Gt40p heads with stock springs

[f8tlfiveo]

I put a set of reman gt40p heads on my car about a year and a half ago. I did not change the springs when I put them on. I just bought a set of crane beehive springs to replace the stock springs. Do you think I left any hp on the table by using the factory springs? My last dyno was 260 hp 300tq at the wheels.

 

[NIKwoaC]

It is possible. You'll now have a more stable valvetrain which could mean more RPM, and RPM=power. What RPM were you seeing with the stock springs? I'm assuming stock cam?

 

[f8tlfiveo]

Stock cam.. 1.7 rockers.. Prob about 5200 or so... High rpm seems to lose a good amount of power