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Home > Products > Super Dampers > Super Damper Crank Trigger Shells


Crank Trigger Shells

Trigger Shell


Shell diameter
Max # of Magnets
6"
16
7"
24
8"
28
Crank Trigger Shells
ATI offers a custom crank trigger shell option, eliminating an additional pulley being bolted to your damper. If you already own an ATI Super Damper, you can just change the outer shell to the trigger. ATI can place any number of magnets in the outer shell at whatever degree marks you wish. These aluminum crank trigger shells will work with “Flying Magnet” pick ups and other trigger sources. When placing your order, please have the desired quantity and location of magnets ready. Additional charges for extra magnets*.

How to order a custom trigger shell

OD
Damper Style
Bolt Pattern
Part #
8"
3 RING
CHEVY
916380TR
7"
3 RING
CHEVY
916680TR
7"
3 RING - 4 MAGNETS STARTING AT 60°
CHEVY
916680TR-60
7"
3 RING - 4 MAGNETS STARTING AT 55°
CHEVY
916680TR-55
7"
3 RING - 4 MAGNETS STARTING AT 50°
CHEVY
916680TR-50
7"
2 RING
CHEVY
916960TR
6"
3 RING
CHEVY
916730TR
6"
2 RING
CHEVY
916880TR
7"
3 RING
FORD 4 BOLT
916909TR
6"
3 RING
FORD 4 BOLT
916915TR
7"
2 RING
CHRYSLER
916611TR
7"
3 RING
CHRYSLER
916612TR


Cost is $250 if ordered as an outer shell only or as an option added to an existing damper. If ordering:
5-8 magnets
9-16 magnets
17+ magnets
add $50
add $100
add $150
  If installed on new damper, deduct $75 for 8" and $105 for 6" and 7" builds.

AEM Trigger Shell
AEM Infinity style shell
  AEM Trigger Options
ATI now features four new Super Damper shells with integrated steel trigger options that are compatible with the new AEM Infinity and other stand alone engine management systems. The integrated 24-tooth reluctor wheel eliminates the need for separate trigger wheels that can come loose, and also offers more accurate readings. If installed on new damper, deduct $50.

OD
Damper Style
Part #
Price
7"
AEM - 3 RING
916360-10AEM
$346.50
7"
AEM - 3 RING - 6-RIB
916364CSAEM
$346.50
6"
AEM - 3 RING
916711-10AEM
$346.50
6"
AEM - 3 RING - 6-RIB
916731CSAEM
$346.50
Pricing reflects cost added to new damper.

AEM trigger shells WITH 6 rib serpentine drives are a $275 option. AEM Infinity style trigger shells do not work with BigStuff3 EFI.

How to order a custom Trigger Shell

In order to build a trigger shell correctly, you will need to provide the placement of the first magnet. This is NOT the degree of timing you want to run but rather the number at which the pick-up is pointing to when the TDC pointer is at the firing degree.

If you want to run 32° of timing, first rotate the engine to put the 32° mark at the TDC pointer. Then, move the pick-up to the center of its travel (so you will have room for adjustment either way) and indicate the number the pick-up is pointing to. This will be the placement of the first magnet. When the magnet comes around and meets the pick-up, the engine will fire at 32°.

Most EFI set ups require the signal to fire between 50° and 60°. (This may also be your “crank reference” number in your EFI software) This allows full travel within the timing map. In these cases, you will need to rotate the engine so that your specified number is at the TDC pointer. Where you tell us the pick-up is now pointing is where we will put the 1st magnet.

Most people use the commonly available pick-up brackets and run similar total timing numbers. ATI offers three stocking trigger shells for Chevrolet based engines on the most commonly requested marks.

 
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