Crane Cams 1.275" Dual Valve Springs, Good to .650" Lift. Have 3000 miles on them. PN# 40-144832-16. Here is some info found in the Cam sticky from the internal section.
A dual spring setup rated for up to .650 lift. When buying duals you’ll need the dual springs (obviously), titanium retainers, new dual spring seats, and new valve stem seals.

Outer Diameter Outer Spring 1.275
Outer Diameter Inner Spring .937
Inner Diameter Inner Spring .667
Damper No
Seat Pressure @ Installed Height 112 lbs @ 1.800
Open Pressure and Height 352 @ 1.150
Coil Bind 1.045
Maximum Net Lift w/.060" Clearance .650
Average Spring Rate (lbs./in.) 352
Just the springs. $95 shipped. Paypal addy is Sweetss@cfl.rr.com

 

PM'd you !!

Also... do you have the retainers and keepers ?

 

Replied.

 

Bump, still for sale.

 

do the heads have to be machined for them to work

 

Don't think so. You will need new seats to go with the springs though.

 

Bump, these need a good home.

 

Bump, still for sale...

 

Up, for a good home...

 

do you have the reatainers?

 

Just the springs.

 

$90 shipped...

 

man....if only these had everything else with them....id be all over it....
o well
bump for ya

 

You've got a PM.

 

Sold!