500hp Valve Spring/Crane PN?
#2
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I don't recall the Crane springs being recommended very often. I believe many were using the Comp Cams Valve springs 249-929-16. We have many more choices now that should last longer.
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Join Date: Sep 2009
Location: Marblehead & Mansfield, Ohio
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Just the info I was looking for, Isky 8005 performance springs. Can someone list the recommended PN of the retainers and locks or do you use the original items over which I doubt. Thanks
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Answer from Bob @ RMBuilder
Assuming that you will be using the stock OEM HP500 cylinder heads? If that's the case you have 3/8 valves. My preference on the Springs is always the Isky over the Comp. Your best choice here would be the 8005+ endurance spring. If using a 7° retainer the part number is 175 – ST and the keepers are VL-800.
#9
OK, I am looking at the catalog for Isky springs on FlatLanderRacing's site, and they list a PN 8005-A, 1.530 diameter, dual spring, 135 lb seat pressure, 395 lb open pressure, up to .650 lift. Is this the right spring? I did not see a plain "8005" PN listed.
My cam comes in with a little lower lift than the stock HP500 cam, so the .650 max lift should be fine for me.
Thanks.
My cam comes in with a little lower lift than the stock HP500 cam, so the .650 max lift should be fine for me.
Thanks.