Buick Small Block V8 Pro Series Ready to Run Distributor

• Fits Buick small block 215, 300, 340, and 350 V8 — and 1970–1974 Range Rover 3.5L V8

• External coil required (35,000V+) — no ignition box needed, tach output cable included

• Tunable advance curve — 3 bushings, 4 springs, vacuum block-off plate included

• Clockwise rotation — machined aluminum housing, steel distributor gear

The TSP Pro Series Ready-to-Run Distributor for the Buick small block V8 delivers precise, adjustable ignition performance across the full Buick small block family — 215 CID (3.5L), 300 CID (4.9L), 340 CID (5.6L), and 350 CID (5.7L) — in carbureted applications. It also fits the 1970–1974 Range Rover equipped with the Rover 3.5L V8, which shares its foundational architecture with the Buick 215 aluminum V8. Built on a machined aluminum housing with a circuit board module and magnetic pickup trigger, this distributor delivers accurate, repeatable ignition timing without points, condenser, or a separate ignition control box.

Unlike the TSP Buick small block HEI distributor, the Pro Series uses an external ignition coil — giving you the flexibility to select a coil matched to your specific build — while the internal ignition module eliminates the need for a separate ignition control box or CDI unit. A minimum coil output of 35,000 volts is required — coil is not included. Distributor rotation is clockwise, consistent with standard Buick small block architecture.

Three advance bushings and four advance springs are included, allowing the mechanical advance curve to be tailored to your engine's camshaft profile, compression ratio, and carburetor calibration — a meaningful advantage over the fixed advance curve of a stock points or basic HEI setup. A vacuum advance block-off plate is included for performance and race applications where vacuum advance is not needed. A tachometer output extension cable is included for straightforward aftermarket tach wiring.

Why Choose the Pro Series Over the Buick Small Block HEI?
The TSP Buick small block HEI distributor is the simpler option — integrated coil, single 12V wire, direct-fit replacement for street and restoration builds. The Pro Series Ready-to-Run is the step up for builders who need more control. The external coil setup lets you run a coil matched to your ignition system and build level. The included advance tuning kit — three bushings and four advance springs — allows the mechanical advance curve to be dialed in for your specific engine rather than running a fixed factory-style ramp. A vacuum advance block-off plate is included for performance builds where vacuum advance is not wanted. For a stock rebuild or basic ignition refresh, the HEI is the right call. For a modified engine, a performance carburetor, or any build where advance curve behavior matters, the Pro Series delivers what the HEI cannot.

Performance Benefit
The circuit board module and magnetic pickup trigger deliver precise, repeatable spark timing without the wear and drift that accumulates in points-based systems. Three advance bushings and four advance springs allow full adjustment of the mechanical advance curve — how quickly timing comes in with rising RPM — which is particularly valuable on Buick small block builds running aftermarket camshafts, elevated compression ratios, or performance carburetors. A vacuum advance block-off plate gives race and dedicated performance builds the option to run full mechanical advance control only. A tachometer output extension cable is included to simplify aftermarket tach wiring without additional adapters.

What engines does this distributor fit?
This distributor fits the full Buick small block V8 family — 215 CID (3.5L), 300 CID (4.9L), 340 CID (5.6L), and 350 CID (5.7L) — in carbureted applications. It also fits the 1970–1974 Range Rover equipped with the Rover 3.5L V8, which shares its foundational architecture with the Buick 215 aluminum V8. Important: the 215 and 300 CID may require an aftermarket intake manifold for proper distributor clearance. Verify with TSP before ordering for these displacements. The 340 and 350 CID are direct-fit applications.

What is the difference between this Pro Series distributor and the TSP Buick small block HEI distributor?
The HEI distributor integrates the ignition coil directly into the distributor cap, connects to a single 12V wire, and requires no external coil, making it the simpler, lower-cost option for street and restoration builds. The Pro Series Ready-to-Run requires an external ignition coil (35,000V minimum, not included) but includes three advance bushings, four advance springs, a vacuum advance block-off plate, and a tachometer output extension cable for greater advance curve tunability. Choose the HEI for a straightforward ignition upgrade. Choose the Pro Series for performance builds where tailoring the mechanical advance curve to your specific engine combination matters.

Why won't this distributor fit the Buick 215 or 300 with a stock intake manifold?
The 215 CID and 300 CID Buick small block engines have a distributor location that may be partially obstructed by the stock intake manifold, preventing the distributor from seating correctly. An aftermarket intake manifold with proper distributor clearance may be required. Confirm with TSP before ordering if your application uses a 215 or 300 CID with a stock intake. The 340 and 350 CID do not have this clearance issue and are direct-fit.

Does this distributor fit the Rover 3.5L V8 or Land Rover?
This distributor is confirmed to fit the 1970–1974 Range Rover equipped with the Rover 3.5L (215 CID) V8, which is derived from the original Buick 215 aluminum V8. For Rover V8 applications beyond the 1970–1974 Range Rover, contact TSP directly to verify fitment for your specific year and model before ordering.

Does this distributor include a coil?
No. This is a Ready-to-Run design that requires an external ignition coil rated at 35,000 volts or higher. The coil is not included and must be sourced separately.

Do I need an external ignition box or CDI unit?
No. The internal ignition module handles all ignition control. No external ignition box, CDI unit, points, or condenser is required.

What is included with this distributor?
This distributor ships with three advance bushings and four advance springs for mechanical advance curve tuning, a color-matched spark plug wire retainer with screws, a vacuum advance block-off plate in black, a power extension cable, and a tachometer output extension cable.

Can I tune the advance curve on this distributor?
Yes. Three advance bushings and four advance springs are included, allowing adjustment of how quickly mechanical advance comes in with rising RPM. This is particularly valuable on Buick small block builds running aftermarket camshafts, higher compression, or performance carburetors where a stock-style advance curve does not optimize the engine's potential.

What direction does this distributor rotate?
This distributor rotates clockwise, consistent with standard Buick small block V8 architecture. Note that the Buick Nailhead V8 runs counter-clockwise rotation and requires a completely different distributor.

Does this distributor have a tachometer output?
Yes. A tachometer output extension cable is included for connecting an aftermarket electronic tachometer without a separate signal adapter. This distributor does not include a mechanical tachometer drive.

Will this fit a Buick GS or Gran Sport?
Yes, for GS models equipped with small block engines—the GS 340 (1967) and GS 350 / Skylark GS (1968–1972). GS models equipped with the big block 400 or 455 (GS 400, GS 455, GSX) require the TSP Buick big block distributor, not this unit.

Will this fit a Buick Skylark?
Yes, for Skylark models equipped with the Buick small block—215 CID (1961–1963), 300 CID (1964–1965), 340 CID (1966–1967), or 350 CID (1968–1972). Skylark models from 1967–1972 equipped with big block engines (400 or 455 CID) require the TSP Buick big block distributor. Always verify your engine displacement before ordering.

What type of distributor gear is included, and what camshafts is it compatible with?
This distributor includes a steel distributor gear. The gear is most compatible with cast iron hydraulic or solid flat tappet camshafts. For roller camshaft applications, consult your camshaft manufacturer for the recommended gear material before installation.

Do I need to set ignition timing after installing this distributor?
Yes. Base ignition timing must be set with a timing light after installation. For most carbureted Buick 350 small block applications, a starting point of 12–16 degrees BTDC at idle is a common reference, though the optimal setting will vary based on your compression ratio, camshaft profile, advance spring and bushing selection, and carburetor tune.

Is this distributor compatible with a 6-volt system or generator?
No. This distributor requires a 12-volt electrical system with a charging alternator. It is not compatible with 6-volt systems, generators, or ballast resistors.