48 Hour Camaro
The 48 Hour Camaro concept was originated with the purchase of a locally owned, nicely restored 67 Camaro at a local car show in the summer of 2010. After 10 months of intense planning and preparation, the actual build of the car took place over three 16 hour days starting on May 16th at the RideTech facility in Jasper Indiana. The idea was to demonstrate how efficient it could be to take the plethora of model specific components made today and create a high end Pro Touring style car. To further demonstrate the effectiveness of this concept, the successfully finished car was then driven to the Nashville Goodguys show [about 200 miles] and then raced all weekend at the Goodguys autocross where it placed 2nd in the vendor class. It was then driven back home to Jasper without incident.
The reason we started with a nicely restored car was that we did not want to engage in the lengthy process of body and paintwork…that portion of any build could be anywhere from several weeks to several months alone. By starting with a restored car we could begin bolting on new components right away.
The Parts List
- Engine – LS3 engine package from Lingenfelter Performance Engineering [LPE] that made 602 hp on their engine dyno. This package uses a Holley Avenger EFI ECU, and a Comp Cam valvetrain built to LPE specs. It also uses Hooker Headers, a Holley cast aluminum LS conversion oil pan and engine mounts, and a Vintage Air Frontrunner accessory drive system. We also used an oil cooler supplied by Earls to keep the oil temp down on the bigger tracks.
Lingenfelter 48 Hour Camaro Engine Build Information
- LS3 Block 4.070″ Bore
- GM Crankshaft
- Mahle Forged Pistons with tool steel pins– 11.3 to 1 Compression
- Mahle file fit rings
- GM Connecting Rods
- Clevite Rod and Main Bearings
- Lingenfelter Custom Grind Camshaft by Comp Cams – 243/.637 IN 273/.637 EX 112 LSA Duration @50 243 / 273
- GM LS3 Roller Rockers with Comp Cams bearing / trunion kit 1.7 ratio
- Comp Cams 3 Bolt Roller Timing Chain and Gear Set
- Lingenfelter CNC ported LS3 Cylinder Heads with hand clean up
- Lingenfelter multi-angle valve job, CC combustion chambers
- GM 2.165″ hollow stem intake / 1.59″ heavy duty exhaust valves
- Surfaced for correct compression ratio
- Comp Cams valve springs, retainers, and locks
- GM Head Gaskets
- Holley Hi-Ram Intake
- Holley 92mm Throttle Body
- Lingenfelter blueprinted Oil Pump
- Holley Oil Pan and pickup
- Hooker 1 3/4″ Headers LS 67-69 Camaro
- Holley Dominator Engine Controller
- Holley 60 pound Fuel Injectors
- Lingenfelter Billet Fuel Rails
- ATI Crank Dampner
- Vintage Air Front Runner Accessory Drive
- Updated Engine Build Information
- The following updates were made after the original build to increase torque at a lower RPM.
- GM LS3 Intake Manifold
- Lingenfelter GT11 Camshaft, ground by Comp Cams – 215/.631 IN 231/.644 EX 118 LSA
- The aluminum triple pass Desert Cooler radiator and electric cooling fan assembly was supplied by U.S. Radiator. I have a habit of sitting in the Camaro in the staging lane at the autocross in 96 degree heat with the engine running and the A/C running. The water temp stays at 186 degrees. Really.
- All plumbing is the Ultraflex 650 from Earls. Expensive, but works perfectly every time.
- Rick Stainless Tanks provided the stainless fuel tank and Aeromotive supplied their new drop in fuel pump module.
- The 3″ mufflers and exhaust components were provided by Cherry Bomb.
- The Quicktime bellhousing, Science Friction clutch, and hydraulic linkage system was supplied by American Powertrain.
- Auto Gear Equipment provided the M20 Muncie 4 speed, and Gearvendors supplied their overdrive unit. This combination has proven to be a real asset on the autocross track…clutchless shifting in or out of overdrive in any gear…its almost an unfair advantage!
One of the reasons we chose a Muncie 4 speed with a Gear Vendors unit was that we did not want to spend time modifying the transmission tunnel. This package went in with NO tunnel or crossmember modifications at all. The other reason we chose it was that I wanted to be able to shift the car under full power into 2nd and 3rd gear. The Muncie does that really nice!
- We used a Moser 12 bolt GM rearend with their new WaveTrac posi unit and 35 spline axles. Moser offers the option of installing our RideTech 4 link brackets at their factory, so we chose that route. They even helped us fix the rearend after I personally screwed up the initial width measurement
- The Camaro uses a full set of Baer Brakes with 14″ rotors, 6 piston calipers, and a manual 1.125″ bore Corvette master cylinder. This car has better brakes than my Z06…by a long shot.
- The A/C unit is the new Gen IV Camaro unit by Vintage Air. This is another category that the Camaro beats my Z06. Cold…all the time!
- The stereo amplifier and speakers are all Kicker components. A small 4 channel amp and 4 speakers are integrated with an ipod connection to make sure your favorite music can flow uninterrupted
- We used an American Autowire Builder 19 base wiring system coupled with their Factory Fit rear harness to save some time. Loved both…everything was clear, concise, and included!
- The zoomy billet window cranks and door handles came from Clayton Machine. Love the mechanical design!
- The direct fit gas pedal, throttle cable, and pedal pads are from Lokar.
- The minitubs, wiper motor and steering box are from Detroit Speed
- The seats are the Recaro Profi units
- Autometer provided a Pro Comp Dash unit that features an analog tach with digital readouts for all other gauge function. It also includes data logging and lap time capabilities. The carbon fiber guage pod and center dash plate are from Anvil.
- The steering column is a tilt unit from Ididit. The steering wheel was actually on the car when it was purchased…it looks fine so we used it.
- Classic Industries stepped up for all of the miscellaneous oem style components…dash pad, carpet, bumpers, door panels, mirrors, and the rest of the trinkets that are always so hard to locate.
- Dynamat provided their new custom fit sound deadening package. Since it was already cut to fit the early Camaro it saved a huge amount of installation time and eliminates all the ugly noises a hotrod can make!
- The wheels are GA3R Forgelines in a 18×10 w/ 5.75 BS and 18×12 w/ 7″ BS size with a matte black center and a matte bronze rim. The BF Goodrich tires are 275/35-18 and 335/30-18.
- The 48 Hour Camaro is ALL about suspension and of course, uses a complete RideTech package. The rear is the bolt-on AirBar 4 link package but uses the new Ridetech T/A [Triple Adjustable] coilovers. The RideTech T/A has 3 valving adjustments…one for rebound and then both a high speed and a low speed compression adjustment. While this technology has existed on the motorcycle and offroad market for some time, RideTech has now made it available for the serious hotrodder.
- The front end of the Camaro features the new RideTech Tru Turn suspension system. The Tru Turn package allows you to fit an 18×10 wheel with a 275/35-18 tire with a stock subframe and only minimal modifications to the ineer and outer fender lips. At the same time RideTech has corrected all the geometry sins that have plagued the oem suspension. The camber gain is improved with taller spindles, the bumpsteer has been minimized [under .050" through 5" of suspension travel!] with a new draglink relocate bracket and tierod assemblies, and new steering arms have created more clearance to run a wider wheel. This package is very significant because up to this point to get this kind of rubber under a Camaro you had to install an aftermarket subframe.
- RideTech StrongArms, T/A coilovers, and a Musclebar swaybar finish off the frontend.
- One would assume that a car of this stature and horsepower would automatically have subframe connectors. Well, not in the traditional sense. RideTech’s TigerCage takes cars of improving the structural integrity of the car AND offer better crash protection for the driver. It’s a bolt-in unit made from 304L stainless that integrates with the existing structural strength points of the Camaro. RideTech also supplied the SFI approved 4 point harnesses.