The 2010 AMSOIL/Mopar Muscle Engine Challenge featured the Mopar small-block, and all of the competitors were required to use the same RHS/Indy X cast iron cylinder heads on their engines. By now we’re sure you know that Schurbon Engine and Machine won the 2010 contest, which was judged by the most peak horsepower per cubic inch. All of the engines in the 2010 contest were impressive, and the fact that none of these engines failed is a testament to sound Chrysler engineering and the professional engine building techniques employed by the contestants. This month we’ll give you a list of the parts that went into the engines and show you the dyno sheets attesting to their power. Each engine shop is listed in the order they finished in the 2010 AMSOIL/Mopar Muscle Engine Challenge.

Building powerful and durable engines takes great skill, and this year’s small-blocks impressed everyone as each of the engines that made the required dyno pulls scored well over one horsepower per cubic inch running on Rockett Brand 93 octane unleaded gasoline. In fact, we’d love to have any of these engines for one of our Mopars as they all impressed us with their power and durability. As you’ll see from the parts lists and dyno sheets below, these small-blocks didn’t act so small with some making horsepower numbers that would be impressive even from larger displacement engines. Be sure to visit our website where you can see videos of the 2010 contest, and check out the rules for the 2011 contest which will feature a big-block Mopar engine.

Schurbon Engine and Machine Parts

Block: Factory 340 Chrysler
Crank: Factory 318 Chrysler
Pistons: CP Bullit forged
Connecting Rods: Dyers remanufactured forged
Camshaft: Comp Cams solid roller
Timing Gears and Chain: Cloyes
ValveSprings: Used Winston Cup
Rocker Arms: Comp Cams aluminum roller
Cylinder Heads: RHS/Indy X heads
Intake Manifold: Indy single-plane
Carburetor: Holley four-barrel
Oil Pan: Milodon
Distributor: MSD Pro-billet

Promax Performance Parts

Block: Factory 340 Chrysler
Crank: Factory 340 Chrysler
Pistons: forged flat-top
Connecting Rods: Eagle Forged
Camshaft: Comp Cams solid roller
Timing Gears and Chain: Comp Cams
ValveSprings: Comp Cams
Rocker Arms: Harland Sharp
Cylinder Heads: RHS/Indy X heads
Intake Manifold: Edelbrock Super Victor
Carburetor: Promax-prepped Holley four-barrel
Oil Pan: Milodon
Distributor: MSD Pro-billet The Power

Mid America Racing Engines Parts

Block: Factory 360 Chrysler
Crank: Eagle forged, four-inch stroke
Pistons: CP forged
Connecting Rods: Scat forged
Camshaft: Cam Motion solid roller
Timing Gears and Chain: PBM
ValveSprings: PBM
Rocker Arms: Harland Sharp aluminum roller
Cylinder Heads: RHS/Indy X heads
Intake Manifold: Edelbrock single-plane
Carburetor: Holley four-barrel
Oil Pan: Moroso
Distributor: MSD Pro-billet

MRL Performance Parts

Block: Factory 340 Chrysler
Crank: Factory 340 Chrysler forged
Pistons: Icon forged
Connecting Rods: Probe
Camshaft: Lunati Voodoo solid flat-tappet
Timing Gears and Chain: Summit Racing Equipment
ValveSprings: Howards Cams
Rocker Arms: Hughes Engines
Cylinder Heads: RHS/Indy X heads
Intake Manifold: Mopar Performance single-plane
Carburetor: Bigs Performance-prepped Holley four-barrel
Oil Pan: Milodon
Distributor: Mopar Performance electronic

B&G Speed and Machine Parts

Block: Factory 360 Chrysler
Crank: Factory 360 Chrysler
Pistons: Speed Pro hypereutectic cast
Connecting Rods: Eagle forged
Camshaft: Chet Herbert solid flat-tappet
Timing Gears and Chain: Melling
ValveSprings: Comp Cams
Rocker Arms: Factory 273 Chrysler adjustable
Cylinder Heads: RHS/Indy X heads
Intake Manifold: Edelbrock Victor 340 single-plane
Carburetor: Holley four-barrel
Oil Pan: Factory Chrysler
Distributor: Pro Comp

Chenoweth Speed and Machine/LaRoy Engines Parts

Block: Factory 273 Chrysler
Crank: Factory 273 Chrysler
Pistons: Speed Pro
Connecting Rods: RPM forged
Camshaft: Comp Cams solid roller
Timing Gears and Chain: Comp Cams
ValveSprings: Comp Cams
Rocker Arms: Factory 273 Chrysler adjustable
Cylinder Heads: RHS/Indy X heads
Intake Manifold: Edelbrock Victor
Carburetor: Quick Fuel four-barrel
Oil Pan: Factory Chrysler
Distributor: Factory Chrysler electronic

2010 Participants

Schurbon Engine and Machine
Scott Schurbon
203 South Clark St Maquoketa, IA 52060
563/652-3100
Schurbo@msn.com

Mid America Racing Engines
David Bruns
1945 W 18th St Washington, IA 52353
319/653-6282
midamericadb@iowatelecom.net

TEAM OF: Chenoweth Speed and Machine
Mike Chenoweth
368 Erie Ave Morton, IL 61550
309/266-8084
www.chenowethspeedandmachine.com
and
LaRoy Engines
Jim LaRoy
P.O. Box 969 Challis, ID 83226
208/879-2969

Promax Performance
Ben Gorman
30 Gasoline Alley Suite A Indianapolis, IN
317/484-1451
sales@promaxcarbs.com

MRL Performance
Mike Liston
4651 Culley Lane Jackson, MI 49201
517/569-2672
Mrlperf340@gmail.com

B&G Speed and Machine
Bill Hess
140 East Old Plank Bargersville, IN 46106
317/752-0389
bgspeedmachine@yahoo.com

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