The 2010 Engine Challenge...
The 2010 Engine Challenge featured the Mopar small-block, with Indy/RHS X cylinder heads. This month we’ll show you the parts it took to build them, and the numbers straight from Comp’s engine dyno.
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.
Our sponsors are an important...
Our sponsors are an important part of the Mopar Muscle Engine Challenge, and we wouldn’t be able to host the contest without companies like AMSOIL, Comp Cams, Cometic, Clevite, and Rockett Brand racing fuels. We appreciate their support and thank them for allowing us to provide our readers this valuable information.
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...
Schurbon Engine and Machine At exactly 340 cubic inches, last year’s winner Schurbon Engine and Machine brought one of the smallest displacement engines to our 2010 contest, making over 1.5 horsepower per cubic inch for a backup win in this year’s dyno competition.
Schurbon Engine and Machine Parts
Schurbon Engine and Machine...
Schurbon Engine and Machine Power
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 Promax...
Promax Performance Promax Performance placed second in this year’s competition, using a well-built Chrysler 340 to make an impressive 1.45 horsepower per cubic inch.
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...
Mid America Racing Engines Mid America Racing Engines brought the largest displacement engine to our contest at 408 cubic inches. Making over 580 horsepower, the most of the competition, Mid America placed third in the 2010 Engine Challenge.
Mid America Racing Engines Parts
Mid America Racing Engines...
Mid America Racing Engines Power
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
Dyno testing Mopar engines...
Dyno testing Mopar engines is great fun, and we appreciate the participation of the contestants and sponsors of our event. Best of all, we get to give our readers real world power numbers for engines that are very similar to what they would build.
Remember that these engines...
Remember that these engines were limited to RHS’s cast iron replacement cylinder heads, making the power numbers even more impressive. These engine builders showed the capability of the RHS/Indy X heads on small and large displacement engines, making them a good choice for your next small-block build.
Our sponsors are an important...
Our sponsors are an important part of the Mopar Muscle Engine Challenge, and we wouldn’t be able to host the contest without companies like AMSOIL, Comp Cams, Cometic, Clevite, and Rockett Brand racing fuels. We appreciate their support and thank them for allowing us to provide our readers this valuable information.
MRL Performance MRL Performance...
MRL Performance MRL Performance utilized the same plan as the top two finishers in our contest, building a 340 cubic inch powerplant with a flat-tappet camshaft. Placing fourth, MRL showed us what a mild engine could do with out-of-the-box cylinder heads.
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 B&G...
B&G Speed and Machine B&G Speed and Machine placed fifth this year, using a Chrysler 360 as the basis of their engine build. At more than 400 horsepower, this engine made a strong showing in our 2010 contest.
B&G Speed and Machine Parts
B&G Speed and Machine Pow...
B&G Speed and Machine Power
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...
Chenoweth Speed and Machine/LaRoy Engines Teaming up with LaRoy Engines this year, Chenoweth Speed and Machine brought the smallest displacement engine to our contest. Unfortunately their Chrysler 273 cubic inch small-block had mechanical issues, landing them in sixth place.
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
Chenoweth Speed and Machine/LaRoy...
Chenoweth Speed and Machine/LaRoy Engines Power Well, we didn’t get to make a dyno pull on the Chenoweth entry because coolant was getting into the number seven cylinder, forcing them to abort any attempt at qualifying. We were eager to see this engine run, but unfortunately the failure to qualify landed the Chenoweth/LaRoy entry in sixth place.
2010 Participants
Schurbon Engine and Machine
Scott Schurbon
203 South Clark St Maquoketa, IA 52060
563/652-3100
Schurbo@msn.com
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