Correct valve spring size for vortec heads?

[Guest TreeCutter260z]

i have vortec heads on my car but i rebuilt the motor using a 91 corvette lower end. the cam in a roller cam from crane cams with 222/230 duration and 509/528 lift. I was told that the stock valve springs cannot handle this much lift. that i would need to have them machined the accept the larger valve springs. i heard something like 1.375? They currently measures out at 1.250. any web site with info on this or anyone know about this. I tried searching but couldn't pinpoint this topic.

 

thanks

matt

[Tim240z]

Give Marty Morris in the parts dept. @ Scoggin Dickey Chevrolet a call. He'll help you out. When I ordered my heads from him (Vortec), I got the one's with the upgraded springs pre-installed.

 

http://www.sdpc2000.com/

Tim

[Guest jwelch]

Matt,

 

Read through this thread. It has some good info.

 

http://www.hybridz.org/phpBB2/viewtopic.php?t=1880&highlight=

 

Best Regards,