If he has fitted 'vernier' adjust type cam gears he can,if he uses a degree wheel & DTI,get the 'stock' cam timing 'dead on' spec.If not its only for looks!A vernier drive sprocket(s) give you the ability to 'tune in' aftermarket cams to the exact timing map but unless DTI etc are used its pointless having them...TH HMS Inc

V6 MTX
'Don't p**s up my back then tell me it's raining!!!"
'Its only nuts & bolts!'
'If I build it,fix it,upgrade it or modify it...MAYBE they will come....!
Haines Motor Sports Inc,
Dealer for 'Quaife America' & 'Autotech Sport Tuning'
SOLE USA Dealer for the American Axle 'AUSSIE BAR'...
Get a Turbo for you Zetec from HMS Inc...by 'The Demon' ...www.DemonDynamics.co.uk
..don't talk about it DO IT !!!