*VINTAGE PRODUCTION VINTAGE MODIFIED CATEGORY CATEGORY (4/BM) Sports ears (over 5.0L) (4/AP) *Select GT & earlier B-modified production cars SVRA GROUP 4 Allard JR Aston-Martin DB4/GT Description and Class List Anderson Special (Chevrolet 5.7L, V8) Chevrolet Corvette (327cid) Revision Date 1/2018 Bocar Ferrari 250GT SWB (alloy body) Cheetah (Chevrolet 6.2L V-8) Maserati 3500GT/Sebring *Cooper Monaco (2.5L) Eligibility: Mercedes 300SL Cunningham C4R Jaguar XK120/140/150/150S (3.8L) [disc Limited produced sports cars, racing Devin. SS "specials", Front-engine Formula Cars brakes] Echidna Jaguar XKE (3.8L) (SU) and GT cars built or in production prior to Kellison GT 1960. Certain high quality reproduction Lister-Chevrolet examples of eligible models may apply *Lotus 19 (4/BP) *Select GT & earlier for acceptance. Appropriate later cars by Sadler invitation. Scarab production Aston Martin DB4 (3670cc) Background and philosophy: Chevrolet Corvette (283cid) Group Four consists mainly of sports cars (4/CM) Sports cars (3.0- 5.0L) Ferrari 250GT (steel body) that represent the 'Golden Age' of sports C-modified Ford Thunderbird (312cid) car racing in the USA and Europe. Since Jaguar XK-120/140/150 (3.8L) [drum brakes] development and technology progressed Allard K1 Porsche 356 GS/GT Carrera 1500/1600 quite rapidly after 1960, this group open Aston-Martin DER & DBS to cars that were in production by the end Devin Chevrolet (283ci) of 1959. Certain continuation cars may be Ferrari (various models) (4/CP) *Select OP & earlier accepted with prior approval. Post 1959 Ferrari 250 GTO (3.0L) production models may be accepted as appropriate. Kiki MkIll (Ford 5.0L, V-8) Jaguar C-type & Jaguar specials AC Ace/Aceca-Bristol (1971cc) Modifications: Jaguar D-type & XKSS (3.4/3.8) Alfa Romeo Sprint Zagatto Since these cars mostly raced in open Jaguar XKE lightweight coupe Allard J2, J2X, GT (various American V-8 categories, there will be a lot of variations Lister-Jaguar power) within a particular make and model that Maserati 4508 Arnolt-Bristol (1971cc) are period correct. Group Four cars are Porsche 904, 904GTS Aston Martin DB1 expected to have only period (pre-1960) Aston Martin DB2, DB2/4 equipment and specifications. It is the BMW 507 responsibility of a competitor to provide (4/DM) Sports cars (2.0–3.0L) Chevrolet Corvette (265cid) documentation for any specification that D-Modified / Sports cars (1.5- Frazer-Nash (1971cc) is not generally considered appropriate. 2.0L) E-Modified Jaguar XK120 (3.4L) Morgan plus 4 SS The intentions of the SVRA regulations Ambro-Triumph are to update the safety features of the Aston Martin DBR (3.0L) cars and to maintain the relative Ferran 250TR, GT, etc. Wheels: Wheels may be of an alternate performance and behavior Maserati 200s, 300s. Tipo-60 & 61 material but must be of a period design. characteristics of the individual make Maserati A6GCS and models. Porsche RS60, RS61 spyder (1.6L) Tires: may not extend beyond the fender Tojeiro-Ace opening at the highest point of the tire. See Relevant Documents: the SVRA Tire Regulations for approved tires. General Rules and Regulations Make and Model Regulations SVRA Tire Regulations Notes: This group has tire restrictions listed in the SVRA Tire Regulations. Cars denoted with (*) are classified by potential rather than displacement only. Group splitting, if necessary, as follows: 4A- includes (4/BM, CM, DM) 4B- includes (4/AP, BP, CP) .