1937 Willys Coupe Donovan D-500 Aluminum Block SC Steel Southern California

1937 Willys Custom Coupe

Engine:

Donovan D-500 Aluminum Big Block:4.53” Bore, Scat USA 4340 Forged Crankshaft, 4.5” Stroke x 2.200/2.008 Pin, 6.535” Rod length…All Nitrided, Scat USA Forged H-Beam Rod set w/ 6.535” Rod Length / .990 Wrist Pin, Bushed, 2.200 Pin Diameter / .992Big End Width, SFI Certified 168 tooth Flexplate, JE Forged Pistons w/ Compression Ratio 8.03:1, Displacement of 580.21 Cu In.

Dart Aluminum Heads: Intake valve Dia. 2.4”, Avg port Dia. 2.49”, Port Volume 479cc, Port Length 6”, Exhaust valve dia. 1.9”, Clearance volume 169.1cc, Avg. Port dia. 2.36”, Rocker arm ratio = 1.7:1 Intake & Exhaust.

Camshaft: Intake Duration @ .050” = 287 degrees, Lift = .459”, Exhaust duration @ .050” = 299 degrees, Lift = .489”

Supercharger:BDS 871 Roots Type, Street Stage 1, Belt Ratio 1.15, Volume per Revolution = 440 cu in

Carburation: TwoHolley Dominators, 1000 CFM each

Ignition:MSD Digital-7with Boost Retard, Crank Trigger, Launch Control and Shift Light capable.

In Summary:The Donovan Engine is typical of the entire car. Everything was well engineered and done right. The engine has been dyno’d for break-in and Power Pulls.

For 91 Octane Fuel: 914HP @ 7,000RPM, 784 Ft. Lbs. torque with low boost of 5 Lbs.… very streetable & under stressed.

For 116 Octane Fuel: 1128 HP @ 7,000 RPM, 908 Ft. Lbs. Torque with low boost of 7 Lbs. 116 octane is achieved with racing gas or adding a “Moroso” type additive to 91 octane fuel…Again engine is under stressed.

This combination of Donovan Block / Dart Heads…. can produce well over 3,000HP with appropriate fuels and boost. Currently it is set up for low stress and durability….Change the Carburetor jets and the Blower pully/boost….it’s anything you want it to be!

Transmission:Mad Dog Transmissionsin Florida make custom transmissions for specific ‘High Horsepower & Torque“ applications. They also are a key supplier to NHRA competitors. This particular transmission is the “God Father” TH400 with ratios of: 2.48:1, 1.48:1, 1:1,…..Reverse is 2.07:1, Torque Converter is 2500 RPM Stall Speed.

Rear Axle:Specially built byCurrie Industriesin Southern California. This Differential is based on a Ford 9” design using Currie and Strange components throughout. Severe duty Limited Slip, Axles, Gears are utilized. Ring and Pinion Ratio = 3.50:1. Custom rear housing and axle width created to work in conjunction with rear wheel and rear fender dimensions.

Front Suspension / Brakes / Steering:Custom designed “Independent Front Suspension” with adjustable ride height. CustomAldan fully adjustable Coilover/Shock Absorber suspension. Brakes areWilwoodDiscs in conjunction with aWilwoodMaster Cylinder. Rack and Pinion steering utilized.

Rear Suspension / Brakes:Unique “4 Link Rear Axle” design. CustomAldan fully adjustableCoilover / Shock Absorber suspension. Two adjustable“Wheelie Bars”designed and fabricated for Safety. Brakes areWilwoodDiscs & E-Brake, to work in conjunction witha WilwoodMaster Cylinder.

Fuel Cell:AeroTec Labratories…ATL 18 Gallon Fuel cell…. Approved Worldwide for competition use. 20-gauge container, High Tensile Fill plate, Ball Type vent check valve, Spring loaded Fill valve, Dual “AN” outlets. Fuel cell is cleverly designed to can contain 2 types of Fuel if desired. (9 Gallons of 91 Octane and 9 Gallons of Race Fuel) …or act as a normal 18-gallon Fuel cell.

Electrical System:Engine drivenGM Mini Densoalternator (75amp), 1 wire connection. Dual aluminum battery boxes to house two 12 Volt sealed batteries. Electronic mechanism to retract license plate, Stoplight and Taillights are“Frenched“consistent with the “Smooth” body design.

Body / Paint:All Steel body exterior is complete and finished withGlasurit 90 Line- Base Coat/Clear Coat. Color is Midnight Black. The Lightweight Fiberglass Tilt Front End is painted to match. The entire exterior was color sanded with #4,000 grit sandpaper and buffed to a very high luster. It is now ready forFlames, Stripes or Graphicsas the new owner chooses.

Interior:TwoProcarBuckets Seats are finished in Black leather with Red Piping. A center console to match. Instrument layout design is finished and included but not sourced. Door panel design is finished and included but not sourced.

Wheels / Tires:Front wheels are 6”x18” with M/T Sportsman R/S Tires 26x6 R20LT, Rear wheels are 16”x18” with M/T Sportsman R/S Tires 29x18 R20LT

You’re looking at the dream of a Professional Engineer involved in Aerospace design and manufacture here in Southern California. Larry was also an avid Hotrodder and Bonneville Racer. Many of the components Larry designed and built are still orbiting the planet! Unfortunately, Larry unexpectedly passed away last year just as the car was nearly complete. The industry lost a true, well-respected enthusiast.

Larry always had a strong passion for the Willys“Gasser”style but wanted“State of the Art”components for Engine / Drivetrain, Fuel, Brakes, Steering and Suspension systems. Reliability, Drivability and comfort were key elements for this build suitable for Larry’s larger than average physic.

Willys two door coupes from 1937-41 are virtually identical in size and appearance.The problem is that when engine set back and rear tire tubs are created for performance, interior space is seriously compromised. This issue was solved by taking a Willys Four door “Humpback” sedan and modifying (shortened) it to be a two door “Humpback” Coupe. Working with“Paco”(formerly withChip Foose) on design, construction and painting of the “All Steel” body, the result is a“Drop Dead Gorgeous”Willys coupe. It has room for fully adjustable front seats, a picnic basket and with beautiful“Suicide” doors. The look is stunning with Concours quality!!! Wheelbase and drivetrain location are calculated for optimum weight distribution as well as handling & braking.

All Steel body with Fiberglass tilt up hood.

This is a rolling chassis that has had all the heavy lifting completed with over $300K invested. The dream stopped at this point due to unexpected death 10 years after the concept was born.

No expense was sparred in the build including the best body work and paint money can buy. Unfinished canvas ready to spec out to your preferences and desires with interior of your dreams. Big man’s hot rod with endless power.

Clear California Title Located in Temecula California 92590

Text or Call Greg 951.348.5794

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