biggest #'s from rb25

[fliprayzin240sx]

It's not uncommon for folks to make 600-650whp on stock RB25 bottom ends but with solid pivot, springs, cams as far as head work. I think anything more than that pretty much kills the drivability of the car if you want a street car.

[Sforteen]

Originally Posted by fliprayzin240sx

It's not uncommon for folks to make 600-650whp on stock RB25 bottom ends but with solid pivot, springs, cams as far as head work. I think anything more than that pretty much kills the drivability of the car if you want a street car.

650whp on stock 25 bottom end IS uncommon, its been done.. but its not a common thing.. solid pivots? RB's don't use rocker arms.. Their stock hydro lifters are actually pretty good too, unlike the SR's valvetrain