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Mark Stielow's “Mayhem” Camaro Wins the 2012 OPTIMA Ultimate Street Car Invitational

Red Line Oil-equipped 875 hp '67 Camaro Makes Its Race Debut in Pahrump

Mark Stielow’s Red Line-equipped “Mayhem” ‘67 Camaro is the latest Pro-Touring build from the GM engineer and was his weapon of choice brought his second win in three years at the Optima Ultimate Street Car Invitational last weekend in Pahrump, NV. Stielow’s 877-hp LS9 powered hot rod beat second-place finisher, Brian Hobaugh by just a single point.

Every year Optima Batteries holds the event the day after the SEMA Show and invites some of the wildest street cars and drivers out to compete for the title. 2012 was the first time the series had qualifying events around the country to give enthusiasts around the US a chance to compete. During SEMA, the Optima Team also gives a few “golden tickets” to the owners of the best display cars at the trade show, inviting them out to compete.

Pro-Touring muscle machines, late-model supercars, vintage sports cars and even a few drift cars competed on the road course, autocross, braking challenge and engineering competition to be crowned the "Ultimate Street Car" from the 2012 SEMA Show. When all was said and done, Mayhem came out on top, winning the coveted title of OPTIMA Batteries Ultimate Street Car of 2012.

The entire event, from the pre-SEMA builds to the awards ceremony, was shot for a national TV show which will air in early 2012 on a national cable network. For full event results, more information on the OUSCI results, TV show, participants, official rules and more, visit

Stielow's ’67 is his 12th Camaro build up and the third car that Mark built using an LS9 V8 engine from the Corvette ZR1. This time, Mark has 100 hp more and 150 pounds less to deal with then in his famed “Red Devil” buildup from 2010! With help from Thomson Automotive, the engine displacement has been upped to 7.0L and been tuned to almost 900 hp, but that’s not the end of the story. The car looks like a classic Camaro from the outside but under this classic body, the car sports a host of performance upgrades including a Detroit Speed chassis front and rear, Brembo brakes, and coolers for the transmission and rear-end. Stielow runs Red Line’s 5W30 motor oil (the same viscosity as recommended from the factory), D4 ATF for his TR6060 6-speed trans, and Red Line’s 75W90 GL-5 gear oil for the limited slip differential. Don’t forget the WaterWetter in the radiator, too.

Red Line Oil would like to congratulate Mark on his win and look forward to seeing what else he will do with his stunning first-gen. Thank you for the support!


A stock ’67 body was utilized with carbon fiber panels on the entire front clip including the doors, paint by Murray Pfaff

Detroit Speed and Engineering (DSE) mini tub
Stenod Performance custom roll cage and exhaust cutout on floor
Aluminum cowl hood and aluminum front bumper


  • DSE front sub-frame with the remote reservoir shock mono tube shocks
  • DSE Sub-frame connectors
  • DSE Quadra Link rear suspension with DSE sway bar and mono tube shocks


  • Front 18X10 Formula 43 RAD 6 Wheels Goodyear Eagle F1 Supercar
  • Rear 19X12 Formula 43 RAD 6 Wheels Goodyear Eagle F1 Supercar


  • Brembo GT –R Big Brake Kit
  • Front 6 piston calipers
  • Rear 4 piston calipers
  • 2006 Corvette Z06 ABS system


  • Thomson Automotive-built 7.0L GM LS9
  • LS7 block with oil system revisions
  • GM LS9 Supercharger with a 3:1 drive ratio and modified Inlet snout
  • GM LS7 Throttle Body
  • Kinsler fuel injectors
  • Kinsler Digital FMU system
  • Stenod-built inlet tube
  • Callies 4-inch crankshaft
  • Oliver 6.125-inch connecting rods
  • Diamond 4.125-inch pistons
  • Thomson Automotive camshaft and cylinder head porting
  • Red Line 5W30 Motor Oil
  • Lingenfelter LS9 flywheel and LS9 clutch
  • LS9 cylinder heads and valvetrain
  • Peterson dry sump tank and LS9 oil pan with stock pump
  • GM Performance Parts Crate engine controller and modified harness


  • Tremec TR6060 6-speed
  • Red Line D4 ATF


  • Currie Ford 9-inch with 3.25:1 ratio
  • TrueTrac Torsen limited slip differential
  • Red Line 75W90 GL-5 gear oil


  • Kooks Stanless headers with SPD Stainless Steel flanges
  • Borla Stainless Steel 3” exhaust built by Stenod
  • Borla 3” mufflers


  • Griffin custom radiator
  • Red Line WaterWetter
  • Transmission and differential coolers with Weldon Pumps


Sources: Optima Batteries,