Dyno Video: Big-block Mopar Gets Ready For The Track

Here’s a sweet-sounding 470ci Mopar big-block running on the DTS dyno at IMM Engines in Indio, California.

Shop boss Brian Hafliger says the customer supplied the short block, which is based on a low-deck block bored to 4.375-inch and fitted with a 440 Source 3.910-inch-stroke rotating assembly. Compression ratio is 12.4:1. He then hand ported the Mopar Stage VI wedge cylinder heads so they’d flow around 370 cfm at .700-inch lift. A port-matched Indy intake sits on top with along with a Quick Fuel 1050 cfm carb. A Comp Cams flat-tappet camshaft works its magic through a set of T&D Machine 1.7:1 rockers. A Charlie’s oil pan stores the lubricant, MSD supplies the spark and TTI exhaust takes care of the spent fumes.

Built for bracket racing in a ’68 ‘Cuda, the engine pulls 650 horsepower on 110-octane fuel with 590 lb-ft peak torque.

About the author

Mike Magda

Mike Magda is a veteran automotive writer with credits in publications such as Racecar Engineering, Hot Rod, Engine Technology International, Motor Trend, Automobile, Automotive Testing Technology and Professional Motorsport World.
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