Holley Sniper vs. Edelbrock Pro-Flo 4

jbc426 said

I watched the video from Holly on the Hyperspark system, and am impressed. Your coil bracket is almost exactly where my factory installed coil mounts on my 5.9 Magnum. Very clean looking.

HyperSpark Ignition - Holley

If I step up to the more tuneable Holley Multiport systems using one of the Holley Terminator, HP or Dominator systems, it looks like I would use their Dual-Sync distributor and possibly even upgrade to a COP ignition, correct?

Their Dual-Sync system says it can supply a crank-trigger signal, but is that something you would use OR would you install an actual crank trigger set-up to eliminate the possible/potential inaccuracies of a distributor derived crank trigger signal. Does the potential minor variation between the two sources even amount to any discernible difference in signal accuracy?

The reason I ask is because my A/C compressor is mounted below my alternator right where a crank trigger set-up would go, so without your fabrication/machining skills I have been kind of stuck at this junction.

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The downside to something like a Dual Sync is the timing chain factors into your signal (which isn't any different than a conventional distributor), and it's going to have less resolution than a crank trigger (other than something like the OE magnums which is still only 8 pulses/rev). Will you notice anything? I doubt it. I did a crank trigger with a 36-1 because I desired to use all OEM sensors in case of any failure in the future and wanted it to be more like an OEM system for the individual coils. Then you just use a 5.2/5.9 Mag distributor for the cam sensor. In my case with a Megasquirt and some fab work it was less expensive than a dual sync. This isn't a feature of a sniper or a terminator though.


I just made some square tubing with spacers inside of it that bolts to two bolts on the pan rail and bolted a $9 3.0L Ford ranger sensor to it. Then I had a 36-1 wheel made (there are several places that make standard diameters with custom IDs, I believe mine is 7" OD) for under $100 and simply tack welded it to the crank pulley. Set the air gap as required for the Ford sensor and it was good. But this is for only a more advanced system.