Does anyone know of any decent 'dual' valve springs that have a seat pressure of 130-140lbs at 1.8" and <400lbs open at 1.2?

Starting to freak out a little as in our haste to rebuild the motor my engine builder took out the inner spring of my TEA duals to reduce spring rates/pressure.

I know TFS has the TFS-16306 that's 150 seated, 438 open. Looking to see if anyone knows of any duals that are a little less sprung.

I'm running a mild LS9 cam and 1.7 rockers, hyd lifters. I've had assurances that with my cam those springs should hold up just fine but as always searching for some cheap insurance as I plan to track the car often this year.

 

That seems like a huge jump in seat pressure from the stock ls6 springs. I would think you want to stay as close to ls9 stock spring seat pressure as possible. I can't imagine its over 115#.

 

Yep, that's why I'm after duals at around 115-120. Do they exist?

 

Yes, it's actually what I'm running now. http://crane.carshopinc.com/product_...6137/144832-16 112lbs seat pressure, 352lbs open pressure.

 

Excellent find. Thanks. OD looks ever so slightly smaller than my current spring (1.3") but hopefully shouldn't be a problem.

Actually I'm wondering if this will fit with my current ti trickflow retainers.... ermmm...