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3 Ch 10 bolt to 4 ch 12 bolt?

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Old 10-29-2017, 02:53 PM
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Default 3 Ch 10 bolt to 4 ch 12 bolt?

I'm on my way to pick up a 4 channel 12 bolt, I have a 3 ch 10 bolt in my 99 Trans am currently.

I know to make ABS work I need a reluctor wheel drilled in or something?

Can someone tell me exactly which part/part # I need to make this swap work?
Old 10-30-2017, 02:10 PM
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Unless there is a reluctor ring on the carrier, you are **** out of luck. You can buy one from Moser and weld it in place and then drill out the boss on top of the chunk to add the sensor but it is kind of a pain in the ***. Ask me how I know? LOL
Old 10-30-2017, 02:23 PM
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Strange 12 bolt has the hole already there. You would need to add the reluctor to the carrier and install your sensor and wiring like stock.
Old 10-30-2017, 02:58 PM
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If it's a Strange that would make it easier. I just assumed, my bad. Strange rules.
Old 10-30-2017, 09:07 PM
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Originally Posted by codyvette
If it's a Strange that would make it easier. I just assumed, my bad. Strange rules.
Not sure if its a strange, but I did just buy two reluctor wheels from a 4 channel from the classifieds!
So I need to weld the reluctor wheels to the wheels, then mount my existing sensor to the top of the rear?

Sorry I'm no mechanic, just wanna make sure I know exactly what needs to be done..
Old 10-31-2017, 06:58 AM
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No,on many points.
The 2 reluctors(small) from a 4 channel will not make it function with your 3 channel car. You need the large reluctor that presses(not welded) onto the carrier. You don't know yet if the rear you're getting has the hole for the sensor at the top of the rear.
Old 10-31-2017, 08:31 AM
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Yep, you need a single wheel inside the center of the housing right next to the ring gear for 3 channel.
Old 10-31-2017, 08:52 AM
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Originally Posted by FirstYrLS1Z
No,on many points.
The 2 reluctors(small) from a 4 channel will not make it function with your 3 channel car. You need the large reluctor that presses(not welded) onto the carrier. You don't know yet if the rear you're getting has the hole for the sensor at the top of the rear.
When I did this I had to put a couple of tac welds on the ring. It is quite thin for the inside diameter and doesn't provide much pinch. (Tension) You may have different results. I wouldn't try and weld it out, just enough to keep it from walking. Mine still works great, it's just in a friend's car because I wised up and got a 9".
Old 10-31-2017, 11:24 AM
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Originally Posted by FirstYrLS1Z
No,on many points.
The 2 reluctors(small) from a 4 channel will not make it function with your 3 channel car. You need the large reluctor that presses(not welded) onto the carrier. You don't know yet if the rear you're getting has the hole for the sensor at the top of the rear.
Is there a part # or a pic of the large reluctor?

I've also heard of running one of the wheel sensors to the rear channel in the car and having it work? Anyone know anything about this?



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