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Cool Rides

70 Chevelle ProPane

Posted on May 11, 2021


70 Chevelle “ProPane”

Vehicle Specifications

Design & Engineering

Name: ProPane
Description: Propane-powered 1970 Chevrolet Chevelle
Concept: Jim Holloway, Mothers® Polish
Engineering & Chassis: Johnny Omundson, Obrothers Design
Electrical Engineering: Chris “SPARKY” Versteegh
Engine Development: General Motors and Mothers® Polish


Type: GM LSX 454 Crate Engine
Fuel: LPI Liquid Propane Injected
DIisplacement: 454 CI
Bore & Stroke: 4.185 x 4.125
Compression: 11:1
Horsepower: 925 @ 5900 rpm
Torque: 954.8 @ 3500 rpm
Supercharger: Magnuson, 12-10 PSI boost
Billet Valve Covers & Coil Relocation Brackets: Wegner Motorsports
Engine Pulley Front Accessories Drive Kit: Wegner Motorsports
Headers: Magnaflow Custom Headers by Richard Waits
Undercar Exhaust: Magnaflow
Custom Radiator Cooling: Mattson triple pass
Intercooler: Mattson
Transmission: G-Force T-56 6-speed custom rated to 1200 hp
Flywheel: Centerforce
Clutch: Centerforce Dual Disc
Injection: PEG Propane Edge Group 16-injector rail, high-performance injection system
Fuel Tanks: Propane Performance Industries 9.00” 6-cell conformable dual-flanged tank system
Fuel Systems: PEG Propane Edge Group Dual Jet Pump with dual BTVA supply controllers
Ignition Coil Packs: GM
ECU: Holley Dominator
Lightweight Battery: Braille
Starter & Alternator: CSI
Lubricants: Pure Power Lubricants
Oil Filter: Pure Power Lubricants


Chassis: “JohnnyO” of Obrothers Design
Upper / Lower Control Arms: Obrothers Design Custom Billet
Roll Cage: Integrated, 10-point
Rotors & Calipers: Baer Brakes 6-piston mono block
Master Cylinders: Tilton/Obrothers Design integrated pedal box
Springs: Hypercoil
Wheels: Custom
Tires: Pirelli P-Zero
Shocks: Penske Racing 8300 with reservoir
Steering System: Flaming River Products
Plumbing Supplies: Mesa Hose & Goodrich
Differential: Speedway Engineering
Driveshaft: ACPT Carbon Fiber
Mufflers: Magnaflow Custom-Built 4.02 Oval


Custom Upholstery: Griffin Interiors
Audio: Audio Shoppe / Arc Audio Components
Seats: Cobra
Safety Harness: Cobra
Interior Hides: Katzkin
Dash: Modified by Redline Gauges
Gauges: Auto Meter Phantom Series/Red Line Gauges
Steering Wheel: Billet Specialties
Door Lock Knobs: Billet Specialties
Door Handles: Billet Specialties
Fasteners: Rad Rides by Troy
Sound Insulation: Dynamat
AC System: Vintage Air
Transmission Shifter: Long Shifters
Interior Paint: Chris Guinn, Guinn Paint


Custom Painting: Chris Guinn and Spade Bros.
Body Modifications: Chris Guinn
Paint: BASF
Protective Coatings: Specialized Coatings
Exterior Trim Restoration: Artistic Plating
Chrome Plating: Artistic Plating
Restoration Products: OPG and Goodmark
Updated Wiper Motor System: Detroit Speed & Engineering
Restoration Glass: JRD International