Electromotive trigger wheel part nr

Kid, the trigger wheel typically gets sandwiched between the damper and crank pulley, so it (the trigger wheel) must have the same bolt pattern as those other two items. My aftermarket 351C damper and crank pulley are both a four bolt pattern and the same as 351W and 302HO.

I have an older Electromotive trigger-wheel in my storage unit, I can check the part number this weekend. But to back-up what David wrote, the 351C harmonic dampener has the same 4 bolt pulley pattern as the Windsor V8's. Any trigger wheel that fits a 302, 351W or 5.0HO will also fit a 351C.

-G

Thanks for the input guys - much appreciated!

Per Electromotive's site:
For most 5.0L/351W 4-Bolt Damper Applications
7-1/4” Trigger Wheel PN: 220-72829

Note, that this is a 7-1/4' wheel, and not 6'

Anyways, since the 351C seems to use the same bolt pattern as 351W and 302, I should be safe with ordering that trigger wheel.

The #220-72660 is one I cannot find in Electromotive's current product list. Maybe it's not longer made, replaced, or did part numbers change. In that case, a little correction to the 351 engine build thread might be useful

Thanks,
Kid.

There may be interference problems with a larger diameter wheel.

quote:

Originally posted by Cowboy from Hell:
There may be interference problems with a larger diameter wheel.

Interference with, or in terms of?

I'd expect avoiding signal errors has more to do with the quality and position of bracket and sensor, rather than with the size of the trigger wheel. Am I wrong?

Not electrical interference, the wheel may hit the water pump or one of the idler pulley brackets.

Aha, thanks for the clarification

Kid, RE: trigger wheel interference; the trigger wheel I posted a picture of, earlier in this thread, is 6 1/2" in diameter.

On most Panteras, it's possible to remove the entire idler pulley and its mount, and adjust compressor belt tension by shifting the compressor itself. This is easier with the much lighter weight Sankyo/Sanden aluminum compressors, and cleans up the front of the engine for easier servicing.
Second observation: engine vibration will flex aftermarket crank-fire pickup wires and eventually crack some, especially if the leads are short or unsupported. One owner went through three Electramotive pickups during a 700-mile round trip, due to too-short leads. Once home, he extended the leads and tied them down, and had no more problems.

quote:

Originally posted by David_Nunn:
Kid, RE: trigger wheel interference; the trigger wheel I posted a picture of, earlier in this thread, is 6 1/2" in diameter.

So, the 7-1/4 one should be sticking out .375 inch more - Judging on the picture only (have no access tot the car right now), that should be doable, if necessary with small mods.

Compressor and its pully are removed, so they are not an issue.