Chevy SBC/BBC V8 Small Cap Ready-to-Run Distributor with Female Cap

• Female cap — classic points-style look with small cap Hall Effect electronics inside

• Small cap design — fits tight engine bays where large HEI caps won't clear firewall

• Fits SBC Gen. I 262–400 and standard deck BBC 396, 402, 427, and 454 — carbureted

• External coil required (35,000V+) — no ignition box needed, mechanical and vacuum advance

The TSP Small Cap Ready-to-Run Distributor with Female Cap for the Chevy SBC and BBC combines the compact small cap design and Hall Effect trigger of the JM6701 with a female terminal cap — the socket-style connector widely known in the vintage Chevrolet community as a "points-style cap" for its visual resemblance to a traditional points-era distributor. For builders restoring a 1955–1957 Chevrolet, early Camaro, or other vintage build to a stock-appearance underhood while running fully electronic ignition, this is the correct unit — modern Hall Effect electronics inside, classic points-style cap outside.

Engine fitment covers the complete Gen. I Chevrolet small block V8 (262–400 CID) and the standard-deck Mark IV big block V8 (396, 402, 427, and 454 CID) in carbureted applications. The small cap design fits engine bays where a large-cap HEI distributor would interfere with the firewall, air cleaner, or other components — a documented issue in pre-1975 cars and trucks where the compact cap footprint clears the firewall without body or accessory modifications.

Female terminals require matching plug wires. The female cap sockets accept male-pin spark plug wire boots. Verify your replacement or upgraded plug wire set uses male-pin boots before ordering. If your wire set uses female-socket boots, the male terminal cap version (JM6701) is the correct choice.

The multi-pole Hall Effect reluctor trigger provides a precise, maintenance-free electronic ignition signal with no points, no condenser, and no routine contact maintenance. An external ignition coil rated at 35,000 volts or higher is required — coil is not included. No separate ignition control box or CDI unit is needed.

Female Cap vs. Male Cap — Which Version Do You Need?
This listing (JM6701F) and the companion listing (JM6701) are the same small cap Ready-to-Run distributor in every functional respect — same engine fitment, same Hall Effect trigger, same specs, same price. The only difference is terminal gender on the distributor cap.

Female terminals (this listing) are recessed sockets that accept male-pin spark plug wire boots. Male terminals (JM6701) are protruding pins that insert into female-socket wire boots. Before ordering, check the terminal type on your existing or replacement spark plug wires. If the wire boots have a male pin that inserts into the cap, this female cap version is correct. If the wire boots have a female socket that slides over a pin on the cap, the male terminal version (JM6701) is correct.

The Points-Style Cap Look
The female terminal cap on a small cap distributor is widely known among vintage Chevrolet builders as a "points-style cap" — the female socket design closely resembles the appearance of the traditional points-era distributor caps used in 1950s and 1960s Chevrolet V8 engines. For concours-oriented restoration builds and engine bays where a stock-look underhood is a priority, the female cap version provides that classic appearance while running fully modern Hall Effect electronic ignition inside the housing. You get the look of a period-correct distributor cap with none of the maintenance of a points system.

Why the Small Cap Matters
The small cap design is the other key advantage of both the male and female versions of this distributor. In many pre-1975 builds — particularly 1955–1957 Chevrolets, early Camaros, and other applications where the engine sits close to the firewall — the large cap of an HEI distributor physically contacts the firewall or cowl and requires modification to fit. The small cap footprint of this unit clears those spaces cleanly without body modifications.

What is the difference between this distributor and the male cap version (JM6701)?
These two distributors are identical in every functional respect—same small cap design, same Hall Effect trigger, same engine fitment, same specifications, and same price. The only difference is the terminal gender on the distributor cap. This listing (JM6701F) has female terminal sockets that accept male-pin spark plug wire boots. JM6701 has male terminal pins that insert into female-socket plug wire boots. Verify your plug wire terminal gender before ordering to ensure you select the correct version.

What is a "points-style cap" and why would I want one?
The female terminal socket cap on a small cap distributor is commonly called a "points-style cap" because its socket design closely resembles the appearance of traditional points-era distributor caps used on 1950s and 1960s Chevrolet V8 engines. For restoration builders who want a stock underhood appearance while running modern electronic ignition, the female cap provides that classic points-style look with Hall Effect electronics inside. If OEM appearance is not a priority, the male terminal version (JM6701R) is functionally equivalent.

How do I know if I need the female cap or male cap version?
Check the terminal type on your existing or replacement spark plug wires. If the wire boots have a male pin that inserts into the distributor cap, you need this female cap version. If the wire boots have a female socket that slides over a pin on the cap, you need the male terminal version (JM6701). If you're unsure, contact TSP with your spark plug wire set information for confirmation.

What makes this distributor different from the large-cap HEI and Pro Series?
Three key features distinguish this unit. First is the small cap design, which is significantly more compact than a large-cap HEI and is intended for tight engine bays and pre-1975 applications where a large HEI cap contacts the firewall. Second are the female terminals, which provide a traditional points-style cap appearance. Third, this distributor requires an external coil (no integrated coil) and does not include the advance tuning kit or tachometer output found on the Pro Series. For a simple single-wire installation with an integrated coil, see the HEI (JM6501). For advance curve tuning with bushings and springs, see the Pro Series (JM7715).

What engines does this distributor fit?
This distributor fits the Chevrolet Gen. I small block V8—262, 265, 267, 283, 302, 305, 307, 327, 350, and 400 CID—and the standard-deck Mark IV big block—396, 402, 427, and 454 CID—in carbureted applications. It is not compatible with tall-deck big block engines, governor-equipped applications, LS engines, or EFI and computer-controlled ignition systems.

Why is the small cap important for pre-1975 Chevrolet builds?
In many pre-1975 cars and trucks—particularly 1955–1957 Chevrolets and early Camaros—the engine sits close to the firewall, leaving insufficient clearance for the large cap of an HEI distributor. Installing a large-cap HEI in these applications typically requires modifying the firewall or relocating components to create clearance. The small cap on this distributor eliminates that problem, fitting these tight engine bays without body or accessory modifications.

Does this distributor require an external coil?
Yes. This is a Ready-to-Run design with no integrated coil. An external ignition coil rated at 35,000 volts or higher is required and must be sourced separately.

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

What is a Hall Effect trigger?
A Hall Effect sensor is a semiconductor-based trigger that generates a precise square-wave signal in response to changes in a magnetic field from a rotating multi-pole reluctor wheel. Compared to a traditional single-pole magnetic reluctor, the multi-pole Hall Effect design provides a cleaner, higher-resolution trigger signal, particularly at low RPM and during cold starts. It requires no routine maintenance and is more durable than a magnetic pickup over the life of the distributor.

What type of distributor gear is included?
This distributor includes a steel distributor gear. It 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.

Is this 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.

Do I need to set ignition timing after installation?
Yes. Set base ignition timing with a timing light after installation. For most carbureted SBC 350 applications, 8–12 degrees BTDC at idle is a common starting reference. Optimal timing varies by compression ratio, camshaft profile, and carburetor tune.