1996 7.4 Piston Rings????
#1
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1996 7.4 Piston Rings????
I am rebuilding a 1996 7.4 non-mag 454. I am still standard bore and have tried Sealed Power SLP-9905 rings. The oil rings will not work. They will not compress far enough to make it into the bore. Ther must be a special ring required for this piston. GM wants $46.00 per hole for factory rings and they can't tell me if they're the right ones. Has anyone else experienced this and have the Sealed Power part number. I am using stock pistons.
#3
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I guess the first thing to do is find out if your stock pistons require Mercruisers METRIC rings???? Some stock 454's do have metric rings. Nothing else will work.... if not, use a ring grinder as mentioned.
#7
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Location: Richmond, VA
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I have a partial set that I used when I rebuilt a 454 Magnum years ago. I screwed up one of the oil rings so had to buy a second set. Here's the specs from the box. I'm trying to sell these if you're interested.
(1) Set of Speed-pro piston rings - missing one set of oil rings
4.25 x .078 (8) Top rings
4.25 x .078 (8) Middle rings
4.25 x .1875 (7) Oil rings
(1) Set of Speed-pro piston rings - missing one set of oil rings
4.25 x .078 (8) Top rings
4.25 x .078 (8) Middle rings
4.25 x .1875 (7) Oil rings
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Steve Gresham
'03 Donzi 33ZX
Steve Gresham
'03 Donzi 33ZX