American Challenge

Sports car racing category

1979 AMC Sprint AMX

American Challenge, also known as the All American Challenge, and formally known as the Kelly American Challenge, was a category and set of regulations for grand tourer cars in sports car racing, specifically in the IMSA GT Championship, between 1977 and 1989. Similar to the AAGT class, these cars were All-American, use a maximum of 5 forward gears, and use a steel tube frame (similar to the type used in SCCA Trans-Am Series cars).[1][2][3]

## References[edit]

1. ^ Lohnes, Brian (March 26, 2022). "1981 IMSA Kelly American Challenge Series From Lime Rock". BangShift.com.
2. ^ "IMSA Sedan racing". www.geocities.ws.
3. ^ Annis, Casey (March 12, 2019). "IMSA on a Budget—Part 2, The American Challenge Series – Page 3 of 4".

* v
* t
* e

Classes of auto racing

Formula
racing|

| Active|

* F1
* F2
* F3
* F4
* F600
* Formula 1000
* Formula Atlantic
* Formula Car Challenge
* Formula Continental
* Formula E
* Formula Enterprises
* Formula Ford
* FF1600
* Formula Regional
* GB3
* Formula Vee
* IndyCar
* Super Formula
* S5000
* Supermodified
* BOSS GP
* Monoposto Racing Club
* V de V Challenge Monoplace

|

Defunct|

* F3000
* F5000
* Formula A (SCCA)
* Formula B (SCCA)
* Formula C (SCCA)
* FCJ
* Formula Dream
* Formula Holden
* Formula Junior
* Formula Libre
* Formula Mondial
* Formula Pacific
* Formula Super Vee
* Australian National Formula
* Grand Prix Masters
* Grand Prix motor racing
* Tasman Series

One-make
formulae|

| Active|

* Ferrari Challenge
* Formula Car Challenge
* Formula Enterprise
* Global MX-5 Cup
* Indy NXT
* Lamborghini Super Trofeo
* MRF Challenge
* Porsche Carrera Cup
* SRF
* USF2000
* USF Juniors
* FIA Formula Championship
* 2
* 3
* S5000

|

Defunct|

* A1GP
* ADAC Formel Masters
* Audi LMS
* Auto GP
* Barber Pro
* CFGP
* FA1
* Formula Asia
* Formula
* Abarth
* Alfa
* BMW
* Chrysler
* König
* LGB
* Swift
* Hyundai
* Lightning
* Maruti
* Masters
* China
* Russia
* Mazda
* Nissan
* Opel/Vauxhall
* Palmer Audi
* RUS
* Rolon
* Formula Renault
* 2.0L
* Grand Prix Masters
* GP2
* GP3
* International Formula Master
* Toyota Racing Series
* Trofeo Maserati
* Superleague Formula
* W Series

Karting|

* KF1
* KF2
* KF3
* KZ1
* KZ2
* Superkart
* Electric

Touring
car racing|

| Active|

* BTCC
* NGTC (TCN-1)
* TCR (TCN-2)
* Stock Car Brasil
* Stock Car Light
* Supercars
* Turismo Nacional
* Turismo Nacional BR
* TC2000

|

Defunct|

* Appendix J
* BTC-T
* Group 1
* Group 2
* Group 5
* Group A
* Group C
* Group E
* Group F
* Group G
* Group H
* Group N
* Aus
* Group S
* Class 1
* Class 2
* Super 2000
* Diesel 2000
* DTM
* ETCR
* Superstars
* V8Star
* WTCC
* WTCR

Stock
car racing|

| Active|

* ARCA
* Allison Legacy Series
* IMCA Sport Compact
* Late model
* Legends
* Modifieds
* NASCAR
* Cup
* Xfinity
* Truck
* Pinty's
* Whelen Euro Series
* Mexico
* SRX
* Super Stock
* Street Stock
* Turismo Carretera

|

Defunct|

* ASCAR
* AUSCAR
* IROC

Oval|

* BriSCA F1
* BriSCA F2
* V8 Hotstox
* Hot Rods
* Superstocks
* Sprint car racing
* Midget car racing
* Quarter Midget racing

Rallying|

| Active|

* Groups Rally
* Group Rally1
* Group Rally2
* Group Rally3
* Group Rally4
* Group Rally5
* Group R-GT

|

Defunct|

* Group 1
* Group 2
* Group 4
* Group A
* Group B
* Group S
* Group N
* Group R
* R5
* Super 1600
* Super 2000
* World Rally Car

Sports
prototypes|

| Active|

* LMDh
* LMH
* LMP
* LMP2
* LMP3
* Clubmans

|

Defunct|

* DP
* DPi
* Group 3
* Group 4
* Group 5
* Group 6
* Group 7
* Group A
* Group C
* Group CN
* GC
* GC-21
* IMSA GTP (1981–1993 era)
* LMP
* LMP1
* LMPC
* S2000

Grand
touring|

| Active|

* GT3
* SRO GT2
* GT4
* GT500
* GT300
* Trans-Am

|

Defunct|

* Group 3
* Group 4
* Group 5
* Group B
* Group D
* GT1 (1993–1999)
* GT1 (2000–2012)
* GT2 (1993–1999)
* GT2 (2005–2010)
* GT3 (1998–1999)
* LM GTE
* IMSA
* AAGT
* GTO
* GTS
* GTU
* GTX
* Appendix K
* Group D GT Cars

Drag
racing|

| Active|

* Top Fuel
* Dragster (TF/D)
* Funny Car (TF/FC)
* Top Alcohol
* Dragster (TA/D)
* Funny Car (TA/FC)
* Pro Stock (PS)
* Pro Modified (Pro Mod)
* Gas
* Super Stock
* Super Comp/Quick Rod
* Top Doorslammer
* Altered
* Competition

|

Defunct|

* Top Gas
* Modified
* Pro FWD

Off-road|

* Baja Bug
* Dune buggy
* Rallycross
* Autocross
* Trophy truck
* Group T1
* Group T2
* Group T3
* Group T4
* Group T5
* Truggy
* Side by Side (UTV)

*[v]: View this template
*[t]: Discuss this template
*[e]: Edit this template