Cam Swap

[ECMnut at aol.com]

A set of headers really helps these trucks.  WHo ground
the cam, if you don't mind my asking.  Seem like those
roller cams are costly buggers. Backe to the exhaust, have you 
done anything there?
Regarding your 're-tune', if it is still idling okay, you're prolly alright.
If you can borrow a scan tool, you could watch the o2 sensor under
W.O.T. conditions to make sure there is enough fuel...
Mike V
 
> I just swapped the cam out in my 94 Sonoma with a TBI 4.3 the
>  results were very unspectacular, nearly imperceptible.  I went from a
>  cam with a 110 degree centerline, 179 intake / 194 exhaust degrees
>  duration @.050 and .349 intake and .384 exhaust lift to 112 degree
>  centerline, 207 intake / 207 exhaust degrees duration @.050 and .442
>  intake and .442 exhaust lift.  A K&N filter is the only other
>  powertrain mod.  Do I need to do a VCM retune to realise benefits from
>  this cam swap or are further hardware modifications in order.  I am
>  also thinking about using a degree wheel to make sure the cam grinder
>  phased the cam properly although since it is a regrind it would be
>  nearly impossible to get the timing too far out.
>