RaceNewYork

RaceNewYork Discussion => The Tech Barn => Topic started by: imca77 on May 02, 2018, 06:37:49 PM

Title: PAC valve springs
Post by: imca77 on May 02, 2018, 06:37:49 PM

can someone explain if I have a set of PAC valve spring on a motor,how are they able to check springs at tech and determine that they are in fact PAC springs,and not factory GM crate springs ? any tech guys out there that can explain this to me ? thanks.

Title: Re: PAC valve springs
Post by: m15mod on May 05, 2018, 10:27:43 AM

I haven't seen any to tell you 100% but here are a couple of things. Wire diameter, free length, surface finish, seat and open pressure.

Title: Re: PAC valve springs
Post by: sidebite on May 15, 2018, 06:19:37 PM

I hear they can tell right away because the color and texture is different than GM springs. Just buy the rated GM sets and change them often.