Mallory Ignition Parts - Page 2

**mockingbird812** · #11 10-27-2011, 09:28 PM

More info found....

<span style="font-style: italic">...the dual point ignitions had point sets that are are offset a few degrees on the point plate... one set opens the circuit and the other set closes the circuit therefore giving the coil more saturation time (dwell) in the same 30 degrees of crank rotation as single points. I had a Mallory Rev-Pol distributor in my '56 Chevy which worked very well with 11:1 compression ratio and at 6500 RPM. Pontiac introduced the transistorized ignition system in 1963 and that system was far better than any of the dual point systems.The Mallory Rev-Pol distributor had dual coils and dual external capacitors. The Rev-Pol dual points were operated by a 4-lobe distributor cam which increased coil saturation time and reduced point bounce at high RPM. With a point type ignition, coil output voltage is reduced because coil saturation time decreases as the RPM increases and that is when dual points will help maintain coil saturation time at high RPM. Today, one of the best replacements for a point type ignition is a Pertronix electronic coversion kit. The Pertronix kit provides the same amount of coil saturation time at infinite RPM as it does at idle RPM. However, that kit is not as good as a stock GM high energy ignition found on cars today. The HEI systems on GM vehicles is not necessary for high compression ratios or high RPM but it is required to fire the lean fuel-air mixtures that were mandated by the EPA to reduce emmissions.

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**Salvatore** · #12 10-27-2011, 09:40 PM

Jed-I use that black Mallory coil that bolts to the firewall. They look great for the Day-2 look. My stock single point went to 8 grand with no problems back in the day. Accel points with a good distributor curve set-up and you are done. I bet your motor will not see over 6,000 much so you will be fine in any case. I have a big yellow Accel coil in the box if interested and also early Accel wires that were never used. Come on over!

**mockingbird812** · #13 10-27-2011, 10:06 PM

Sammy has lots of cool stuff!!!

**PxTx** · #14 10-27-2011, 10:53 PM

Okay, who's run a dual point dizzy and wired in a switch to eliminate the first set of points to retard ignition timing on the top end? Don't see how you could do that with a double life.

**Salvatore** · #15 10-27-2011, 11:09 PM

retard timing on this Site?

Nova Jed · #16 10-27-2011, 11:21 PM

Flat out foot to the floor!

**mockingbird812** · #17 10-27-2011, 11:30 PM

Paul - don't think you can do it with a "double life". Altho there are 2 sets of points, they are being fired with the same coil (single winding) at the same time (or nearly so) in order to increase dwell, whereas the rev/pol is two distinct circuits (2 coil windings, 2 condensers, 2 points).

Nova Jed · #18 10-28-2011, 12:07 AM

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: [email protected]</div><div class="ubbcode-body">Jed-I use that black Mallory coil that bolts to the firewall. They look great for the Day-2 look. My stock single point went to 8 grand with no problems back in the day. Accel points with a good distributor curve set-up and you are done. I bet your motor will not see over 6,000 much so you will be fine in any case. I have a big yellow Accel coil in the box if interested and also early Accel wires that were never used. Come on over! </div></div>

True Sam. It won't see 8 grand with this motor. I would be lucky enough to get it up to 5 or 6 with an auto?? The cam is good for 5500, so maybe?

**Salvatore** · #19 10-28-2011, 05:17 AM

a pure stock Chevy unit is good enough for that Captain Jed! Don't get to trick on yourself my son.

Nova Jed · #20 10-28-2011, 11:16 PM

Just got my 40 yr old Mallory 28675 today. Its amazing that something this old works better than my 5 yr old coil. Cleaned it up and tested it out on my 55. The tired 265 ran 3 times better. [img]<<GRAEMLIN_URL>>/hmmm.gif[/img] They don't make things like they used to.