Chrysler 2.4 Valve Springs For Use In 420a?

[BLACK'98DSM]

I'm wondering what the stiffness difference is between the 2.4 valve springs and 420a valve springs, and also if they're similar in diameter & height? I know the best way to figure this out is to remove both and do a comparison, which I'm willing to do. Just thought that possibly someone has already looked into to this and can save me a little time or money. Here's some pictures of a 1996 Stratus 2.4 that I was pulling from at the yard today. To me, the cylinder head looks almost identical to the 420a ("reverse flow" of course). If this is a bust I'll just buy the BC springs I was planning for anyway.

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[VelocitàPaola]

I believe they're the same part for both the 420A DSM and 2.4L PT Cruiser: 04777555AB.

 

[BLACK'98DSM]

Which means this is a bust.

 

[97egl]

I believe they're the same part for both the 420A DSM and 2.4L PT Cruiser: 04777555AB.

2x on this. But its not a 100% total bust. If you're ever needing to grab a few stock replacements from the junkyard it's way easier to find PT's and the cams are a lower lift so less wear than a 2.0. And they are newer to boot.

But with Crower springs selling for 75 bucks a set I'd probably just go with those. Lol

 

[VelocitàPaola]

2x on this. But its not a 100% total bust. If you're ever needing to grab a few stock replacements from the junkyard it's way easier to find PT's and the cams are a lower lift so less wear than a 2.0. And they are newer to boot.

But with Crower springs selling for 75 bucks a set I'd probably just go with those. Lol

Those are great points.