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View Full Version : verify those valve train clearances, geometry etc.


grumpyvette
02-01-2011, 08:18 AM
most sbc factory heads will allow a lift of about .470 with the factory springs and clearances, a few will allow up to .530, but the only way you can be sure is to verify clearances

http://forum.grumpysperformance.com/viewtopic.php?f=52&t=181

http://forum.grumpysperformance.com/viewtopic.php?f=52&t=282

http://forum.grumpysperformance.com/viewtopic.php?f=50&t=501&p=11829&hilit=+piston+valve+clearance#p11829




http://www.grumpysperformance.com/valvespringinstalled.gif

http://www.grumpysperformance.com/ValveSpringClearance.gif

http://www.grumpysperformance.com/springheightcheck.jpg
http://static.summitracing.com/global/images/prod/large/cca-4929.jpg
using a valve spring micrometer and measuring spring bind helps verify clearance


the result of not verifying valve train clearances,full lubrication and valve spring load rates
http://www.grumpysperformance.com/valveinpiston.jpg
http://www.grumpysperformance.com/valvespring3.JPG






http://www.grumpysperformance.com/091.jpg
http://www.grumpysperformance.com/082.jpg
http://www.grumpysperformance.com/088.jpg
http://www.grumpysperformance.com/lg_car28.JPG
http://www.grumpysperformance.com/camlobe3.jpg
http://www.grumpysperformance.com/camlobeq.jpg

WOODY31
02-01-2011, 11:04 AM
those pics make my wallet hurt nice info there

nowukno
02-01-2011, 08:14 PM
Yea,that cam and lifters are going nowhere fast

Doober
02-02-2011, 06:15 PM
Make sure you're reading the valvespring height mic correctly as well. I was showing 1/8" more on every valve when I discovered I actually only needed to shim the exhaust valves .060".

sscamino
02-03-2011, 01:13 AM
Lots of cool/great pics in there!