Model: Shelby Mustang K Code
Engine: 6 bolt 289
VIN: Date code 4M1
WILL SHIP WORLDWIDE. No expense spared - Showroom detail! - Ready to drop in car. Super rare factory 289 HI-PO K code Ford 6-bolt block. Dated block 4M1 (December 1, 1964) with matching dated heads. Could work for a early 1965 K code mustang, an early 1965 Shelby Mustang GT 350 or even a 289 CSX Cobra.
Completely rebuilt bored 040.over everything correct except for reproduction fuel pump and service replacement harmonic balancer. Carb is correct Venturi size but is an electric choke. Even Hi-Po unique exhaust manifold are original not reproduction. All pullies and brackets are date coded. Solid lift cam. Roller-tip rockers. Balanced and comes with standard flywheel. Even has original hipo engine mounts included.
Some people are concerned about buying a used engine wandering if it will be a good one. We can install in your vehicle for additional labor charge.
In 1963, the 289 High Performance V-8 was introduced in the Ford Fairlane. It was an engine born to rev with a hot flat-tappet mechanical camshaft, screw-in rocker-arm studs, valve spring pockets, an Autolite 4100 series four-barrel carburetor, cast-iron headers, Brinnell-tested nodular iron crankshaft and high-performance connecting rods, a slide-on counterweight, a wider harmonic dampener, and ultimately a dual-point ignition system.
Because the 289 High Performance V-8 was produced in such limited quantities at Ford’s Cleveland Engine Plant early on, these engines had limited availability. You would have thought Ford’s sporty new Mustang would have blazed a trail from the stable with a 289 High Performance V-8 option from the start in April of 1964. It didn’t.
The earliest known “K” VIN Mustang is 5F07K100148, a pre-production Dearborn unit built specifically for Henry Ford II prior to the start-up of mass production at Dearborn on March 9, 1964. Aside from HFII’s one-of-a-kind Hi-Po Pony, the earliest known “K” VIN production Mustangs were bucked and built in late June of 1964 at the Dearborn, Michigan, assembly plant according to Scott McMullen, a Hi-Po historian who has done a tremendous amount of research on early K-code Hi-Po engines.
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