Camshafts - March 2002
|Over the years we have sold around 1200 pairs of modified
camshafts for Alfa Romeo cars, in fact many of you reading
this page will have experience of them. Nowadays, sadly
the vast choice is no longer available, but twenty-five
years ago it was possible to buy a set for virtually every
model of Alfa from the 1900 SS and 2600 to Giulietta Sprint
and Giulia TI.
But in the UK in the 1960s thr choice was very
limited, for example 10106 Veloce camshafts could be used to
modify a standard 1300 engine, or 10121 'SS' camshafts for the
1600, although the latter tended to be peaky and lobe life extremely
short. There were alternatives, for instance at Rob Walkers'
famous Corsley Garage, where I worked in the 1960s, we used
David Newman shafts which were ground to, believe it or not,
Lotus profiles---these only really worked well at high rpm and,
life all reground camshafts came with that age-old headache
of requiring especially made thick adjusting shims. Furthermore,
as is again always the case with reground camshafts, cam follower
(bucket) life was shortened considerably.
|For the very affluent there was an alternative which really
worked, the only worthwhile method of achieving added performance
while retaining flexibility. This mystical, yet much desired
method of motoring could be attained by ordering a pair
of Autodelta camshafts, which were available, at considerable
expense---and a lengthy wait, through Alfa Romeo (Great
Britain). Just one style was available for road used, initially
for 1600 engines but later also used in the 1750cc, this
was the 10.5mm lift with 70/30 30/70 timing which, for fast
road driving, offered far superior performance than the
older 10121 "SS" camshafts.
|V6 Dyno Test
Click to enlarge
In order to avoid confusion, although providing
a lift of 10.5mm these camshafts were (and still are)
referred to as the "10.6 type". In my collection of Autodelta
factory literature I have a performance dynomometer chart
'elaborazioni stradali motori' which shows 10.6 camshafts
in a 1600cc engine producing 137.2 bhp at 7000 rpm, the
only other modifications being free-flow air filters and
a GTA exhaust manifold. Apparently GTA swivelling trumpets
(which we still sell at E.B.Spares) added a further 7bhp
at 7000 rpm !!
I am often asked which camshafts would be
suitable for a totally contemporary 1960s or early 1970s
road/rally car (1300, 1600, 1750). For authenticity it
can only be the old '10.6' type, although the 11mm, which
arrived in the mid-1970s, offered some useful improvement,
in fact we have sold more of the latter than all the others
ORDER YOUR CAMSHAFTS NOW !!!!
(Camshafts are still manufactured by the original Italian company)
We do not publish lists of camshafts as we want
to advise which pair would be most suitable for your requirements.
Camshafts make such a tremendous improvement to the Alfa Romeo
engine but they can also make it untractable, so you must receive
the correct information---which is where we come in ! Ask for
our help, we will ensure you purchase the correct pair for your
We stock camshafts for 1300/1600/1750/2000 engines,
75 TS and 3.0 and 164, road, rally and race specifications are
Latest to arrive are high and medium RPM fast
road for 16 valve engines - 156,new GTV and Spider.