From Paul Richardson book.
Mk3 Cams were introduced early in 1952, In the interest of mechanical quietness.
Normally the number 3 is stamped on the end of the Camshaft.
The Valve timing obtained with these Cams is Identical to the earlier pattern, And they give no loss of performance in any way.
Due to the quietening ramps, however, The exact opening and closing points of the valves cannot be ascertained, and for this reason the present method is to measure the lift at top and bottom of dead centre with a tolerance of plus or minus three degrees.
There is a bit more, But it will only mess with your head !!, All the lads agree the overlap way is the best, With what we know now.
Looks to me, You have a mk 3 Cam , I think it will be OK. Cheers Bill.
Mk3 Cams were introduced early in 1952, In the interest of mechanical quietness.
Normally the number 3 is stamped on the end of the Camshaft.
The Valve timing obtained with these Cams is Identical to the earlier pattern, And they give no loss of performance in any way.
Due to the quietening ramps, however, The exact opening and closing points of the valves cannot be ascertained, and for this reason the present method is to measure the lift at top and bottom of dead centre with a tolerance of plus or minus three degrees.
There is a bit more, But it will only mess with your head !!, All the lads agree the overlap way is the best, With what we know now.
Looks to me, You have a mk 3 Cam , I think it will be OK. Cheers Bill.