Valve Springs

[Bruceynz]

Hi Guys,

Ok I have a set of valve springs, I am not about to use them but want to know how to measure them. I measured the spring uncompressed at 49.7mm and put it in my vice and wound it up and it measured 32.5mm that's a difference of 17.2mm or for you Americans 0.68" But something tells me that's not the full storey.

Here is my cam I want to know if the springs will be ok with this cam

Purple Shaft Hydraulic Camshaft & Lifter Kit

• Chrysler 273, 318, 340, 360

• Advertised Duration: 268°/272°

• Centerline: 110°

• Lift: .450"/.455"

• RPM Range: 1500 to 5800

Thanks
Bruce

 

[Grandmas84]

Some people say you can get away with stock spirings. The problem is you may end up with valve float at higher rpms.
Use some Comp Cam #901 springs. Its cheap insurance.

 

[Bruceynz]

I have some valve springs here already that have a damper in them, was hoping they may work ok.

 

[Aspen500]

Without knowing the specs on the springs it's hard to say BUT, with that cam they should be just fine, especially with the damper.

 

[Bruceynz]

The springs came in a kit with an elgin cam, are Elgin springs ok?

Dodge Chrysler Plymouth 318 340 360 Ultimate Cam Kit - High Torque

 

[80mirada]

They are usually pretty good. If you know the cam kit number they published the specs on their website