1973 Dodge Coronet Customer - WH41 M Code - Mr. 4 Door Core - Ready-2-Race




Product type: Chassis Core

Vendor: ReadyChassis



Got the need for some classic speed? But do you also need the back seat for car seats or friends that don't want to crawl around the roll cage? Then we have the model for you.

This particular car happens to be our actual 'SEATSIX' Coronet Sedan, which we used to prototype a build a while back. Now it's for sale as a complete beast, or as a roller.

This was our personal shop project car...and we hate to let it go, but we are building more! (in different colors)

The ReadyChassis Mr. 4 Door cores are exactly that. NHRA certified for 10.50 ET's, without any of that race car stuff in the way. Ever since the Dodge Charger Sedan came out in 2005, we've been building the retro version out of sedans and wagons for Dad's around the globe. 

In current form, this Coronet weighs in at 3870 with a full cell, and gets 11.70's @115 on pump Sunoco, and can be driven to Walmart to pick up your grocery order. This car is factory F8 Forest Green Metallic (who thought that would come back in style!)

We picked this car up in 2014 from a collector in Michigan. It was a 'barn find' in 1993 and the engine was rebuilt. It was a show car from then until we picked it up. We still have the original maintenance documentation and all the original parts that were removed for bracket duty in 2019-2020 seasons. The car was a factory ordered sedan delivered in Ohio.

This is the most consistent car we've built from mostly Mopar Playbook parts. This car runs within hundredths in any weather or DA. (timeslips to prove) We hit 3 tracks on the same day in different weather and only dialed .004 difference.

The Holley EFI is incredible with the tune we put in it. Clean IL title in our name since 2014. We are the 3rd owners, first, two were the same family since new. 

Car was featured on PowerAutoMedia StreetMuscle Magazine in 2020

The features of This Mr. 4 Door Sedan:


  • 1973 Dodge Coronet Custom Sedan
  • Original M-Code 400 Car, Radio Delete
  • Triple threat Forest Green Metallic and Gator grain top
  • Bench seat interior, with one 5-point harness and 5 other lap belts
  • Custom 4-pin Glasstek Sunoco 5-inch Cowl
  • Converted to Manual Brakes and Manual Steering
  • AC system still works if you ad the compressor and dryer
  • Heat works great - hose system and valve are new, in the box
  • Show quality floor and frame. Car was off the road as of mid-'80s
  • Factory Radio delete car, the dash cluster is incredible mint
  • Autometer Memory Tach and Light
  • Turbo Action Cheetah Reverse Manual 
  • Hotwire Fuse panel, relays
  • The trunk floor is set up for Injected prepped street tank (available)


  • Mild Steel 8pt Bar by ReadyChassis integrated to allow full use of rear seats and trunk
  • Clevis swing-out front door bars
  • 8-3/4 Rear (71 Charger Housing)
  • 4.10 Moser - Yukon Case - Moser Full Spool
  • Moser 35 Spline Axles, Green Bearings
  • Mopar HD Springs, New Plates/U-bolts
  • Original Oil Shocks (great for reaction times)
  • 11" Factory brakes, new drums, and shoes, cylinders
  • Front suspension is stock with the Big Block Sway Bar
  • Front discs are new slotted rotors, wheel bearings, hoses, calipers
  • Full length 2.5" TTI Exhaust
  • Trans Cooler, flex lines
  • 5 Gal Fuel Cell - wired for sender
  • Double Optima Red-Tops
  • Hidden Cut Off (push/pull)
  • 0 and 2 gauge battery cabling front to rear
  • Weld Draglites 15x8 Rear with MT 28.5x10.5W slicks and tubes (12 passes)
  • Weld Draglites 15x3.5 Skinnies with 28 tall Moroso fronts/tubes
  • Weld Draglite street tire setup with 15x10 / 295 55 Drag Radials

Driveline: (Included in the Ready-2-Race package)

Engine made 505 hp at 4900 RPM on Opel's dyno without little tuning in July 2020

  • Opel Engineering June 2020 Machine Work
  • 446 CID .030 over in a seasoned 1977 Imperial Deep Skirt block
  • BRE Forged Pistons, 13.1 Compression, Race ring
  • Factory Forged Steel Crank (factory uncut journal)
  • Manley H-Beam Rods, ARP Bolts
  • Crane Cam Roller Cam and Lifters (spec card available)
  • ARP Main Studs
  • Windage Tray
  • Milodon 8 Qt Deep Pan
  • Melling HV Oil Pump
  • 440 Source Balancer
  • SFI Flexplate
  • 440 Source Heads - light bowl work
  • ARP Head Studs
  • Comp cams valvetrain and Roller Cam
  • Noisy Gear Drive
  • 440 Source Pass-side Exit Water Pump
  • Moroso Electric Water Pump
  • Procomp 100 Single Wire Alternator
  • Edelbrock Torker Intake, Stock port
  • Holley EFI Sniper TBI and Hyperspark CDI Box, Distributor and Coil
  • The car was fully re-wired from the firewall harness forward
  • No Laptop required
  • Cope 727-6 ProRace II Reverse Manual Shift
  • 5500 RPM PTC 8" Converter with ARP
  • Driveshaft Shop 1000 hp 3" Inch steel shaft with forged slip yoke and race joints
  • Hooker 1-7/8 headers with AF Meter Bungs (D-side powers the EFI)

This car is currently being offered as our Ready-2-Race model or you can have purchase with the powertrain/EFI electronics removed to be delivered as Mr. 4 Door Roller. Enclosed trailer delivery after full payment within 250 miles of 60565 for .50 a mile.

Many test passes video available, multiple midwest tracks.

More questions? chuck@readychassis.com




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