Camshafts
Jaguar: All Jaguar fitted with XK engines (1949-92): XK120, XK140 and XK150 (1949-61) • E-Type Series 1 and 2 (1961-70) • Mark I 3.4 (1957-59) • Mark II 3.4, 340 and 3.8 (1959-69) • S-Type 3.4 and 3.8 (1963-68) • 420 and Daimler Sovereign (1966-69) • Mk7, Mk8 and Mk9 (1950-61) • Mk10 (1961-66) • 420G (1966-70) • XJ6 Series I, II and III (1968-87) • Daimler DS420 Limousine and Hearse (1968-92)
new items - 282° ‘Fast Road’ specification. Technical data. Power band 2000 to 6500 rmp, valve timing 35/67 and 67/35, cam lift 0.415", valve clearance 0.006 and 0.008". Supplied in pairs
In 1968, Jaguar changed the lobe pattern of the camshafts. This was not an emission change but rather a change to smooth out the tappet noise. The lobe engaged the tappet more gently rather than slapping. These cams can be installed in the earlier engines for a quieter running engine with no noticeable loss of power or smoothness. Just make sure that the adjustment is correct for the camshafts, not the year car. These cams adjust 0.012 to 0.014".