Buick Nailhead V8 HEI Distributor
The TSP HEI Distributor for the Buick Nailhead V8 is a self-contained large-cap HEI ignition upgrade covering the complete Nailhead family — 264 CID (4.3L), 322 CID (5.3L), 364 CID (6.0L), 401 CID (6.6L), and 425 CID (7.0L) — in carbureted applications across the full 1953–1966 Nailhead production era. The integrated HEI design combines the ignition coil, ignition module, cap, and rotor into a single unit, connecting to a single 12-volt source with no external coil, ignition box, or condenser required.
Counter-clockwise rotation: The Buick Nailhead V8 runs counter-clockwise distributor rotation — the opposite of most domestic V8 engines. This affects rotor phasing and spark plug wire routing and must be accounted for during installation. Do not assume standard clockwise plug wire layout. Verify your firing order and wire routing for counter-clockwise rotation before finalizing installation.
The 65,000-volt internal HEI coil delivers substantially stronger spark than a factory points-style distributor, supporting easier cold starts, cleaner idle quality, and more consistent ignition performance across the full RPM range. A magnetic pickup trigger replaces the mechanical points contact and requires no routine maintenance — a meaningful advantage on Nailhead engines where original ignition components are now sixty-plus years old. Both mechanical and vacuum advance are included, with a vacuum advance adjustment tool shipped with the distributor for advance curve tuning.
The Buick Nailhead powered the full range of Buick's lineup from 1953 through 1966 — from the Special, Century, Super, and Roadmaster of the 1950s to the LeSabre, Invicta, Electra, Wildcat, and first-generation Riviera of the early 1960s. Whether you are restoring a 1950s Buick, refreshing a 401-powered LeSabre or Invicta, or upgrading the ignition on a first-gen Riviera 425, this HEI distributor provides reliable ignition performance with minimal wiring complexity.
The Buick Nailhead V8 — Understanding the Engine and Why Ignition Accuracy Matters
The Buick Nailhead V8 is a distinct and iconic American engine produced exclusively by Buick from 1953 through 1966. It is not related to the Buick small block (215–350) or the later Buick big block (400–455) — it is its own engine family spanning five displacements across thirteen model years. Named for its characteristic small upright valves, the Nailhead powered some of Buick's most celebrated vehicles and became a fixture in American hot rod and custom culture, particularly in the 401 and 425 CID forms. Factory points-style ignition systems on these engines are now decades old and benefit significantly from an HEI upgrade — especially on engines that have been rebuilt, recarbureted, or modified for performance.
Performance Benefit
The 65,000-volt internal HEI coil fires spark plugs more consistently than a factory points setup across the full RPM range, delivering improvements in cold-start reliability, idle quality, and part-throttle drivability. The magnetic pickup trigger holds timing accurately without the wear and drift that accumulates with points contact over time. Both mechanical and vacuum advance are included, and the vacuum advance adjustment tool allows the vacuum curve to be tuned for your specific Nailhead combination and driving conditions.
COMPATIBLE WITH
BUICK NAILHEAD V8
• 4.3L / 264 in³
• 5.3L / 322 in³
• 6.0L / 364 in³
• 6.6L / 401 in³ (also known as 400)
• 7.0L / 425 in³
NOTES
• Fits Buick Nailhead V8 engines (264, 322, 364, 401/400, and 425) used in 1953–1966 applications.
• Not compatible with Buick small block V8 engines (215, 300, 340, 350).
• Not compatible with Buick big block V8 engines (400, 430, 455).
• Designed for carbureted ignition systems only.
• This distributor is designed for a 12 volt electrical system with an alternator.
• It is not compatible with a generator and cannot be used with a ballast resistor.
• Verify distributor gear compatibility with camshaft material before installation.
COMMON VEHICLE APPLICATIONS
Buick Special (264, 1954–1955; 322, 1956)
Buick Century (322, 1953–1956; 364, 1957–1958)
Buick Super (322, 1953–1956)
Buick Roadmaster (322, 1953–1956; 364, 1957–1958)
Buick Limited (364, 1958)
Buick LeSabre (364, 1959–1961; 401, 1962–1963)
Buick Invicta (401, 1959–1963)
Buick Electra / Electra 225 (401, 1959–1966)
Buick Wildcat (401/425, 1962–1966)
Buick Riviera (401/425, 1963–1966)
Buick Gran Sport / Skylark GS (401, 1965–1966)
SPECIFICATIONS
Trigger Type: Magnetic
Advance Type: Mechanical And Vacuum
Color: Available in Red, Black
Terminal Gender: Male
Mechanical Tach Drive: No
Slip Collar: No
Coil Included: Yes
Coil Type: Internal
Coil Output: 65000 V
Gear Material: Steel
Housing Material: Machined Aluminum
Ignition Box Required: No
Marine Use: No
Cylinders: 8
Vacuum Advance Adjustment Tool: Included
Installation Instructions: Included
Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
The TSP HEI Distributor for the Buick Nailhead V8 is a self-contained large-cap HEI ignition upgrade covering the complete Nailhead family — 264 CID (4.3L), 322 CID (5.3L), 364 CID (6.0L), 401 CID (6.6L), and 425 CID (7.0L) — in carbureted applications across the full 1953–1966 Nailhead production era. The integrated HEI design combines the ignition coil, ignition module, cap, and rotor into a single unit, connecting to a single 12-volt source with no external coil, ignition box, or condenser required.
Counter-clockwise rotation: The Buick Nailhead V8 runs counter-clockwise distributor rotation — the opposite of most domestic V8 engines. This affects rotor phasing and spark plug wire routing and must be accounted for during installation. Do not assume standard clockwise plug wire layout. Verify your firing order and wire routing for counter-clockwise rotation before finalizing installation.
The 65,000-volt internal HEI coil delivers substantially stronger spark than a factory points-style distributor, supporting easier cold starts, cleaner idle quality, and more consistent ignition performance across the full RPM range. A magnetic pickup trigger replaces the mechanical points contact and requires no routine maintenance — a meaningful advantage on Nailhead engines where original ignition components are now sixty-plus years old. Both mechanical and vacuum advance are included, with a vacuum advance adjustment tool shipped with the distributor for advance curve tuning.
The Buick Nailhead powered the full range of Buick's lineup from 1953 through 1966 — from the Special, Century, Super, and Roadmaster of the 1950s to the LeSabre, Invicta, Electra, Wildcat, and first-generation Riviera of the early 1960s. Whether you are restoring a 1950s Buick, refreshing a 401-powered LeSabre or Invicta, or upgrading the ignition on a first-gen Riviera 425, this HEI distributor provides reliable ignition performance with minimal wiring complexity.
The Buick Nailhead V8 — Understanding the Engine and Why Ignition Accuracy Matters
The Buick Nailhead V8 is a distinct and iconic American engine produced exclusively by Buick from 1953 through 1966. It is not related to the Buick small block (215–350) or the later Buick big block (400–455) — it is its own engine family spanning five displacements across thirteen model years. Named for its characteristic small upright valves, the Nailhead powered some of Buick's most celebrated vehicles and became a fixture in American hot rod and custom culture, particularly in the 401 and 425 CID forms. Factory points-style ignition systems on these engines are now decades old and benefit significantly from an HEI upgrade — especially on engines that have been rebuilt, recarbureted, or modified for performance.
Performance Benefit
The 65,000-volt internal HEI coil fires spark plugs more consistently than a factory points setup across the full RPM range, delivering improvements in cold-start reliability, idle quality, and part-throttle drivability. The magnetic pickup trigger holds timing accurately without the wear and drift that accumulates with points contact over time. Both mechanical and vacuum advance are included, and the vacuum advance adjustment tool allows the vacuum curve to be tuned for your specific Nailhead combination and driving conditions.
COMPATIBLE WITH
BUICK NAILHEAD V8
• 4.3L / 264 in³
• 5.3L / 322 in³
• 6.0L / 364 in³
• 6.6L / 401 in³ (also known as 400)
• 7.0L / 425 in³
NOTES
• Fits Buick Nailhead V8 engines (264, 322, 364, 401/400, and 425) used in 1953–1966 applications.
• Not compatible with Buick small block V8 engines (215, 300, 340, 350).
• Not compatible with Buick big block V8 engines (400, 430, 455).
• Designed for carbureted ignition systems only.
• This distributor is designed for a 12 volt electrical system with an alternator.
• It is not compatible with a generator and cannot be used with a ballast resistor.
• Verify distributor gear compatibility with camshaft material before installation.
COMMON VEHICLE APPLICATIONS
Buick Special (264, 1954–1955; 322, 1956)
Buick Century (322, 1953–1956; 364, 1957–1958)
Buick Super (322, 1953–1956)
Buick Roadmaster (322, 1953–1956; 364, 1957–1958)
Buick Limited (364, 1958)
Buick LeSabre (364, 1959–1961; 401, 1962–1963)
Buick Invicta (401, 1959–1963)
Buick Electra / Electra 225 (401, 1959–1966)
Buick Wildcat (401/425, 1962–1966)
Buick Riviera (401/425, 1963–1966)
Buick Gran Sport / Skylark GS (401, 1965–1966)
SPECIFICATIONS
Trigger Type: Magnetic
Advance Type: Mechanical And Vacuum
Color: Available in Red, Black
Terminal Gender: Male
Mechanical Tach Drive: No
Slip Collar: No
Coil Included: Yes
Coil Type: Internal
Coil Output: 65000 V
Gear Material: Steel
Housing Material: Machined Aluminum
Ignition Box Required: No
Marine Use: No
Cylinders: 8
Vacuum Advance Adjustment Tool: Included
Installation Instructions: Included
