Spark box or new dizzy??

[bot0611]

Ive heard pertronix has a huge spark..i already have a spark box that crapped out on me and wondering i i should go with a new dizzy only.

 

[dyeager535]

As long as you've got HEI, and not points, unless you are regularly running 4500RPM+, you don't need anything other than stock.

 

[bot0611]

I now you can run stock ignitions but the advantages of a good spark are very good, i saved a lot of gas using the spark box

 

[dyeager535]

Uhh, you can't save anything if the original was working right. Burning gas is burning gas. Power is made only as the piston travels down the cylinder, either it ignites and burns, or it doesn't. Anything burned off/ignited by "multiple sparks" after the piston has passed TDC is wasted energy.

If 30,000 volts (stock HEI) isn't enough to ignite an air fuel mix from 12:1 to 14.7:1, you've got other problems, such as oil fouling, bad ignition components (plugs, wires, cap, rotor, pickup, etc).

Non-manufacturer testing has proven that on stock engines, properly tuned, in "normal" conditions, HEI makes as much, if not more, power than any of the aftermarket setups.

 

[bot0611]

Now thats good info. ill look into it.
thanks

 

[BILTIT]

In some cases points work better than HEI, just more maintenance. Points have a natural retard (~2 degrees) on high rpms that HEI does not, this helps some racers but not needed for trucks much.

I ran points in my street/strip car for years with no problems, i still use them as a trigger for my box.