As seen on

Davis Unified Ignition

Distributor, DUI, Street/Strip, Carbureted LS Engines, HEI

ooooo

0 Reviews

Free Shipping!

Part# : CH33776

Mfg#: DUI-31820-LSBK

Sold As: Each

Ship Size:

^$479.⁹⁹

List Price: $528.95

You Save $48.96

Color

Color Variation

Due to variations in monitor settings, some colors on this page may appear slightly different from GM originals. In addition, due to color differences in the original GM dye lots, interior product colors may vary slightly.

Vehicle Specific View fitment for 30 models

Add To Wishlist

Details
Fitment
Reviews (0)

Carbureted LS Street/Strip HEI Distributor by Davis Unified Ignition®

Coil-in-cap ignition and a calibrated advance curve combine in a self-contained HEI assembly.

This Davis Unified Ignition® Street/Strip distributor combines a coil-in-cap HEI layout with a Dyna-Module, so no external coil or ignition box is needed. The module extends coil dwell to support a longer-duration spark. Hand-fitted advance weights and springs are calibrated on a distributor machine for the engine combination, while vacuum advance adds timing during light-load operation. Brass cap terminals conduct ignition current and resist corrosion. Installation uses a full 12-volt ignition feed; the advance curve and spark-plug gap must suit the engine rather than relying on a universal setting. This version is for a carbureted LS distributor conversion, not a stock coil-near-plug installation.

• Carbureted LS distributor-conversion application (See full fitment list below) • 50,000-volt coil and Dyna-Module are integrated into the HEI assembly • Mechanical and vacuum advance; engine-matched calibration • Brass distributor-cap terminals resist corrosion • One 12-volt ignition feed; no external ignition box or coil • Manufacturer permits gaps up to 0.055 inch when appropriate for the engine

Notes

This item is not eligible for any further discounts or promotional pricing.

This product is not legal for street use on an emissions-controlled vehicle. It may be used on dedicated competition or pre-pollution-controlled vehicles only. Learn More

We aim to provide accurate and complete product information. If you notice anything incorrect, missing, or unclear, please let us know.

Report Incorrect Product Information

WARNING: This product can expose you to chemicals including lead, sulfur, nickel, chromium, vanadium, titanium, polyvinyl chloride, and 4,4’-methylenebis (2-chloroaniline), which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Vehicle Fitment

Year Make Model	Application Details
1982 Buick Grand National	carbureted LS engines
1982 Buick Grand National	1984–1987 Buick Grand National	carbureted LS engines
1978–1987 Buick Regal	1984–1987 Buick Grand National	carbureted LS engines
1963–1976 Buick Riviera	carbureted LS engines
1961–1972 Buick Skylark	carbureted LS engines
1983–1986 Buick T-Type	carbureted LS engines
1938–1993 Cadillac 60 Special	carbureted LS engines
1965–1976 Cadillac Calais	carbureted LS engines
1959–1993 Cadillac DeVille	carbureted LS engines
1953–1993 Cadillac Eldorado	carbureted LS engines
1936–1951 Cadillac Series 60	carbureted LS engines
1936–1951 Cadillac Series 61	carbureted LS engines
1937–1976 Cadillac Series 62	carbureted LS engines
1936–1951 Cadillac Series 63	carbureted LS engines
1937–1938 Cadillac Series 65	carbureted LS engines
1936–1942 Cadillac Series 67	carbureted LS engines
1936–1937 Cadillac Series 70	carbureted LS engines
1940 Cadillac Series 72	carbureted LS engines
1936–1942 Cadillac Series 75	carbureted LS engines
1936–1942 Cadillac Series 75	1946–1964 Cadillac Series 75	carbureted LS engines
1976–1993 Cadillac Seville	1946–1964 Cadillac Series 75	carbureted LS engines
1964–1977 Chevrolet Chevelle	carbureted LS engines
1964–1987 Chevrolet El Camino	1964–1977: carbureted LS engines
1964–1987 Chevrolet El Camino	1978–1987: carbureted LS engines
1978–1983 Chevrolet Malibu	carbureted LS engines
1970–1988 Chevrolet Monte Carlo	1970–1977: carbureted LS engines
1970–1988 Chevrolet Monte Carlo	1978–1988: carbureted LS engines
1961–1988 Oldsmobile Cutlass	1961–1977: carbureted LS engines
1961–1988 Oldsmobile Cutlass	1978–1988: carbureted LS engines
1959–1976 Pontiac Bonneville	carbureted LS engines
1959–1976 Pontiac Bonneville	1978–1986 Pontiac Bonneville	carbureted LS engines
1959–1976 Pontiac Catalina	1978–1986 Pontiac Bonneville	carbureted LS engines
1962–1976 Pontiac Grand Prix	carbureted LS engines
1962–1976 Pontiac Grand Prix	1978–1987 Pontiac Grand Prix	carbureted LS engines
1964–1973 Pontiac GTO	1978–1987 Pontiac Grand Prix	carbureted LS engines
1961–1973 Pontiac LeMans	carbureted LS engines
1961–1970 Pontiac Tempest	carbureted LS engines

Need help finding the right GM restoration parts? Contact a GM Parts Specialist
Chat Unknown Status Call Toll-Free

Mon–Fri 8:00–4:30 PT
Sat 10:00–3:00 PT
GM Parts Specialist Offline
Price Match Guarantee Great parts. Competitive prices. Guaranteed.
GM Restoration Experts Since 1982 Over four decades dedicated to GM restoration
Original GM Is Our Standard Original GM parts and factory references guide every reproduction
A Deeper GM Selection Thousands of restoration, performance, and replacement parts

Customers Who Viewed This Item Also Viewed