laxdude362

iTrader: (1)

For those of you who(sc300 5spds) have replaced their cams and pulleys with performance ones, what kind of gains did you see? Which ones did you buy? How much is installation( I heard somewhat expensive from a friend)?

RjRacing

I have an unorthodox underdrive pully and the car felt more responsive and I felt alittle more power when I added this, but I don't have any dyno number to prove this.

CP_Ree

iTrader: (1)

Honestly, you will not "feel" anything. If anything, it'll be psychological. Even if there are gains, I guarantee you won't really "feel" it unless it's 30+ whp.

laxdude362

iTrader: (1)

Any estimate for installation of cams and pulleys?

NAZTY97

I read somewhere, can't remember where that you can noitce a 3-5 hp gain,.... so that statement may not be totally true.

CP_Ree

iTrader: (1)

What I'm trying to say is if you went out and drove two cars that made a difference of 5-10 whp between the two, you would not be able to tell which one made more power. Maybe if they made only 10 whp to start with, maybe you might "feel" a difference but no vehicle makes only 10 whp. It takes quite a bit of power to actually be able to "feel" it. Driving a 170 whp Sc300 and a 180 whp sc300 is going to "feel" the same.

As for the cams, it'd depend on how aggressive they are and if the stock ones are just that crappy. For a stock car, personally, I wouldn't bother. Maybe once you make 600-700whp range where cams become a restriction, you could start looking for cams. Pulleys.... they'll just look pretty and won't do anything. The crank pulley might free up a tiny bit, but that's the only one that probably would.

TWISTED II

right. just like people who gain 2-5 hp from intake or exhaust. its the increased sound that makes them think there is a performance gain. and there might be, but you won't feel 5 hp.

a good test would be someone with nitrous. i doubt they make them, but if you throw on a 5 or 10 hp nitrous jet, and hit the button in like, third, and see if you feel anything with that 5 hp gain. i really doubt they make jets that pointless though. when i had nitrous on my last car, lowest i saw was i think 50. even with my 65, which prolly gave me an additional 45-50 hp at the wheels, it wasn't really all that crazy of a change.

got_trd

depends on what your mods are.... i've seen as much as 100rhwp gained from a set of camshafts

Bean

iTrader: (1)

well i think if he's going to be upgrading to the sort of cams that can make 50whp+ gains that he's going to need to worry a lot more about the valvetrain... because it isnt setup for the higher rpms and ramp speed that will be needed (not even discussing rev-limiter issues)

RjRacing

I have been modifing cars for years, and after driving them for alittle bet you get use to how much power it has, then when add even 5hp, you can feel it some cars (dpending on how much you had to begin with, I couldnt feel the diff 496WHP and 551WHP in the GN for some reason)
Now when I did the pully I also block my EGR valves, gutted my cat, and put a ground kti in, so yeah, I felt a difference afterwards.