Vehicle Manufacturer: Year and Model: Dodge (2003-2007) Viper Competition Coupe This specifications form was developed by SCCA Pro Racing and will be used by the TECHNICAL MANAGER to establish technical compliance for vehicles competing in the SCCA PRO RACING WORLD CHALLENGE series. The TECHNICAL MANAGER can also use, but is not limited to also using the following items to check compliance: Electronic Parts Catalog (EPC), Technical Information System (TIS), and the FIA/ASN Homologation forms (or equivalent documentation). The specifications within this form include all modifications that have been approved by SCCA Pro Racing specifically for the vehicle model(s) and year(s) listed on this page. The parts, specifications and assemblies used shall be those for the unmodified stock vehicle, those permitted within the Pro Racing Regulations (PRR) and/or within this VTS. If the stock parts, specifications and/or assemblies exceed the performance potential of those approved within this form, then the parts, specifications and/or assemblies used shall meet those listed within this form. Refer to SCCA PRR and Appendix A. for rules regarding all vehicle specifications not specifically listed within the VTS. The most current rules can be downloaded from the official website: www.world-challenge.com and look under the Competitors section for latest Technical Bulletins, Participant Bulletins, and Appendix A. This Vehicle Technical Specification sheet is a permissive document. The exact configuration of any modification allowed within this VTS is subject to the approval of the TECHNICAL MANAGER. Date Issued: 2.11.2009 Version Number: 6 Version Date: 2/3/2012 Page: 1 of 6
1. General Vehicle Description 1.A. Body Type: Coupe 1.B. Engine Location: Front 1.C. Drive Wheels: Rear 1.D. Wheelbase: 2515 mm 1.E. Induction Type: Naturally Aspirated 1.F. Competition Weight: See Appendix A 1.G. Weight Distribution: See Appendix A 2. Engine 2.A.1. OEM Engine Designation: Viper VGX V10 2.A.2. Maximum Displacement: 8284 cc (505 cu in) 2.A.3. Number of Cylinders: 10 2.A.4. Rev Limit: See Appendix A 2.A.5. Rev Limit Method: ECU / Spark 2.A.6. Max. Compression Ratio: 10.0:1 2.A.7. Maximum Piston Stroke: 100.6 mm 2.A.8. Restrictors: 2.A.8.a. Percentage Restriction: 20, 25, 30, 35, 40 % 2.A.8.b. Hole Diameter: 58.5, 56.6, 54.7, 52.7, 50.7 mm 2.A.9. Cylinder Firing Order: 1.10.9.4.3.6.5.8.7.2 2.A.10. Direction of Engine Rotation: Clockwise 2.B. Cylinder Block 2.B.1. Part Number: 05037031XX (03-04); 05057468XX (05-07) 2.B.2. Cylinder Block Material: Cast Aluminum 2.B.3. Maximum Cylinder Bore: 102.4 mm 2.C. Cylinder Head 2.C.1. Part Number: 2.C.2. Cylinder Head Material: 05037066XX Cast Aluminum 2.D. Valve System 2.D.1. Number of Valves Per Cylinder: 2.D.1.a. Intake: 1 2.D.1.b. Exhaust: 1 2.D.2. Maximum Valve Head Diameter: 2.D.2.a. Intake: 50.8 mm 2.D.2.b. Exhaust: 40.1 mm 2.E. Intake Port Dimensions 2.E.1. At Intake Manifold Face 2.E.1.a. Height: 55.9 mm 2.E.1.b. Width: 30.5 mm 2.E.2. Intake Port Work Allowed: Yes 2.E.2.a. Depth From Face: 25.4 mm 2.F. Exhaust Port Dimensions 2.F.1. At Exhaust Manifold Face: 2.F.1.a. Height: 34.5 mm 2.F.1.b. Width 36.3 mm 2.F.2. Exhaust Port Work Allowed: Yes 2.F.2.a. Depth From Face: 25.4 mm 2.G. Piston and Connecting Rod 2.G.1. Connecting Rod Length: 2.G.1.a. Stock: 158.55 mm 2.G.1.b. Approved: 158.45-158.65mm 2.G.2. Reciprocating Assembly Mass: 2.G.2.a. Stock: 1262 g 2.G.2.b. Minimum: 1210 g 2.G.3. Aftermarket Rods Allowed: Yes 2.G.4. Aftermarket Pistons Allowed: Yes 2.H. Camshaft 2.H.1. Part Number: 04763708AD or 2.H.2. SCCA Profile Number: ViperCC.1A 05037057XX casting # 2.H.3. Rocker Arm Ratio: 1.73:1 2.H.4. Valve Actuation: Pushrod 2.H.5. Type of Cam Follower: Hydraulic Roller 2.I. Crankshaft 2.I.1. Part Number: 050AC 2.I.2. Stock Mass: 38.5 kg with sprocket 2.I.3. Minimum Mass: 38.5 kg with sprocket 2.J. Flywheel 2.J.1. Stock Ring Gear Diameter: 365 mm Date Issued: 2.11.2009 Version Number: 6 Version Date: 2/3/2012 Page: 2 of 6
2.L. Intake Manifold 2.L.1. Part Number: 05037194XX 2.L.2. Stock Port at Cylinder Head Face: 2.L.2.a. Height: 56.1 mm 2.L.2.b. Width: 30.7 mm 2.L.3.a. Allow Port Match to Head: Yes 2.L.3.b. Port Matching Depth: 25.4 mm 2.L.4.a. Throttle Body Bore Dia.: 65.4 mm 2.L.4.b. Throttle Body Part Number: 05037112XX 2.L.5. Number of Throttle Bodies: 1 2.L.6. Butterflies per Throttle Body: 2 2.L.7. Intake Manifold Material: Aluminum 2.L.8. Manifold Pieces: 1 2.L.9.a. Intermediate Port Matching Allowed: No 2.L.9.b. Depth from Face: Not Applicable 2.M. Required Engine Seal Locations 2.M.1. Valve Cover Seal #1: 2.M.2. Valve Cover Seal #2: 2.M.3. Oil Pan Seal #3: 2.M.4. Intake Manifold Seal #4: 2.N. Engine Miscellaneous: No-lift shift electronic driver aid is permitted. Left front inner valve cover bolt. Right front inner valve cover bolt. Left front corner oil pan bolt. Driver s side #5 cylinder bolt. All engines must be electronically sealed by a designated Pro Racing official. Contact the TECHNICAL MANAGER for details. Diamond pistons p/n: 56384, Mahle pistons (Dodge p/n: 05045306XX) and Carrillo connecting rods (Dodge p/n: 05045309XX) may be installed. The total weight of the reciprocating assembly must be equal to, or greater than, the minimum weight listed on the VTS sheet. Cars using an aftermarket ECU/data system to improve their traction/launch control shall add 20 lbs. to the Appendix A base weight. Cars using the Dodge Motorsports ECU will have a sealed one provided to them at the beginning of the weekend by Dodge Motorsports engineers. MOPAR part # P5156137 allowed which includes cylinder heads, intake manifold, head gaskets, rocker covers, fuel rail with injectors, rocker arms and bolts, exhaust bolts, coil packs, coil covers. head studs. This engine configuration will have a different restrictor assigned to it. see Appendix A? 3. Drivetrain 3.A. Transmission Option 1 3.A.1. Number of Forward Speeds: 6 3.A.2. Manufacturer: Tremec 3.A.3. Gear Ratios: 3.A.3.a. 1st: 2.66 3.A.3.b. 2nd: 1.78 3.A.3.c. 3rd: 1.30 3.A.3.d. 4th: 1.00 3.A.3.e. 5th: 0.85 3.A.3.f. 6th: 0.75 3.A.4. Gear Shift Pattern: H Pattern 3.A.5. Gear Engagement Dog-Ring or Synchromesh 3.A.6. Gear Type Helical 3.B. Transmission Option 2 3.B.1. Number of Forward Speeds: 6 3.B.2. Manufacturer: Tremec TR6060 3.B.3. Gear Ratios: 3.B.3.a. 1st: 2.664 3.B.3.b. 2nd: 1.818 3.B.3.c. 3rd: 1.302 3.B.3.d. 4th: 1.000 3.B.3.e. 5th: 0.741 3.B.3.f. 6th: 0.503 3.B.4. Gear Shift Pattern: H Pattern 3.B.5. Gear Engagement Syncromesh Date Issued: 2.11.2009 Version Number: 6 Version Date: 2/3/2012 Page: 3 of 6
3.C. Transmission Option 3 3.C.1. Number of Forward Speeds: 6 3.C.2. Manufacturer: Hollinger RD6S 3.C.3. Gear Ratios: 3.C.3.a. 1st: 2.296 3.C.3.b. 2nd: 1.593 3.C.3.c. 3rd: 1.242 3.C.3.d. 4th: 1.000 3.C.3.e. 5th: 0.843 3.C.3.f. 6th: 0.745 3.C.4. Gear Shift Pattern: Sequential 3.C.5. Gear Engagement Dog-Ring 3.D. Transmission Option 4 3.D.1. Number of Forward Speeds: 6 3.D.2. Manufacturer: EMCO DV46 3.D.3. Gear Ratios: 3.D.3.a. 1st: 2.76 3.D.3.b. 2nd: 1.84 3.D.3.c. 3rd: 1.33 3.D.3.d. 4th: 1.00 3.D.3.e. 5th: 0.85 3.D.3.f. 6th: 0.78 3.D.4. Gear Shift Pattern: Sequential 3.D.5. Gear Engagement Dog-Ring 3.E. Transmission Option 5 3.E.1. Number of Forward Speeds: 6 3.E.2. Manufacturer: Quaife QBE69G 3.E.3. Gear Ratios: 3.E.3.a. 1st: 2.40 3.E.3.b. 2nd: 1.58 3.E.3.c. 3rd: 1.18 3.E.3.d. 4th: 0.905 3.E.3.e. 5th: 0.7692 3.E.3.f. 6th: 0.6897 3.E.4. Gear Shift Pattern: Sequential 3.E.5. Gear Engagement Dog-Ring 3.E.6. Input Pair Ratio: 1.105 3.F. Final Drive 3.F.1. Axle Ratio: 3.07, 3.31, or 3.33 3.G. Drivetrain Miscellaneous As of July 15, 2007, the 3.31 final drive may be replaced with the 3.36 final drive when a replacement is needed. When a team changes to the 3.36 final, the 3.31 final may not be used again. The OE 5th gear ratio (0.74) and 6th gear ratio (0.50) may be used in lieu of the specified ratios for Transmission Option 1. The reverse synchronizer, key and springs may be removed. Reverse gear must remain operable. 4. Suspension 4.A. Suspension Type: 4.A.1. Front: Double A-Arm 4.A.1. Rear: Double A-Arm 4.B. Suspension Miscellaneous Anti-roll bar material and dimensions may be changed, but the pick-up points shall be used as supplied by Dodge Motorsports. Alternate shock suppliers may be used provided the mounting points are used as supplied. All other suspension components shall be used as supplied by Dodge Motorsports. Cars that had their suspension pick-up points modified prior to 01/01/2008 will have these modifications grandfathered; passport #239 and 401. 5. Chassis 5.A. See Technical Department for information 5.B. Chassis Miscellaneous Fuel Cell must be in the stock location as supplied by Dodge Motorsports. Cars that relocated their fuel cell prior to 01/01/2008 will have this modification grandfathered; passport #239 and 401. Cars not using ABS may remove 50 lbs from Appendix A base weight. Teams not using ABS shall either have their ABS controller removed, or shall have the ABS controller plug sealed by an official. 6. Body 6.A.1. Stock Coefficient of Drag: 0.562 6.A.2. Total Frontal Area: 2.4 m 2 6.B. Body Overhang: 2.B.1. Front: 1060 mm 2.B.2. Rear: 1195 mm 6.C. Stock Body Materials: Non-Metallic Composite (Carbon Fiber) Date Issued: 2.11.2009 Version Number: 6 Version Date: 2/3/2012 Page: 4 of 6
6.D. Maximum Body Width: 1979 mm 6.E. Permitted Rear Wing Design: 05029357AA (2003-2004); 05030341AA (2005+) 6.F. Body Miscellaneous: Rear diffuser must have all strakes removed, except the outside panels, on vehicles with the 2005 body. Remaining outside strakes must have 13.0mm trimmed from the bottom edge the entire length of the strake. 2005 body updates must be done as a complete package (hood, fascia, splitter, wing). 50mm splitter must be used on vehicles with 2005 body. Vehicles equipped with 2003-2004 body may run 80mm front splitter. Date Issued: 2.11.2009 Version Number: 6 Version Date: 2/3/2012 Page: 5 of 6
Camshaft Profile SCCA Profile Number: Vehicle: ViperCC.1A Viper CC Intake Lobe Cam Lift (in) Duration ( o ) Open Close Area 0.010 268.20 32.0 BTDC 56.2 ABDC 24.27 0.020 250.20 24.4 BTDC 45.9 ABDC 24.14 0.030 238.10 18.9 BTDC 39.2 ABDC 23.99 0.040 228.40 14.3 BTDC 34.1 ABDC 23.82 0.050 220.10 10.4 BTDC 29.8 ABDC 23.63 0.060 212.60 6.7 BTDC 25.9 ABDC 23.42 0.070 205.60 3.3 BTDC 22.3 ABDC 23.20 0.080 199.10 0.1 BTDC 19.0 ABDC 22.95 0.090 192.90 3.0 ATDC 15.9 ABDC 22.69 0.100 186.90 6.0 ATDC 12.9 ABDC 22.40 0.150 158.60 20.2 ATDC 1.2 BBDC 20.64 0.200 130.30 34.5 ATDC 15.2 BBDC 18.16 0.250 98.10 50.7 ATDC 31.2 BBDC 14.52 0.300 51.60 74.1 ATDC 54.3 BBDC 8.08 Maximum Lift: 0.31926 Exhaust Lobe Cam Lift (in) Duration ( o ) Open Close Area 0.010 280.60 58.1 BBDC 42.5 ATDC 25.73 0.020 262.20 50.4 BBDC 31.8 ATDC 25.60 0.030 250.00 44.8 BBDC 25.1 ATDC 25.44 0.040 240.10 40.2 BBDC 19.9 ATDC 25.27 0.050 231.70 36.2 BBDC 15.5 ATDC 25.08 0.060 224.10 32.5 BBDC 11.6 ATDC 24.87 0.070 217.00 29.0 BBDC 8.0 ATDC 24.65 0.080 210.30 25.7 BBDC 4.6 ATDC 24.39 0.090 204.00 22.6 BBDC 1.4 ATDC 24.12 0.100 197.80 19.5 BBDC 1.7 BTDC 23.83 0.150 168.60 4.9 BBDC 16.2 BTDC 22.01 0.200 139.10 10.1 ABDC 30.8 BTDC 19.42 0.250 105.20 27.2 ABDC 47.6 BTDC 15.59 0.300 56.00 51.9 ABDC 72.0 BTDC 8.78 Maximum Lift: 0.31980 Permitted Cam Tolerances Camshafts used for this car must meet the specifications above within the following tolerances: Duration at the seat (From 0.020 lift to 0.030 lift) +/- 6.5 degrees Duration on flank (From 0.100 lift to 0.100 before maximum lift) +/- 4.0 degrees Duration over nose (From 0.100 before maximum lift up to maximum lift) +/- 6.0 degrees Maximum Lift (This tolerance applies to maximum lift only) +/- 0.005 in (0.127 mm) Date Issued: 2.11.2009 Version Number: 6 Version Date: 2/3/2012 Page: 6 of 6