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Old 07-25-2023, 09:35 PM
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R 70 Judge R 70 Judge is offline
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Quote:
Originally Posted by HWYSTR455 View Post
Does you ATI balancer have the magnets in the outer shell? If not, you can just get the outer shell that has the magnets. They also make a reluctor wheel incorporated into the balance cover. I've always shied away from ATI balancers because they only make 3 bolt pulley balancers for Pontiac.

Innovator West is the only balancer I know that has the magnets built in (as pointed out previously) and they do sell a pickup bracket for Pontiacs. I have no experience with them so can't comment.

I believe I mentioned before that there is a late 70s timing cover with no timing marks on it, which would make it easier to mount a pickup bracket.

I've read a number of posts by the Holley EFI forums admin that state there's not much benefit of using anything more than a 4x wheel, just to throw that out there.

A good way to tell if there's an issue with the current crank sensor is to toss a timing light on it and enable static timing. If the timing reading is jumping around, then you know you have an issue.

The problems with the dual sync show up as either crank or cam sensor inconsistent readings, or they don't read/work at all. They are also failure prone. If you are concerned about it, then just replace the distributor entirely. If you have a crank sensor setup already, and are doing DIS/CNP etc, just get a block off type cam sensor and be done with it.

My issue is I don't care for the look of mounting 8 coils, and that's the only reason I haven't gone DIS/CNP. I will probably use a pro billet for a cam signal, and to distribute spark via conventional rotor/cap setup.


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I appreciate all of the suggestions!

I don’t have magnets in my shell. I contacted ATI regarding the 4X or 12X shell on Monday. They answered lots of questions and were very helpful. Replacing my shell with a shell with magnets is $300-$350’ish depending on how many magnets you add. They can also service/rebuild it for $85. They said it would take two weeks total. I strongly considered this because none of the accessory pulleys would need to be adjusted since the shell with magnets is the same width as their standard balancer. This option would’ve gotten pretty pricey with the other items I’d still need added in.

I called Holley/MSD and they were zero help. The MSD 8650 is only available in a 4X and they do not sell the kit pieces individually. On the website you can switch out the 8650 4X kit magnetic sensor for a Hall effect sensor for $30 extra… they told me that was a glitch and it wasn’t available in that configuration. https://www.holley.com/products/igni...its/parts/8650

I called Moroso and they don’t make a Pontiac crank trigger kit. They also don’t offer a Hall effect sensor in their kits. Their kits are nice and a lot cheaper than MSD. Plus they are black.

I ended up deciding on the Holley 556-171 7-INCH 12-1X CRANK TRIGGER KIT, SBC, HALL EFFECT kit as it was the most cost effective and had the biggest upside.
https://www.holley.com/products/parts/556-171

Having the extra resolution of a 12X vs a 4X can’t hurt. The kit already comes with the Hall effect sensor. I think we’ll be able to adapt the SBC kit without much trouble. Bonus points that it isn’t red

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