valve springs and cams question?????

matsm21 · Jan 28, 2004

what will actually happen if I don't replace the valvesprings when swapping in new cams. its a daily driver (although with high miles, over 100 on the clock)
just wondering how important cause of the PITA factor in installing them while the heads are on the car.
thanks

GinoGT · Jan 28, 2004

I believe that the stock valve springs are okay if you go with a very mild cam, but Bill (mustang92) still opted to swap his springs for his cam swap (VT Stage 1 N/A) because of his 100,000+ miles. In any case, swapping the valve springs is good insurance.

The reason for better valve springs is that fact that the stock ones will fail with almost any type of aftermarket cams (again, with *maybe* the exception of the most mild grinds).

I would never want to experience a valve spring breaking.

matsm21 · Jan 28, 2004

thanks , looks like i'll be doin it cause im prolly goin w/ the VT stage 2

GinoGT · Jan 28, 2004

matsm21 said:
thanks , looks like i'll be doin it cause im prolly goin w/ the VT stage 2

Stage 2's DEFINATELY need springs, those things are pretty lumpy.

And they sound absolutely

Out of curiousity, do you need to pass a sniffer? I've heard that can be an issue with the more wild cams.

lopey4.6 · Jan 28, 2004

Have you done a head swap yet?

matsm21 · Jan 28, 2004

i do have to pass emissions, but the guy(sorry, forgot name) from VTengines said it'd be ok in NY.
no I haven't done the headswap yet but this was kind of a decision making factor, cause w/ the high mileage im gonna need a rebuild before I make any real power. so i was gonna put cams and the PI intake on in the time being.(im sure you guys all saw that thread on the pi intake over npi heads). the logic was that I could always take the cams out and reuse them in the rebuilt motor. I just don't want to drastically reduce the life of the engine , as its running very strong now, and I like it to be rebuilt on my terms. no suprises, you know

TJM01 · Jan 28, 2004

I would recommend changing the springs. Think about it this way, it would be one less thing to do when you do rebuild for power.

valve springs and cams question?????

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