Which valve springs

[84TXGN]

I'm going to run a flat tappet cam with about .470-.480 lift. How heavy should my valve springs be?

 

[87GN_70GS]

The cam supplier should have a recommendation for springs.

 

[TURBOTWIN2]

100 lbs.?

 

[wickedtt]

Comp. 980's

 

[onebadsix]

I agree with the comp 980,s theve worked fine for me

 

[JP112_89]

.

I used the comp 980's too. I heard K-Motion work well.