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Vehicle Info NeededMSD IGNITIONPART NUMBER: 121-8486
Crank Trigger Distributor Chevy V8 Super Tall Block
$46695$519.95You Save$53.00
Ships on Sep 15, 2026
Lowest Price GuaranteeChevy w/Crab Cap HEI-Style
- Crank Trigger Distributor
- Chevy V8 Super Tall Block
- With Crab Cap
Built for racing engines and equipped with a special low-profile crab style distributor cap. Features: - Designed to fit low in the block to clear firewall and intake combinations
- Adjustable slip collar for engines with modified deck heights
- 0.500" taller for extra tall Chevrolet based engine blocks
- Special oil tract improves lubrication to the distributor and cam gear
- O-ring seals can be added to modified blocks to improve oil pressure control
- Supplied with small, low crab style distributor cap, rotor and bronze gear
- Must be used with an MSD Crank Trigger and MSD 6, 7 or 8-Series Ignition Control Note: Not legal for sale or use on pollution-controlled vehicles.
- Designed to fit low in the block to clear firewall and intake combinations
- Must be used with an MSD Crank Trigger and MSD Ignition Control
- Supplied with small, low crab style distributor cap, rotor and bronze gear
- O-ring seals can be added to modified blocks to improve oil pressure control
- Special oil tract improves lubrication to the distributor and cam gear
- Shaft is guided by a sealed ball bearing and an extra long sintered bushing
- Oversized polished steel shaft with a QPQ coating for friction reduction
Part TypeDistributor
BrandMSD IGNITION
Package Height6.8
Package Width7.0
Package Length19.0
Weight4.12 PG
Part CategoryPerformance Parts
Marine UseNo
Housing FinishNatural
Housing Materialbillet aluminum
Ignition Box RequiredYes
QuantitySold individually
Distributor TypeCrank Type w/Mech. Tach Drive
Engine Make/SizeChevy Small Block (262-400)
Computer-Controlled CompatibleNo
Trigger StyleCrank trigger
Distributor Gear RotationStandard
Cap StyleMale/HEI
Part FitmentSemi Universal
Slip CollarYes
Mechanical Tach DriveNo
Gear MaterialBronze
Advance TypeNone
Vendor Part Number8486
Package Qty1
Package TypeEA
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Some parts are not legal for use in California or other states with similar laws / regulations
