Valve Spring Keepers

JayBayBay · Post #1 by **JayBayBay** » Sun Nov 20, 2016 1:23 pm

Hey everyone, putting together my head after milling and some port work and ran into trouble with a keeper. Surprised I didn't notice it earlier but one and only one of my valve keepers is incorrect.

One on the left is the odd ball

Anyone know the manufacturer/part number that was used for the aluminum heads or the specs so i can order up a new one? I know they're 5/16" stem but not sure on the degree. Thank you!

CNC-Dude · Post #2 by **CNC-Dude** » Tue Nov 22, 2016 12:17 pm

They look like the average run of the mill stock replacement 7°lock used in any Chevy, Ford or Chrysler 11/32" valve stem. They are nothing special or custom. The oddball one if used in a matching set changes the installed height approx .050".

RichCreations · Post #3 by **RichCreations** » Thu Nov 24, 2016 5:36 pm

CNC-Dude wrote:They look like the average run of the mill stock replacement 7°lock used in any Chevy, Ford or Chrysler 11/32" valve stem. They are nothing special or custom. The oddball one if used in a matching set changes the installed height approx .050".

except they are 5/16, not 11/32... but they are 7 degree

CNC-Dude · Post #4 by **CNC-Dude** » Thu Nov 24, 2016 6:12 pm

I saw he said 5/16" even when I was typing in 11/32" and it still didn't click.

drag-200stang · Post #5 by **drag-200stang** » Fri Nov 25, 2016 12:21 am

I think you are both right, I see both sizes.

RichCreations · Post #6 by **RichCreations** » Sun Nov 27, 2016 11:54 pm

drag-200stang wrote:I think you are both right, I see both sizes.

well, they are supposed to be 5/16...

JayBayBay · Post #7 by **JayBayBay** » Sat Dec 03, 2016 2:36 pm

Thanks guys!

Post #8 by **wsa111** » Sat Dec 10, 2016 10:06 pm

Many camshaft mfgs. have 3 styles of keepers to allow different installed height for the retainers.
-.030-0-+.030.
Comp cams uses keepers for a 5/16 valve stems so you can use retainers designed for 11/32 or 3/8 valve stems.
The way to go is use valves .090" longer than stock so you have a better selection of valve springs for solid lifter cams which are aggressive & require 130# seat pressure & over 300# open pressure.
If you get an aggressive solid lifter camshaft with high spring pressures i would get the camshaft nitrided
hardened to prevent wear. Also need a hardened distributor gear.

JayBayBay · Post #9 by **JayBayBay** » Tue Dec 13, 2016 4:45 pm

So it turns out the keepers are actually 10 degrees on the ones I got with the head (I learned the hard way).

drag-200stang · Post **#10** by **drag-200stang** » Tue Dec 13, 2016 5:01 pm

So are the retainers 10 or 7 degree ?

Valve Spring Keepers

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