some v-spring info

[grumpyvette]

ok heres the short version

on a stock sbc thats running flat tappet lifters you need the correct valve spring pressures to prevent problems, thats normally in the 105lb to 130 lb range and the open pressure is in the 280lb-310 lb range for flat tappet cams

for more info read the links

 

http://www.edelbrock.com/automotive/head_flow_tech.html

 

http://www.holley.com/HiOctn/TechServ/TechInfo/IECVTTech2.html

 

http://www.compcams.com/Technical/Products/ValveSprings/

 

http://www.cranecams.com/?show=article&id=22&PHPSESSID=3d4ecaa16d3a078db96f3f3826ed2c88

 

http://www.cranecams.com/?show=valveSpringsFAQ&PHPSESSID=5b8e1aa62f2d4f7cb2f705af309b4140

 

 

 

http://www.vincihiperformance.com/LS1%20TECH%20AND%20TUNE%20PAGE%20.HTML

 

http://www.cranecams.com/?show=article&id=16&PHPSESSID=5b8e1aa62f2d4f7cb2f705af309b4140

 

http://carprogrammer.com/Z28/LT4HotCam2000/

 

have all the tools so its not a problem. but heres what I use,

 

http://www.jegs.com/cgi-bin/ncommerce3/ProductDisplay?prrfnbr=2884&prmenbr=361 (valve spring compressor)

 

http://www.compcams.com/catalog/340.html (height micrometers)

 

http://www.compcams.com/catalog/348.html (6" dial calipers)

 

http://www.etoolcart.com/product.asp?0=203&1=232&3=948 (dial indicator)

 

http://www.jegs.com/cgi-bin/ncommerce3/ProductDisplay?prrfnbr=3293&prmenbr=361 (degree wheel)

 

and on my personal engines I try for at least .100 valve to piston,valve guide to retainer and rocker to stud clearance and .080 max lift to valve spring bind clearances