Spring Strength vs. RPM
01-31-2007, 07:10 PM
#1
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Spring Strength vs. RPM Got a question for all the LS techs, this is my first pushrod car.
I am looking into getting an MS4 for my Z06 that is my DD (10-15 miles per day MAX).
My question is, how does this cam affect spring strength when I'm really driving everywhere under 3K and barely WOT at all except for a blast on the highway here or there.
I know they are building the double springs, but I am not into changing them out at 10-15K miles.
So basically, does low RPM driving dramatically reduce spring life if the cam has alot of lift?
Thnx all, Zach
I am looking into getting an MS4 for my Z06 that is my DD (10-15 miles per day MAX).
My question is, how does this cam affect spring strength when I'm really driving everywhere under 3K and barely WOT at all except for a blast on the highway here or there.
I know they are building the double springs, but I am not into changing them out at 10-15K miles.
So basically, does low RPM driving dramatically reduce spring life if the cam has alot of lift?
Thnx all, Zach
02-01-2007, 07:31 AM
#3
Ya if your going with a high lift cam a stiff spring is a MUST. No matter what RPM's you stay around it doesn't matter, the cam is still making the same lift at all times, so the springs need to be able to hold up.
Speed Costs Money How Fast Do You Want To Go.
Speed Costs Money How Fast Do You Want To Go.
02-01-2007, 09:02 AM
#4
Originally Posted by Zee916
Got a question for all the LS techs, this is my first pushrod car.
I am looking into getting an MS4 for my Z06 that is my DD (10-15 miles per day MAX).
My question is, how does this cam affect spring strength when I'm really driving everywhere under 3K and barely WOT at all except for a blast on the highway here or there.
I know they are building the double springs, but I am not into changing them out at 10-15K miles.
So basically, does low RPM driving dramatically reduce spring life if the cam has alot of lift?
Thnx all, Zach
I am looking into getting an MS4 for my Z06 that is my DD (10-15 miles per day MAX).
My question is, how does this cam affect spring strength when I'm really driving everywhere under 3K and barely WOT at all except for a blast on the highway here or there.
I know they are building the double springs, but I am not into changing them out at 10-15K miles.
So basically, does low RPM driving dramatically reduce spring life if the cam has alot of lift?
Thnx all, Zach
It really likes the upper rpms. Maybe you would enjoy a smaller cam.
02-01-2007, 09:34 AM
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Originally Posted by Stang's Bane
Judging by your intended usage, maybe the MS4 is not the best cam for you.
It really likes the upper rpms. Maybe you would enjoy a smaller cam.
It really likes the upper rpms. Maybe you would enjoy a smaller cam.
I should have just asked if lift is lift no matter what RPM the engine is at, which makes sense.
Thanks for the comments guys.
02-01-2007, 11:23 AM
#6
Ignoring heat and potential other spring dynamics at high RPM, the fatigue life is a function of stress and cycles. The stress will be determined by the lift for any given spring and the number of cycles is just how many times its gone up and down.
02-01-2007, 12:35 PM
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Originally Posted by vettenuts
Ignoring heat and potential other spring dynamics at high RPM, the fatigue life is a function of stress and cycles. The stress will be determined by the lift for any given spring and the number of cycles is just how many times its gone up and down.
