March 29, 2023 – The NMCA Tech Committee issued today these class rule reminders to all NMCA Factory Super Car Racers.
Drivetrain - AUTOMATIC TRANSMISSION rules include:
Any model transmission, same make as car, with a maximum of three forward speeds. Transmission case must be OEM or aftermarket OEM replica from a standard, automotive application as found in the Official NHRA Stock Car Classification Guide. Aftermarket case must meet SFI Spec. 4.1. NHRA-accepted adapter plates permitted. Modifications to shifting patterns are permitted, provided full shift pattern is retained. Full shift pattern must include park and reverse. Any gear change must occur as a result of an internal function of the transmission or from direct action by the driver. Shifting with the use of pneumatic, electric, hydraulic, etc. is prohibited. Lockup converters of any kind are prohibited. Wires for a trans brake, line lock, starting line enhancer (bump box), wheel speed, driveshaft speed or GPS signal to transmission prohibited. Deepened stock or aftermarket transmission oil pans permitted. Functional neutral safety switch mandatory. Transmission brake prohibited. Starting line staging devices are prohibited. Tailshaft modifications for bushing replacement, or NHRA-accepted aftermarket tailshaft permitted. Must be equipped with a transmission shield meeting SFI Spec 4.1. Any car running quicker than 9.99, SFI 29.1 automatic transmission flexplate and SFI 30.1 flexplate shield mandatory. See General Regulations 2:12, 2:14
Lockup Torque Convertor prohibited.
Accepted supercharger Combination Upper and Lower Pullies are limited to:
YEAR BRAND CID/HP SUPERCHARGER UPPER __ LOWER
2014-2015 Camaro COPO 350 530 HP 2.9L Whipple 3.250 8.000
2016-2018 Camaro COPO 350 580 HP 2.9L Whipple 3.250 8.000
2017-2018 Camaro COPO 350 590 HP 2.9L Whipple 3.125 8.000
2019-2022 Camaro COPO 350 630 HP 2.65L Magnuson 32J/34R 3.125 8.000
2015 Challenger Drag Pak 354 540 HP 2.9L Whipple 3.000 7.950
2021 Challenger Drag Pak 354 630 HP 3.0L Whipple 3.375 8.000
2010 Mustang Cobra Jet 330 500 HP 2.9L Whipple 3.970 8.125
2012 Mustang Cobra Jet 330 510 HP 2.9L Whipple 3.970 8.125
2013 Mustang Cobra Jet 302 500 HP 2.9L Whipple 3.500 8.000
2014 Mustang Cobra Jet 302 525 HP 2.9L Whipple 3.375 8.000
560 HP 2.9L Whipple 3.000 8.000
2016 Mustang Cobra Jet 302 565 HP 2.9L Whipple 3.250 8.000
575 HP 2.9L Whipple 3.250 8.000
2019 Mustang Cobra Jet 327 610 HP 3.0L Whipple 3.500 6.938
2019 Mustang Cobra Jet 351 570 HP 2.9L Whipple 3.500 8.000
Accepted ECU and Firmware are limited to the following and must utilize the RPM limits listed.
NMCA Rules can be found here: https://www.nmcadigital.com/classes-and-rules/c21
Email Rule Questions or Requests to: [email protected]
Drivetrain - AUTOMATIC TRANSMISSION rules include:
Any model transmission, same make as car, with a maximum of three forward speeds. Transmission case must be OEM or aftermarket OEM replica from a standard, automotive application as found in the Official NHRA Stock Car Classification Guide. Aftermarket case must meet SFI Spec. 4.1. NHRA-accepted adapter plates permitted. Modifications to shifting patterns are permitted, provided full shift pattern is retained. Full shift pattern must include park and reverse. Any gear change must occur as a result of an internal function of the transmission or from direct action by the driver. Shifting with the use of pneumatic, electric, hydraulic, etc. is prohibited. Lockup converters of any kind are prohibited. Wires for a trans brake, line lock, starting line enhancer (bump box), wheel speed, driveshaft speed or GPS signal to transmission prohibited. Deepened stock or aftermarket transmission oil pans permitted. Functional neutral safety switch mandatory. Transmission brake prohibited. Starting line staging devices are prohibited. Tailshaft modifications for bushing replacement, or NHRA-accepted aftermarket tailshaft permitted. Must be equipped with a transmission shield meeting SFI Spec 4.1. Any car running quicker than 9.99, SFI 29.1 automatic transmission flexplate and SFI 30.1 flexplate shield mandatory. See General Regulations 2:12, 2:14
Lockup Torque Convertor prohibited.
Accepted supercharger Combination Upper and Lower Pullies are limited to:
YEAR BRAND CID/HP SUPERCHARGER UPPER __ LOWER
2014-2015 Camaro COPO 350 530 HP 2.9L Whipple 3.250 8.000
2016-2018 Camaro COPO 350 580 HP 2.9L Whipple 3.250 8.000
2017-2018 Camaro COPO 350 590 HP 2.9L Whipple 3.125 8.000
2019-2022 Camaro COPO 350 630 HP 2.65L Magnuson 32J/34R 3.125 8.000
2015 Challenger Drag Pak 354 540 HP 2.9L Whipple 3.000 7.950
2021 Challenger Drag Pak 354 630 HP 3.0L Whipple 3.375 8.000
2010 Mustang Cobra Jet 330 500 HP 2.9L Whipple 3.970 8.125
2012 Mustang Cobra Jet 330 510 HP 2.9L Whipple 3.970 8.125
2013 Mustang Cobra Jet 302 500 HP 2.9L Whipple 3.500 8.000
2014 Mustang Cobra Jet 302 525 HP 2.9L Whipple 3.375 8.000
560 HP 2.9L Whipple 3.000 8.000
2016 Mustang Cobra Jet 302 565 HP 2.9L Whipple 3.250 8.000
575 HP 2.9L Whipple 3.250 8.000
2019 Mustang Cobra Jet 327 610 HP 3.0L Whipple 3.500 6.938
2019 Mustang Cobra Jet 351 570 HP 2.9L Whipple 3.500 8.000
Accepted ECU and Firmware are limited to the following and must utilize the RPM limits listed.
ACCEPTED ECU AND FIRMWARE | |||||
MANUFACTURE | PART DESCRIPTION | MAKE | SOFTWARE | FIRMWARE | RPM LIMIT |
HALTECH | NEXUS-R5 | CHEVROLET | V1.14.1 | V1.14.1-Release-1-NMCA-Chevy-10200.nex | 10200 |
BIG STUFF 3 | GEN 4 | CHEVROLET | GEN4-STACK | gen4-stack-””-NewAccel_COPO_DPAK | 10200 |
FUELTECH | FT450, FT550, FT600 | CHEVROLET | 4.81 / 4.90 |
FT450 NMCA 10200RPM FT550 NMCA 10200RPM FT600 NMCA 10200RPM |
10200 |
HOLLEY | DOMINATOR or HP EFI | CHEVROLET | V6 BUILD 220 | HEFI_06002310_DOCH.EEP | 10200 |
MOTEC | M1DOMINATOR or HP EFI50 | CHEVROLET | nmcafactorysupercarsfirmware | 10200 | |
HALTECH | NEXUS-R5 | DODGE | V1.14.1 | V1.14.1-Release-1-NMCA-Dodge-10200.nex | 10200 |
BIG STUFF 3 | GEN 4 | DODGE | GEN4-STACK | gen4-stack-””-NewAccel_COPO_DPAK | 10200 |
FUELTECH | FT450, FT550, FT600 | DODGE | 4.81 / 4.90 |
FT450 NMCA 10200RPM FT550 NMCA 10200RPM FT600 NMCA 10200RPM |
10200 |
HOLLEY | DOMINATOR or HP EFI | DODGE | V6 BUILD 220 | HEFI_06002310_DOCH.EEP | 10200 |
MOTEC | M150 | DODGE | nmcafactorysupercarsfirmware | 10200 | |
HALTECH | NEXUS-R5 | FORD | V1.14.1 | Nexus-R5-V1.14.1-Release-6-NMCA-Ford-10200.nex | 10200 |
BIG STUFF 3 | GEN 4 | FORD | GEN4-STACK | gen4 stack ”” NewAccel_SCJ 2 | 10200 |
FUELTECH | FT450, FT550, FT600 | FORD | 4.81 / 4.90 |
FT450 NMCA 10200RPM FT550 NMCA 10200RPM FT600 NMCA 10200RPM |
10200 |
HOLLEY | DOMINATOR or HP EFI | FORD | V6 BUILD 220 | HEFI_06002300_FORD.eep-V5 BUILD 182 | 10200 |
MOTEC | M150 | FORD | nmcafactorysupercarsfirmware | 10200 |
NMCA Rules can be found here: https://www.nmcadigital.com/classes-and-rules/c21
Email Rule Questions or Requests to: [email protected]