Ecotec cams

[sircruisealotVS]

yeah, you guys are getting a bit confused i think, you times the rocker ratio by the LOBE LIFT not valve lift...and on the crow site it doesnt have the lobe lift figures, only the valve lift, which is basically been worked out already for you assuming the stock 1.6:1 ratio.
if you divide 472 by 1.6 you get 295, which is the lobe lift for the stage 2 crow cam.
so with a 1.95 ratio your looking at .575" total valve lift.

 

[vxcalais_01]

Thanks for that mate, that means it should be fine ???

Duration at 50thou is 213 on both intake and exhaust with 312 lift at the
> camshaft(multiply by your rocker ratio) ground on a 114 lobe separation.

This is how camtech cams told me to work it out for a cam they offered for ecotec with 1.95's.

 

[sircruisealotVS]

yeah...little sketchy on stock heads maybe, best to get some good advice off an engine builder or something just to be 100% sure.

 

[beardy91]

Check out V6 Camshaft Specifications in V6 Development and Modification for the standard camshaft specifications and some aftermarket camshaft specifications.