Comp Cams 901 springs

I used those springs with a 268H and they worked great. I'm going to use them with a .486" lift cam and I talked to a COMP tech guy and he said that they would work fine. Just make sure the springs are good for what cam you want to run. If you go with COMP just call them and talk to 'em if you have any doubts. I think max lift for them is a little under .500" i think but you've got to think about stuff like rocker arm ratio and loss of lift due to valvetrain geometry. If you've got a cam with .500" of lift you'll probably lose about .020" because the lifters and pushrods are at different angles. So you'd be at .480" with a 1.5 rocker.