types/Classes of racing

SVRA Vintage racing: (280Z is Historic B-Production, group 8) (L-Jetronic allowed), 2250 lbs,

SVRA Supplemental Regulations: (last revised 10/21/2004) Datsun (Nissan) 260Z, 280Z (1974-1978)

as prepared for SVRA Group 8, Class B-Production

The following cars are covered under these regulations: 1974-1975 Datsun 260Z (2565cc,SOHC I-6)

1975-1978 Datsun 280Z (2753cc, SOHC I-6)

Note: Includes 240Z updated to 260 or 280 specifications ------------------------------------------------------------------------

Engines: .047” (1.2mm) maximum overbore allowed L26 (2565cc)

Bore x stroke 3.2677” x 3.11” L28 (2753cc) Bore x stroke 3.39” x 3.11”

Head material……….aluminum

Block material………cast iron

Carburetion………….three 44PHH Mikuni or two Hitachi HJG 46W or equivalent (SU)