1966-1967 Cadillac 429 Pro Series Ready to Run Distributor

• Fits 1966–1967 Cadillac 429 V8 and 390 V8 — Pro Series, no ignition box needed

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

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

• Fits DeVille, Calais, Eldorado, Fleetwood, and Commercial Chassis — 1966–1967 only

The TSP Pro Series Ready-to-Run Distributor for the 1966–1967 Cadillac V8 is a precision ignition upgrade for carbureted 429 CID (7.0L) Cadillac applications from the 1966 and 1967 model years only. Built on a machined aluminum housing with a circuit board module and magnetic pickup trigger, this distributor provides accurate, repeatable ignition timing without the need for points, condenser, or a separate ignition control box.

The 1966–1967 Cadillac 429 powered the full Cadillac lineup in its final two production years before being replaced by the all-new 472 CID V8 in 1968 — covering the DeVille, Calais, Fleetwood, Eldorado, and Commercial Chassis. This is a specialized distributor for a specific two-year production window. Buyers with 1964–1965 Cadillac 429 applications should confirm compatibility with TSP before ordering, as the distributor architecture may differ between early and late 429 production years.

The Pro Series design uses an external ignition coil, giving you flexibility to run a coil matched to your build level. A minimum coil output of 35,000 volts is required — coil is not included. Three advance bushings and four advance springs are included, allowing the mechanical advance curve to be tuned for your engine's camshaft profile, compression ratio, and carburetor calibration. A vacuum advance block-off plate is included for performance builds where vacuum advance is not desired. A tachometer output extension cable is included for straightforward aftermarket tach wiring.

A Specialized Distributor for the Final Cadillac 429 Era
The Cadillac 429 CID V8 was produced from 1964 through 1967, powering the full Cadillac lineup before giving way to the new 472 CID architecture introduced in 1968. This Pro Series distributor is specifically engineered for the 1966–1967 production window of the 429 CID application. It is not a universal fit across all Cadillac 429 model years — buyers with 1964–1965 Cadillac 429 applications should verify compatibility with TSP before ordering. If you have a 1968 or later Cadillac, the TSP Cadillac 472/500 Pro Series distributor is the correct unit for your application.

The Pro Series Ready-to-Run replaces the entire factory points and condenser system with a circuit board module and magnetic pickup trigger that holds timing accurately without routine maintenance. For 1966–1967 Cadillac applications where original ignition components are now nearly sixty years old, this is a significant reliability and performance upgrade.

Performance Benefit
The circuit board module and magnetic pickup trigger deliver precise, repeatable spark timing without the wear and drift inherent in aging points-based systems. Three advance bushings and four advance springs allow full adjustment of the mechanical advance curve — how quickly timing advances with rising RPM — which is particularly valuable on modified builds running aftermarket camshafts, higher compression ratios, or performance carburetors. A vacuum advance block-off plate is included for performance applications where full mechanical advance control is preferred. A tachometer output extension cable is included to simplify aftermarket tach wiring.

What is the only confirmed engine fitment for this distributor?
This distributor is confirmed for the Cadillac 429 CID (7.0L) V8 in 1966–1967 carbureted applications only. It is not confirmed for the 390 CID, 331 CID, 365 CID, or any 1964–1965 Cadillac 429 application. For 1968 and later Cadillac V8 applications, see the TSP Cadillac 472/500 Pro Series Ready-to-Run distributor.

Will this fit my 1964 or 1965 Cadillac with a 429 V8?
This distributor is confirmed for 1966–1967 Cadillac 429 applications only. The 429 CID was produced from 1964 through 1967, but there may be a distributor design difference between the 1964–1965 and 1966–1967 production years. Contact TSP directly to confirm compatibility for your specific 1964 or 1965 application before ordering.

I have a 1968 or later Cadillac — will this fit?
No. Cadillac introduced the all-new 472 CID V8 in 1968, replacing the 429. For 1968 and later Cadillac applications, the correct unit is the TSP Cadillac 472/500 Pro Series Ready-to-Run distributor, which covers the 368, 425, 472, and 500 CID Cadillac V8 engines from 1968 through 1984.

Does this distributor fit the Cadillac 331 or 365 CID V8?
The 331 and 365 CID appear in the product feature listing but are not confirmed in the engine fitment section. The 331 was produced from 1949 to 1955 and the 365 from 1956 to 1958. Contact TSP directly to confirm compatibility for these earlier engines 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 the mechanical advance comes in with rising RPM. This is particularly useful on modified 1966–1967 Cadillac 429 builds running aftermarket camshafts, elevated compression, or performance carburetors where a stock-style advance curve is not optimal.

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, as a mismatched gear and cam combination will cause accelerated wear on both components.

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.

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. Some early Cadillac vehicles were factory 6-volt, so confirm your vehicle has been converted to a 12-volt alternator system before ordering.