VINTAGE MODIFIED CATEGORY (4/GM) Sports cars (850 - 1100) G-Modified (4/BM) Sports ears (over 5.0L) B-modified These cars may also compete in Group 1. Allard JR Cooper-Climax (FWA 1098) Bocar Elva ME (FWA 1098) *Cooper Monaco (2.5L) Lola MM (FWA 1098) Cunningham C4R SVRA GROUP 4 Lotus 9, 11 & 17 (FWA 1098) Devin. SS OSCA MT4 1100 Description and Class List Echidna Tojeiro-Climax (FWA 1098) Revision Date 5/2017 Kellison GT Lister-Chevrolet Eligibility: *Lotus 19 *VINTAGE PRODUCTION Sadler CATEGORY Limited produced sports cars, racing Scarab "specials", Front-engine Formula Cars (4/AP) *Select GT & earlier and GT cars built or in production prior to (4/CM) Sports cars (3.0- 5.0L) production cars 1960. Certain high quality reproduction examples of eligible models may apply C-modified Aston-Martin DB4/GT for acceptance. Appropriate later cars by Allard K1 Chevrolet Corvette (327cid) invitation. Aston-Martin DER & DBS Ferrari 250GT SWB (alloy body) Devin Chevrolet (288cid) Maserati 3500GT/Sebring Background and philosophy: Ferrari (various models) Mercedes 300SL Jaguar C-type & Jaguar specials Jaguar XK120/140/150/150S (3.8L) [disc Group Four consists mainly of sports cars Jaguar D-type & XKSS (3.4/3.8) brakes] that represent the 'Golden Age' of sports Lister-Jaguar Jaguar XKE (3.8L) (SU) car racing in the USA and Europe. Since Maserati 4508 development and technology progressed quite rapidly after 1960, this group open (4/BP) *Select GT & earlier to cars that were in production by the end (4/DM) Sports cars (2.0–3.0L) production of 1959. Certain continuation cars may be D-Modified / Sports cars (1.5- Aston Martin DB4 (3670cc) accepted with prior approval. Post 1959 Chevrolet Corvette (283cid) models may be accepted as appropriate. 2.0L) E-Modified Ferrari 250GT (steel body) Ambro-Triumph Ford Thunderbird (312cid) Modifications: Aston Martin DBR (3.0L) Jaguar XK-120/140/150 (3.8L) [drum brakes] Ferran 250TR, GT, etc. Porsche 356 GS/GT Carrera 1500/1600 Since these cars mostly raced in open Maserati 200s, 300s. Tipo-60 & 61 categories, there will be a lot of variations Maserati A6GCS within a particular make and model that Porsche RS60, RS61 spyder (1.6L) (4/CP) *Select OP & earlier are period correct. Group Four cars are Tojeiro-Ace production expected to have only period (pre-1960) equipment and specifications. It is the AC Ace/Aceca-Bristol (1971cc) responsibility of a competitor to provide (4/FM) Sports cars (1100 - Alfa Romeo Sprint Zagatto documentation for any specification that 1600c) F-Modified thru 1967 Allard J2, J2X, GT (various American V-8 is not generally considered appropriate. power) and early rear engine cars with drum Arnolt-Bristol (1971cc) The intentions of the SVRA regulations brakes Aston Martin DB1 are to update the safety features of the Aston Martin DB2, DB2/4 cars and to maintain the relative Cooper-Climax BMW 507 performance and behavior Elva Mk1 – 5 Chevrolet Corvette (265cid) characteristics of the individual make Elva Mk6 with drum brakes Frazer-Nash (1971cc) and models . Lola MkI Jaguar XK120 (3.4L) Lotus 11, 15, 17 (FWB 1460, FPF 1475) Morgan plus 4 SS Relevant Documents: Lotus 15 (FPF 1475) Lotus 9, 11, & 17 • General Rules and Regulations Maserati 150s Wheels: Wheels may be of an alternate • Make and Model Regulations OSCA MT4 1500 material but must be of a period design. • SVRA Tire Regulations Porsche MK, 550 spyder (1500) Tojeiro-Climax Tires : may not extend beyond the fender Notes : opening at the highest point of the tire. See the SVRA Tire Regulations for approved This group has tire restrictions listed in the tires. 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, FM, GM) 4B- includes (4/AP, BP, CP) .