Keith Morganstein wrote: ↑Fri Oct 12, 2018 5:07 amJack do you have an SBI catalog? (Paper catalog is best). In the back are springs by OD. Then you can check the specs by the number. Happy hunting!PackardV8 wrote: ↑Wed Oct 10, 2018 2:06 pmBuilding Packard V8s. We're needing an affordable spring and retainer package. The OEM springs are NLA. I've modified early Cad OHV8 springs and retainers, which are now also NLA. So we need 1.550" OD springs and retainers for .375" stem valves; 100# seat pressure @ 1.75" is fine.
Most of the 1.550" OD springs in the catalogs are part of race-heavy dual spring packages. Any idea which other engines might come with 1.550" OD springs as OEM? Who offers low seat pressure aftermarket single springs and retainer packages?
All ideas and leads appreciated.
General engine tech -- Drag Racing to Circle Track
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Automotive Machining, cylinder head rebuilding, engine building. Can't seem to quit
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Stock replacement springs for a 66-70 Ford 390 GT. Cheap and plentiful. .500 max lift.