Valve spring shims ?

[ikle]

Where can one buy the correct valve spring shims for stock heads ? If it matters I am going to be either using Cottons 980's or Kirbans LT1 springs. Thanks, Kyle.

 

[1KWIKSIX]

I believe these are the correct ones….
http://www.summitracing.com/dom/parts/cca-4753/overview/

They are available thinner than 0.015" if need be…….If you do a google search on valve spring shims…you can find em down to 0.010"

 

[ikle]

I believe these are the correct ones….
http://www.summitracing.com/dom/parts/cca-4753/overview/

They are available thinner than 0.015" if need be…….If you do a google search on valve spring shims…you can find em down to 0.010"

Thanks for the info, just so I get this right the shims need to be 1.250 in. OD X 0.814 in. ID correct ? Thanks again, Kyle.

 

[1KWIKSIX]

Sounds like they're the right ones….I just measured a spare set of valve springs that I'm planning on installing this year….they are 1.229" OD x 0.875" ID.

Don't forget that if you use the original factory spring dampers that they will add an additional 0.040" & will increase spring rates by a few more pounds.

 

[ikle]

Sounds like they're the right ones….I just measured a spare set of valve springs that I'm planning on installing this year….they are 1.229" OD x 0.875" ID.

Don't forget that if you use the original factory spring dampers that they will add an additional 0.040" & will increase spring rates by a few more pounds.

Thanks for the help, Kyle

 

[GNONYX]

Sounds like they're the right ones….I just measured a spare set of valve springs that I'm planning on installing this year….they are 1.229" OD x 0.875" ID.

Don't forget that if you use the original factory spring dampers that they will add an additional 0.040" & will increase spring rates by a few more pounds.

I though if one replace the spring you don't need to use the original spring dampers, or am I missing something?

 

[J-B Racing]

If you know a local machine shop. They should sell you the thickness you need. But you need to measure first ofcourse..
Stock iron heads 1.700" closed.

 

[we4Mateo]

I though if one replace the spring you don't need to use the original spring dampers, or am I missing something?

I put them back in my heads when I did springs, but I went with 75lb springs since I stayed FT cam, so I figured I'd make sure they were all of 75lbs installed.