1975-1976Base · L4.2189cc
Notes: Solid Flat Tappet; 800-4500rpm; Adv. Dur. 255 Int./Exh.; Valve Lift .420 Int./Exh.; Lobe Angle 110 deg.;
1975-1980DLX · L4.2189cc
Notes: Solid Flat Tappet; 800-4500rpm; Adv. Dur. 255 Int./Exh.; Valve Lift .420 Int./Exh.; Lobe Angle 110 deg.;
1975-1977SR5 · L4.2189cc
Notes: Solid Flat Tappet; 800-4500rpm; Adv. Dur. 255 Int./Exh.; Valve Lift .420 Int./Exh.; Lobe Angle 110 deg.;
1977-1978Custom · L4.2189cc
Notes: Solid Flat Tappet; 800-4500rpm; Adv. Dur. 255 Int./Exh.; Valve Lift .420 Int./Exh.; Lobe Angle 110 deg.;
1979-1980LE · L4.2189cc
Notes: Solid Flat Tappet; 800-4500rpm; Adv. Dur. 255 Int./Exh.; Valve Lift .420 Int./Exh.; Lobe Angle 110 deg.;
1981-1982DLX · L4.2366cc
Notes: Solid Flat Tappet; 800-4500rpm; Adv. Dur. 255 Int./Exh.; Valve Lift .420 Int./Exh.; Lobe Angle 110 deg.;
1981-1982LE · L4.2366cc
Notes: Solid Flat Tappet; 800-4500rpm; Adv. Dur. 255 Int./Exh.; Valve Lift .420 Int./Exh.; Lobe Angle 110 deg.;