1970 Boss 429

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The photos of this 1970 Boss 429 (VIN 0F02Z104684 conversion KK 429 2075)  were provided by Ron Stevens .  This extremely exciting 1970 Boss 429  was sold on eBay.com.  I wish to thank Ron for allowing me to use his images here!

Vehicle Description


 

The Boss 429 was first introduced in 1969 in order to homologate the Boss 429 engine for NASCAR usage. Although the Torino and Montego were actually raced the Mustang, being the image car, was chosen to make the engine available to the public.

In order to fit the engines, the cars were shipped from the Ford assembly plant to an outside contractor - Kar Kraft- who performed the modifications. These included moving the front suspension outwards thus widening the track by 2 inches and the custom building the exhaust system.

The Boss 429 engine took-up most of the available space in the engine compartment, so Ford moved the battery to the trunk. This also helped the weight distribution of the car, particularly for drag racing. A special battery cap vent kit was included to vent fumes outside the trunk area via a rubber hose. Most original battery vent caps were tossed when the first battery wore-out and was replaced, making originals a very rare item. Presumably, having the battery take-up a large portion of the trunk area, was the reason that Boss 429's were not available with the fold-down rear seat option

The Boss 429 engine was built to compete with the Chrysler 426 Hemi in NASCAR oval track racing. In order to qualify the engine, Ford had to produce a small number of production vehicles equipped with the engine. The street Boss 429 shared almost no parts with the Boss 429 Hemi that was actually raced. Boss 429 Mustangs were produced in calendar year 1969 (Jan-Dec). The early cars had hydraulic camshafts, the later cars had a solid lifter camshaft with more lift and duration that was the same one used in the 429SCJ wedge. Lack of development time caused the early hydraulic camshaft equipped Boss 429's to get a bad performance reputation. The later solid-lifter B-9 engines actually run well even though they do not have the radical camshaft of a MoPar Street Hemi. Unfortunately, the ignition rev limiter kicks-in about 1,000 rpm below where the engine was really designed to perform.

The front spoiler is unique to the BOSS429 Mustang and is not the same unit installed on BOSS302 and MACH-1 Mustangs. This spoiler is shorter than those spoilers because of reduced ground (and curb) clearance due to the lowered front-end on the BOSS429 Mustang.

This Boss 429 is a Museum quality car at the total concourse correct level with all numbers matching and features the following:

bullet BOSS 429 H.P. ENGINE
bullet429C.I./375 H.P./450 FT-LB
bulletALUMINUM CYLINDER HEADS
bullet1 OF 499 BUILT, KAR KRAFT #2075
bullet3.91:1 AXLE, 4-SPEED, PS, PDB,AM
bulletCOLOR: GRABBER BLUE
bulletINTERIOR WHITE: TRIM CODE TW
bulletMAGNUM 500 15X17 WHEELS/GOODYEAR F60-15 POLYGLAS GT TIRES
bulletTRACTION-LOK (LIMITED SLIP) DIFFERENTIAL W3.91:1 GEARS - DRAG PACK
bulletRAM-AIR INDUCTION
bulletFRONT SPOILER
bulletENGINE OIL COOLER
bulletFULL CONSOLE
bulletELECTRIC CLOCK
bulletTACHOMETER
bulletRIM-BLOW STEERING WHEEL
bulletREV LIMITER @6150

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