Valve spring choice

I think it may be time to replace the valve springs.
I have Manley 221424 springs installed. They check out at 250 to 265 lbs @ 2.00"
The car is driven perhaps 100 miles a year - street driven with occasional blasts to 6600 rpm.
Springs are 10 years old - but still check out as far as seat pressure goes.

3 choices:

Manley 221424 (leaning to this again)
PSI-1224
PAC-1224

Solid roller cam (276/290 .454/.450 lobe), stainless Ferrea valves.

Cheers

If those Manley "blue stripe" springs have not broken an inner spring and still check good for pressure I'd give them another year.

Lem Evans wrote:If those Manley "blue stripe" springs have not broken an inner spring and still check good for pressure I'd give them another year.

^^Yep

Dang......apparently I have been changing mine way sooner. But I am bracket racing which I guess is different than what he is doing I guess.

When valve springs "break" it is 99% of the time during the initial run. After that, they simply deteriorate; sometimes quickly but, most of the time it happens slowly.
So, if you have a good spring which has not yet deteriorated past "runable", I would use what has been tested.

rmcomprandy wrote:When valve springs "break" it is 99% of the time during the initial run.  After that, they simply deteriorate; sometimes quickly but, most of the time it happens slowly.
So, if you have a good spring which has not yet deteriorated past "runable", I would use what has been tested.

That's what I've observed with those 'blue stripe' springs.....if an inner spring breaks it'll happen in the first 20 or so passes.

Thank you all !

68galaxie wrote:I think it may be time to replace the valve springs.
I have Manley 221424 springs installed. They check out at 250 to 265 lbs @ 2.00"
The car is driven perhaps 100 miles a year - street driven with occasional blasts to 6600 rpm.
Springs are 10 years old - but still check out as far as seat pressure goes.

3 choices:

Manley 221424 (leaning to this again)
PSI-1224
PAC-1224

Solid roller cam (276/290 .454/.450 lobe), stainless Ferrea valves.

Cheers

I am also looking for valve springs / here the corresponding thread

https://www.429-460.com/t24043-boosted-460-timing#317659

Could somebody be so kind and post a reply? Thank you so much!

Any comments here? I am sort of stuck without knowledge.