I have a 91 NX2000. Im looking to get a header and cams. Which cams can I drop in w/o changing any cyl head internals? I understand the S1 is a drop in. what about the S3 and S4? Do i have to change springs?

get s4's, you will love them and they will work perfectly on your motor, no extra parts needed. S series cams are designed to work on motors with stock internals. i'm not totally sure but i think s1 cams are made for the ga16de.

all s series cams are drop in. Dont ask yourself s3 or s4, ask yourself s4 or s5?

s4's are really good imo..ive drivwen in a jdm with s4's and a t28..wow at 3k or so the opunch is hard all the way to redline..maybe its the 12psi in a 2100lb car.but hey..kill whats good man

So this cams or straight drop in and you don't have to change the springs? Cool I might look into the s4's. How much better are the s5's? Don't know much about them.

i dont think jwt is making s5s anymore, but i could be wrong

So this cams or straight drop in and you don't have to change the springs? Cool I might look into the s4's. How much better are the s5's? Don't know much about them.

s4's are a straight drop in. they are designed so you do not have to change the springs. i wouldnt get s5's because people have had problems running them without upgrading their springs.

HP wise?

s3's make more low down but the s4's make more high up

^^ true with the above statement.

please move to the newb section. :)

please move to the newb section. :)
:rofl:

http://www.sr20forum.com/showthread.php?t=145963

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