How to adjust valve clearences on a SOLID cam

[Mr Monte]

Just setting the valves on my Pontiac 400. I have put a comp 282 solid cam in and I was wondering what the proper way to set the valve clearences?

[89vert]

i'd use a feeler gauge ;D

[Glenn91L98GTA]

Make sure you find out whether you need to set the "lash" hot or cold. Typically, most solid cams quote the lash needed when "hot". And there is a big difference between hot and cold.

To adjust them, slow tighten down on the poly-lock (assuming full roller rockers) until you come to "zero lash". Zero lash is where you start to feel resistance when you twirl the pushrod under the rocker. Similar as you would do if you were going to adjust a hydraulic lifter.

Then, unlike a hydraulic lifter, you back off/loosen the polylock to obtain the proper lash with a feeler guage. Example, if the required lash is .018", use a .018" feeler gauge under the roller and the top of the valve.

[Mr Monte]

I was setting the valves with the opposite valve at full lift. I need to know when to set the valves.

[79 Z28]

i dont know if pontiac has the same valve order as chevy but heres the chevy one if it helps lol

******VALVETRAIN LASH SETUP
__________________________________________________ ________________________________



***CRANK POSITION*********INTAKE******EXHAUST

***#1 TDC FIRING************#2 & #7******#4 & #8

***ROTATE 180 DEG*********#1 & #8******#3 & #6
***CLOCKWISE TO #4 TDC

***ROTATE 180 DEG*********#3 & #4******#5 & #7
***CLOCKWISE TO #6 TDC

***ROTATE 180 DEG*********#5 & #6******#1 & #2
***CLOCKWISE TO #7 TDC
__________________________________________________ ________________________________

[Dunout]

i dont know if pontiac has the same valve order as chevy but heres the chevy one if it helps lol

******VALVETRAIN LASH SETUP
__________________________________________________ ________________________________



***CRANK POSITION*********INTAKE******EXHAUST

***#1 TDC FIRING************#2 & #7******#4 & #8

***ROTATE 180 DEG*********#1 & #8******#3 & #6
***CLOCKWISE TO #4 TDC

***ROTATE 180 DEG*********#3 & #4******#5 & #7
***CLOCKWISE TO #6 TDC

***ROTATE 180 DEG*********#5 & #6******#1 & #2
***CLOCKWISE TO #7 TDC
__________________________________________________ ________________________________


whats he said thats how i do mine all the time

[allpontiacs]

That will work fine with the Poncho.

[79 Z28]

8) 8) 8)