60Lb valve springs?

[Pthomas]

I am looking for some reasons why i should change to 60lb valve springs if i dont rev it past 3300rpm. better valve cooling? better compression?

i dont know, do you?

I dont use an exhaust brake !

 

[sewman]

Plan ahead!!! Sooner or later you'll want to rev over 3,300

& might even get a brake!!

Bob

 

[Joseph Donnelly]

OPn high mileage engines you often see evidence of valve bounce, hammered seats and valves. The heavier springs should help minimize this. Dampeners would help too.

 

[Strick-9]

I've got them, but can't tell you why. It takes (robs) more HP to turn a cam with 60lb springs versus stock springs.



I didn't gain a thing with the added springs. I'd take them out, but they are too much trouble.



I'd waste your money on something else if I had it to do over again.



-Chris

 

[SlyBones]

Even if it does take a little power, I would do it for the extra safety. When I am at 3300-3400 I like knowing that I am NOT that close to the edge.

 

[Doubleclutch]

For the same reason you put the 4k gov. valve springs vs the 3k.

 

[Pthomas]

i put the 4k springs in because it took longer to reach 3000 rpm with the 3k springs!! try it you'll see!!

 

[Doubleclutch]

Just one more thing to add to the long list of Gotta-have-its!

 

[LarryB]

60Lb springs may take more energy to push open but they give most of it back on the down side of the cam. A very small immeasurable amount may be lost in heat due to greater friction. I'd guess about the same as the drag from sticking your hand out the window at 62. 3mph at 62F. Just a guess!

 

[Deezul1]

If you are doing it for more RPM without valve float dont you have to do intake and exhaust versus exhaust only for better exhaust brake function? That seems the logical thing to do.

 

[SlyBones]

Yep, that is correct.