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408 rebuild what could be wrong?

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Old Jun 19, 2021 | 04:36 PM
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Originally Posted by bbond105
I would do a leak down test with all of the rocker arms off, and listen to where the air is escaping from. Should not hear any air going by the valves.
only thing left it could possibly be would be the rings. So this is going on the back burner if I don't decide to part it out
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Old Jun 19, 2021 | 05:23 PM
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Where is the cam degreed at? Did you do a leakage test with the rocker arms still installed, and with the valves closed?
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Old Jun 19, 2021 | 06:28 PM
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Originally Posted by WE TODD DID
Where is the cam degreed at? Did you do a leakage test with the rocker arms still installed, and with the valves closed?
I'll do another leak down, last leak down I did revealed the valves were leaking. Haven't done another since I got the heads back. It's either going to be head gasket or rings
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Old Jun 19, 2021 | 08:23 PM
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Ok preformed a leak down on a few cylinders leak down was all within range, except 3 out of 4 of the cylinders I did I could fill air coming out of the filler cap. So I'm assuming my rings are no good
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Old Jun 19, 2021 | 09:22 PM
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Where is the cam ICL installed at?
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Old Jun 26, 2021 | 07:35 PM
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Ok so up. I figured out what was wrong. So when I reinstalled the heads there was no dial pins in to center the heads and I'm assuming the gaskets were moving around. The only reason it semi started last time I had head studs in the block I switched to arp head bolts.so I'm assuming things were no aligned correctly.
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