87 IROC SuperPro race car
461 big block
Best ET on a time slip: 11.418
Best MPH on a time slip: 117.01
Best corrected ET: 11.051
Altitude corrected rear wheel HP: 468
Best 60 foot: 1.595
Member of the Calgary Drag Racing Association
The distributor is just a distributor. It rotates and delivers spark to the correct cylinder at the correct time. Everything else inside the distrubutor is extras.
An aftermarket ignition, MSD-6A etc, replaces the module inside the distributor. The weights, springs and vacuum advance just modify the spark curve for street drivability and they can all be modified.
I use a Holly Annihilator ignition in my race car. I'm using a late model HEI as a distrubutor because it uses a small cap and fits nicely. Since there's nothing inside the distributor to change the spark curve I have it set to full advance. The late model HEI uses the computer to adjust the timing depending on the engine load. There's nothing inside my distributor except the magnetic pickup.
There's nothing wrong with using a factory HEI distributor. Just make sure it's not worn out. The MSD pro billet is nice but for the extra cost I don't think it's worth it.
------------------
Stephen's racing page
or check out the race car
87 IROC SuperPro race car
461 big block
Best ET on a time slip: 11.418
Best MPH on a time slip: 117.01
Best corrected ET: 11.051
Altitude corrected rear wheel HP: 468
Best 60 foot: 1.595
Member of the Calgary Drag Racing Association
so what you are saying is i can use the 1975-1979 distributor but i will need a ignition box or i can pay a little more an buy the HEI with it built into one package and computer will make the adjustments
You don't need an aftermarket ignition but it helps. Those HEI distributors contain everything you need. The module is inside the cap and the coil is in the top. There are only 2 wires going to the cap, 3 if you want to use a tach.
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