Project Engine LA Thumper
Enginelabs Projects

SMALL-BLOCK MOPAR ENGINE: Project Engine LA Thumper

When it comes to small-block Mopars, the 340 is more than legendary, it’s an icon. The small mill powered thousands of factory hot rods in the ‘60s and ‘70s, as well as an untold number of race cars since then. Project LA (L, A, not la as if you’re singing) Thumper will be a modern build that is on the ragged edge of streetability but still able to drive to the track before winning races. Built in a home garage, the series was designed to show how any enthusiast can rebuild their engine at home and achieve great results.

When assembled, the engine will find a home between the fenders of a ’67 Plymouth Valiant. Check out the links below to see what we did to build this street small-block and how we did it.

Project Build summary Build thread

Project Specs

Cubic Inches: 416
Block: 340 Resto
Crankshaft:  SCAT PN: 1-98012-BI (4-inch Stroke)
Rods: 6.123-inch I-Beam
Pistons: 4.070-inch ICON Forged
Camshaft: Lunati Hydraulic Roller
Heads: Trick Flow

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