MSD Ignition Flying Magnet Crank Trigger Kit Big Block Chevy [Red]
121-8620






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Big Block Chevy
MSD's Flying Magnet Crank Trigger system stabilizes ignition timing.
Features:
- Sensor Dimensions: 3/4 (.750) in. x 2 1/4 (.250) in.
- Non-Magnetic Sensor
- 4X Trigger
- 3/8 (.375) in. Wheel Width
Note: Not legal for sale or use on pollution-controlled vehicles.
Specifications:
Stable ignition timing is a necessity in performance engines. In most cases, a distributor will do just fine, but when you start making big-time horsepower with extreme cylinder pressures, the timing is critical to both the performance and the life of the engine. MSD uses a non-magnetic pickup which gets triggered by powerful magnets that are embedded in the trigger wheel. This ''flying magnet'' design cannot be false triggered. The only way to trigger the ignition is when a magnet passes the pickup. The sensor brackets feature a long adjustment slot providing a large range of accurate timing adjustments. Plus, many of the brackets can be used on either side of the balancer for easy installation. Most kits are supplied with several spacers for different accessories and pulley systems. The timing wheel is also machined out of 6061-T6 aluminum and anodized MSD Red. Kits include mounting brackets, trigger wheel, non-magnetic pickup, centering ring and mounting hardware. Notes:The Best Way to Trigger Your Ignition
Does MSD Ignition 8620 fit your vehicle?
1978 CHEVROLET C20 SUBURBAN
- Liter: 7.4
- SubModel: CUSTOM DELUXE
- Aspiration: NATURALLY ASPIRATED
- Fitment Notes: 8 in. Balancer; Not Legal For Sale Or Use On Pollution Controlled Vehicles~ This part is legal for sale or use on Racing Use Only Vehicles~ WARNING: It is against the law to install this part on an Emissions Controlled Vehicle~ The following vehicles are considered Racing Use Only Vehicles: Racing Use Only Vehicles are vehicles that are used exclusively for competition that are not registered and that may never be used on the street
- CUI: 454
- Engine Type: V8 ( 7.4L / 454 )
- Engine Vin: S
1985 GMC K3500
- Liter: 7.4
- SubModel: HIGH SIERRA
- Aspiration: NATURALLY ASPIRATED
- Fitment Notes: 8 in. Balancer; Not Legal For Sale Or Use On Pollution Controlled Vehicles
- CUI: 454
- Engine Type: V8 ( 7.4L / 454 )
- Engine Vin: W
1982 CHEVROLET C30
- Liter: 7.4
- SubModel: CUSTOM
- Aspiration: NATURALLY ASPIRATED
- Fitment Notes: 8 in. Balancer; Not Legal For Sale Or Use On Pollution Controlled Vehicles~ This part is legal for sale or use on Racing Use Only Vehicles~ WARNING: It is against the law to install this part on an Emissions Controlled Vehicle~ The following vehicles are considered Racing Use Only Vehicles: Racing Use Only Vehicles are vehicles that are used exclusively for competition that are not registered and that may never be used on the street
- CUI: 454
- Engine Type: V8 ( 7.4L / 454 )
- Engine Vin: W
1975 GMC G25
- Liter: 7.4
- SubModel: RALLY STX
- Aspiration: NATURALLY ASPIRATED
- Fitment Notes: 8 in. Balancer; Not Legal For Sale Or Use On Pollution Controlled Vehicles
- CUI: 454
- Engine Type: V8 ( 7.4L / 454 )
- Engine Vin: Z
1978 GMC C15
- Liter: 7.4
- SubModel: HEAVY HALF
- Aspiration: NATURALLY ASPIRATED
- Fitment Notes: 8 in. Balancer; Not Legal For Sale Or Use On Pollution Controlled Vehicles
- CUI: 454
- Engine Type: V8 ( 7.4L / 454 )
- Engine Vin: S
1988 CHEVROLET V30
- Liter: 7.4
- SubModel: CHEYENNE
- Aspiration: NATURALLY ASPIRATED
- Fitment Notes: 8 in. Balancer; Not Legal For Sale Or Use On Pollution Controlled Vehicles~ This part is legal for sale or use on Racing Use Only Vehicles~ WARNING: It is against the law to install this part on an Emissions Controlled Vehicle~ The following vehicles are considered Racing Use Only Vehicles: Racing Use Only Vehicles are vehicles that are used exclusively for competition that are not registered and that may never be used on the street
- CUI: 454
- Engine Type: V8 ( 7.4L / 454 )
- Engine Vin: W
1977 CHEVROLET K20
- Liter: 7.4
- SubModel: CUSTOM DELUXE
- Aspiration: NATURALLY ASPIRATED
- Fitment Notes: 8 in. Balancer; Not Legal For Sale Or Use On Pollution Controlled Vehicles
- CUI: 454
- Engine Type: V8 ( 7.4L / 454 )
- Engine Vin: S
1980 GMC C1500 SUBURBAN
- Liter: 7.4
- SubModel: HIGH SIERRA
- Aspiration: NATURALLY ASPIRATED
- Fitment Notes: 8 in. Balancer; Not Legal For Sale Or Use On Pollution Controlled Vehicles~ This part is legal for sale or use on Racing Use Only Vehicles~ WARNING: It is against the law to install this part on an Emissions Controlled Vehicle~ The following vehicles are considered Racing Use Only Vehicles: Racing Use Only Vehicles are vehicles that are used exclusively for competition that are not registered and that may never be used on the street
- CUI: 454
- Engine Type: V8 ( 7.4L / 454 )
- Engine Vin: W
1980 CHEVROLET K10
- Liter: 7.4
- SubModel: SILVERADO
- Aspiration: NATURALLY ASPIRATED
- Fitment Notes: 8 in. Balancer; Not Legal For Sale Or Use On Pollution Controlled Vehicles
- CUI: 454
- Engine Type: V8 ( 7.4L / 454 )
- Engine Vin: W
1985 CHEVROLET K30
- Liter: 7.4
- SubModel: SCOTTSDALE
- Aspiration: NATURALLY ASPIRATED
- Fitment Notes: 8 in. Balancer; Not Legal For Sale Or Use On Pollution Controlled Vehicles~ This part is legal for sale or use on Racing Use Only Vehicles~ WARNING: It is against the law to install this part on an Emissions Controlled Vehicle~ The following vehicles are considered Racing Use Only Vehicles: Racing Use Only Vehicles are vehicles that are used exclusively for competition that are not registered and that may never be used on the street
- CUI: 454
- Engine Type: V8 ( 7.4L / 454 )
- Engine Vin: W
1975 CHEVROLET IMPALA
- Liter: 7.4
- SubModel: CUSTOM
- Aspiration: NATURALLY ASPIRATED
- Fitment Notes: 8 in. Balancer; Not Legal For Sale Or Use On Pollution Controlled Vehicles~ This part is legal for sale or use on Racing Use Only Vehicles~ WARNING: It is against the law to install this part on an Emissions Controlled Vehicle~ The following vehicles are considered Racing Use Only Vehicles: Racing Use Only Vehicles are vehicles that are used exclusively for competition that are not registered and that may never be used on the street
- CUI: 454
- Engine Type: V8 ( 7.4L / 454 )
- Engine Vin: Y
1987 GMC V3500
- Liter: 7.4
- SubModel: HIGH SIERRA
- Aspiration: NATURALLY ASPIRATED
- Fitment Notes: 8 in. Balancer; Not Legal For Sale Or Use On Pollution Controlled Vehicles
- CUI: 454
- Engine Type: V8 ( 7.4L / 454 )
- Engine Vin: W
Does this crank trigger need a special distributor or can I use my msd distributor
Motor Vehicles
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