L72 L78 LS6 Solid Lifter valve spring recommendation
 

Looking for updated advice/recommendations on what valve springs to use with a factory solid lifter big block cam.
I have an NOS GM 143 solid lifter cam that I will be installing in a 1970 L78 motor. I don't plan to go over 6000 RPM. It's a 4:10, 4-speed car.

I searched on here, but all the discussions were old, and most referenced the Crane Valve springs, who, unfortunately no longer exist.

Thank you for the help!

About 15 years ago i replaced the valve springs on my 66 L72 Corvette engine with GM part #12371061. Label said GM performance parts with the part #.

I would reach out to Rick(OneStopRestoration) here on the site. :3gears:

Thank you for that info. I searched the GM part number above but came up empty. It appears to have been discontinued 10+ years ago already. I didn't find any part number it was superseded by.

PM sent.

The individual spring part # is 3970627. Part # i posted was a package of 16 springs from the performance parts catalog. Maybe this individual part # can help.

OK, thank you!

I have 2 sets of the NOS # 3970627 Valve Springs
Purple and Green stripes
And think I also have the factory retainers
If interested give me a call.
6o8-751-0509
Joe