1966 Chevrolet Chevelle Convertible – SS 427 Tribute
Experience classic American muscle with this stunning 1966 Chevrolet Chevelle Convertible SS ZZ427 Tribute. Finished in a beautiful Rally Red exterior finish complemented by a stunning Black interior, this iconic ride has been Crafted for performance, highway Touring and Posing.
Chevrolet ZZ427/480 Crate Engine Breakdown
The ZZ427/480 (part number 19331572 or 19166393) is a late-model Chevrolet Performance crate engine, often referred to as a "ZZ" series big-block. It's designed as a modern tribute to the classic 1960s L88 427, blending high performance with improved street-friendliness and reliability. This engine uses a cast-iron block with aluminum GM oval-port heads for better heat dissipation and weight savings (total dry weight around 575 lbs). It's rated at 480 hp and 490 lb-ft, runs on premium pump gas (10.1:1 compression), and is suitable for classic muscle car restorations, hot rods, or custom builds. It comes partially assembled as a long block,
Key Specifications:
Here's a detailed overview based on official GM specs:
Displacement: 427 cu in (7.0L)
Engine Type: Gen IV Big-Block V8
Bore x Stroke: 4.250 in x 3.750 in (107.95mm x 95.25mm)
Block: Cast iron with 4-bolt main caps; internally balanced
Cylinder Heads: GM aluminum oval-port; 110 cc combustion chambers; 2.190 in intake valves / 1.880 in exhaust valves
Compression Ratio: 10.1:1
Horsepower: 480 hp @ 6,000 rpm
Torque: 490 lb-ft @ 3,800 rpm
Max Recommended RPM: 6,400
Crankshaft: Forged steel
Connecting Rods: Forged steel
Pistons: Forged aluminum
Ignition: Billet HEI distributor; 36° total timing @ 4,000 rpm
Fuel Requirement: 92-octane premium unleaded
This engine emphasizes durability with all-forged internals and is more maintenance-friendly than vintage 427s, thanks to hydraulic components that eliminate frequent valve lash adjustments.
Valve Train Details
The ZZ427/480 features a modern overhead-valve (OHV) pushrod design optimized for mid-range torque and high-RPM stability.
Camshaft: Hydraulic roller tappet; 0.527 in intake lift / 0.544 in exhaust lift; 224° intake duration / 234° exhaust duration (@ 0.050 in); 110° lobe separation angle (LSA)
Lifters: Hydraulic roller (part #19211809)
Rocker Arms: Aluminum roller-style; 1.7:1 ratio
Pushrods: Hardened steel (intake part #19211804; exhaust #19211805)
Valve Springs: Ovate-wire beehive; 155 lbs seat pressure @ 1.880 in installed height
Valve Lash: Hydraulic (1/2 turn past zero lash; no periodic adjustments needed)
Timing Chain: Heavy-duty single roller
Yes, the ZZ427/480 comes standard with a roller rocker valve train. Specifically, it uses aluminum roller-style rocker arms (1.7:1 ratio) paired with hydraulic roller lifters and a hydraulic roller camshaft. This setup reduces friction, improves efficiency, and enhances longevity compared to older flat-tappet designs found in vintage 427s. It's a key upgrade for better performance on pump gas and reduced wear at higher RPMs.
* High Performance ZZ427cid Aluminum Head V8 Engine
* Turbo 400 Automatic Transmission
* 12-Bolt Posi Rear End
* Power Assist Steering
* Power Disc Brakes
* Dual Exterior Sport Mirrors
* Bucket Seats and Center Console Shift
* Comfort Grip 3 Spoke Steering Wheel
* Custom Dakota Factory Analog look integrated with Digital Displays and color band Tach.
* Custom Sound System for Premium Audio
* Air Ride Suspension for a Smooth Ride (Adjustable)
* Power Convertible Top and factory boot convertible Cover Enjoy Open-Air Cruising
* Custom Staggered Chrome Wheels
This Chevelle is a Show stopping head-turner that produces smiles everywhere it graces.
Whether you're looking for a weekend cruiser or a show-stopper,
This 5 passenger convertible is a su
This vehicle may have an open safety recall. Head to the National Highway Traffic Safety Administration (NHTSA) website to perform a quick search.
Some vehicles may be subject to manufacturer safety recalls. See if there are any open safety recalls for this vehicle. This does not include non-safety recalls. Recently announced safety recalls may not yet be posted and there may be a delay between the time a repair is made and before it is reported or posted to the website. Before purchasing, be sure to ask the dealer for an up-to-date status on any recalls.
