Chevy Corvette V8 Pro Series Ready to Run Female Distributor with Mechanical Tach Drive

• Female terminal cap — mechanical tach drive for cable-driven Corvette tachometers

• Fits SBC Gen. I 262–400 and standard deck BBC 396–454 — tall deck not compatible

• External coil required (35,000V+) — tach output cable and advance kit included

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

The TSP Pro Series Ready-to-Run Distributor for the Chevy Corvette with Mechanical Tach Drive — Female Cap version — is functionally identical to the male terminal cap version (JM7715) in every respect: same engine fitment, same advance kit, same included components, same price. The sole difference is the terminal gender on the distributor cap. This unit features female terminal sockets that accept male-pin spark plug wire boots.

Terminal gender determines plug wire compatibility. Female terminal caps accept spark plug wires with male-pin boots. Male terminal caps accept spark plug wires with female-socket boots. Before ordering, confirm the terminal gender of your replacement or upgraded plug wire set. Using the wrong terminal gender requires adapters and is not recommended.

The mechanical tach drive provision on this distributor is required for cable-driven tachometers found in the Corvette C2 (1963–1967) and C3 (1968–1982). Without it, a cable-driven tachometer has no signal source and will not operate. If your vehicle uses an electronic tachometer signal rather than a physical tachometer cable, the standard TSP Pro Series distributor without tach drive is the correct and less expensive choice.

Engine fitment covers the complete Gen. I Chevrolet small block — 262 through 400 CID — and the standard-deck Mark IV big block — 396, 402, 427, and 454 CID — in carbureted applications. Three advance bushings and four advance springs are included for mechanical advance curve tuning. A vacuum advance block-off plate, tachometer output extension cable, power extension cable, and color-matched plug wire retainer are also included. External ignition coil required — 35,000V minimum, not included.

Female Cap vs. Male Cap — Which Version Do You Need?
This listing (JM7715F) and the companion listing (JM7715) are the same Pro Series Corvette tach drive distributor in every functional respect — same engine fitment, same specs, same advance kit, same price. The only difference is terminal gender on the distributor cap. Female terminals are recessed sockets on the cap that accept male-pin spark plug wire boots. Male terminals are protruding pins that insert into female-socket wire boots.

Before ordering, check the terminal type on the spark plug wire boots where they connect to the distributor cap, or verify the terminal gender of your replacement wire set. If the wire boots have a male pin that inserts into the cap, this female cap version (JM7715F) is correct. If the wire boots have a female socket that slides over a pin on the cap, the male terminal version (JM7715) is correct.

What This Distributor Does — Three Features in One Unit
This unit combines three capabilities that standard Pro Series and standard tach drive distributors provide separately:
One — the Pro Series Ready-to-Run design with external coil flexibility and advance curve tunability through the included three-bushing and four-spring advance kit. A vacuum advance block-off plate is included for performance builds preferring full mechanical advance control.
Two — the mechanical tach drive provision for cable-driven tachometers used in the Corvette C2 (1963–1967) and C3 (1968–1982) as standard equipment.
Three — a female terminal cap specifically for plug wire sets using male-pin boots.

What is the difference between this distributor and the male terminal cap version (JM7715R)?
These two distributors are identical in every functional respect—same engine fitment, same specifications, same advance kit, same included components, and same price. The only difference is the terminal gender on the distributor cap. This listing (JM7715FR) has female terminal sockets that accept male-pin spark plug wire boots. JM7715R 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.

How do I know if I need the female cap or male cap version?
Check the spark plug wire boots where they connect to the distributor cap on your existing setup, or check the specifications of the replacement plug wire set you plan to use. If the wire boots have a male pin that inserts into the 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 (JM7715R). If you're unsure, contact TSP with your plug wire set details and they can confirm the correct version.

What is the difference between this Pro Series tach drive distributor and the HEI tach drive distributor (JM6515R)?
Both distributors include the mechanical tach drive provision for cable-driven tachometers. The HEI version (JM6515R) integrates the ignition coil directly into the cap and requires only a single 12V wire, making it the simpler and lower-cost option. This Pro Series version 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. Choose the HEI for stock or mild street builds. Choose this Pro Series for modified builds where advance curve tuning matters.

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 Chevy engines, LS/Gen. III/Gen. IV engines, EFI, or computer-controlled ignition systems.

What Corvette years does this distributor fit?
This distributor fits the Corvette C2 (1963–1967) with 327 or 427 V8 engines and the Corvette C3 (1968–1982) with 350, 396, 427, or 454 V8 engines. All of these Corvette generations used cable-driven mechanical tachometers as standard equipment.

What is a mechanical tach drive and why does the Corvette need one?
A mechanical tach drive is a cable connection on the distributor housing that transmits RPM information to a cable-driven tachometer gauge. The Corvette C2 and C3 used cable-driven mechanical tachometers as standard equipment. Without this provision, the cable-driven tachometer has no signal source and will not function. If your vehicle uses an electronic tachometer with a wire connection rather than a cable, the standard Pro Series distributor without a tach drive is the correct choice.

Does this distributor also have an electronic tachometer output?
Yes. This distributor includes both the mechanical tach drive provision (for cable-driven tachometers) and a tachometer output extension cable (for electronic tachometer signal wiring). The two serve different types of tachometers.

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?
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 includes 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. The mechanical tach drive provision is built into the distributor housing.

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.