Cams

[QSHIPQ <QSHIPQ@aol.com>]

Some thoughts on the cam thread that fell off recently:

*  Ned:  Yes the 130hp N/A cam is the same as the turbo cam, or vice versa
more specifically, and the turbo cam has the lobe for the vacuum pump even.
*  Most of the thread deals with "turbo" cams in "N/A" motors, in actuality,
it's the other way around, most turbo cams, even performance ones are rooted
in the N/A family tree.  The schrick 268/272/276 are all N/A cams, so is the
ABT 300 (anderson/ex-Lawson), and yes it pulsates the CIS flap.  The Schrick
272 has the highest lift of the 3 common above, and is a good turbo cam, btdt.
*  On the 10vt motor, the cam is really where the tweeksters should spend some
time/dollars.  If one reads up on what some of the tuners did in the 80's, the
cam development was limited, but very successful.
*  Bruce Bell did a very good job of explaining the differences in cams N/A vs
turbo,  a good archive reference.  I have also seen his charted cam comparos
on his 4kq, and the difference was measureable.
*  Avoid the press on lobe type cams, several stories of problems, really
expensive ones at that.
*  High lift, little overlap for turbo cars is the ticket.  Really high lift?
Those mechanical valve heads may not be sea anchors after all....

My .02

Scott Justusson
'87 5ktqw
'86 5ktqw
'84 Urq