I have a set of gt40 heads I just picked up along with cobra 1.7 roller rockers. I've read to upgrade the valve springs when running aftermarket cams, but my plan is to run a stock cam. This is a street car, and with the stock cam i probably won't be up over 5500 RPM. Should i really go ahead and drop the 150 beans on some Trick Flow springs?
Want to hear your opinions
Want to hear your opinions