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View Full Version : smallblock standard cams - lift / duration


jimbob-mcgrew
07-02-13, 06:07 PM
does anyone have the lift and duration figures of the smallblock 8v cams ? 1.2/1.3/1.4/1.6 please, cheers :thumb:
Adam
07-02-13, 06:10 PM
Lift is in the Haynes manual.
IIRC standard duration was something like 250. Thats from rough memory from years ago though.
jimbob-mcgrew
07-02-13, 06:34 PM
it has journal diameters 1 to 5 39.435 to 40.450 mm , not even sure what that means, im gonna have to look up journal in the bloody dictionary cos im thick as sh1t
jimbob-mcgrew
07-02-13, 06:54 PM
pftt no idea on that one, i'll just have to measure them myself and take a gamble
jimbob-mcgrew
07-02-13, 06:55 PM
oh adam, while your here, i saw in your project thread youve filled alot of inlet manifolds.
did you have an problems with any of those ? the stuff breaking up, or iffy fueling ?
what did you use, chemical metal ?
garyc
07-02-13, 07:01 PM
You will find some values on the cat cams site. Lift is the height the valve moves of the seat. Duration is the amount of degrees the valve is open for.
jimbob-mcgrew
07-02-13, 07:09 PM
thats the one gary, cat cams, ill check it out :thumb:
meritlover
08-02-13, 08:36 AM
it has journal diameters 1 to 5 39.435 to 40.450 mm , not even sure what that means, im gonna have to look up journal in the bloody dictionary cos im thick as sh1t

That's the bearing tolerances. Nothing to do with lift or duration.
jimbob-mcgrew
08-02-13, 12:19 PM
i think its something to do with something, as the 2.0 model is 3mm more.
doesnt make much sense to me tho, i looked online about it, apparently its taken from 2 measurements, the minimum and the maximum, divided or something ?
_Jake
08-02-13, 12:50 PM
2.0 camshafts wont fit in a small block if thats what your after
Adam
09-02-13, 05:21 PM
oh adam, while your here, i saw in your project thread youve filled alot of inlet manifolds.
did you have an problems with any of those ? the stuff breaking up, or iffy fueling ?
what did you use, chemical metal ?
Yeah ive done it on a quite a few inlets. But it broke down over time. I suppose to due to being exposed constantly to petrol and vibration.
jimbob-mcgrew
10-02-13, 02:04 PM
:thumb: i thought possibly. needs to be welded ideally im guessing