Crower valvesprings

[ckellum2]

So I've been doing some research and I have found on 2gnt and 'tuners people referencing to the 4g63 valvesprings by crower fitting the 420a head. I was wondering if this was just a simple replacement or if there was any modifications to the 420a head to do this. Thanks for all the help. ~Chris~

 

[bullettdsm]

Define simple .

Just a straight up spring install. No modifications needed. I'm running the stock 4g63 springs in my turbo car and the Crower's 4g63 in my NA.

MB

 

[ckellum2]

Thanks. . I figured I would post up on here 2gnt and talk to get a quicker response. Thank you for responding.