Olds 307 5a Heads Max Lift Help

[442Jayp]

does anyone kno what the max lit is on these 5a heads

 

[High Roller]

as long as you have the right springs, it only depends on the compression if the valves are gonna hit the pistons. no different than any head

 

[bigdan]

X2 if you get the right springs for it ....same rules apply as all others