Question about Dodge Dakota

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Hello my problem is this. I have a 69 440 40degree over bore forged flat top pistons. Heads are Int 2.08" Exh 1.75 3-angle cut. Cam 509" 292 duration. Every time I do a burn out oil leaks from the front of my oil pan. I just installed a new windage tray and new gaskets and still I have this problem. I have run this motor since 1997 and have always used the same evacuation system. The problem showed up around 2005 and continues to this day. I used to run 11:90's @ 114mph now 12:90's @ 107mph. Head gaskets are new as well. Motor does not smoke or burn oil or foul plugs. Can you help me find an answer to this problem?

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MORE THAN LIKELY BROKEN RING ON A PISTON

Posted on Aug 14, 2008

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Cam specs on a 1967 Pontiac 400, 335 hp


Firebird App. Pontiac Part # Duration @ .050 Degrees Int/Exh Adv Duration Degrees Int/Exh Lobe Center Degrees Int/Exh Lobe Separation Angle Overlap Cam Lift Int/Exh Gross Lift Int/Exh
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If you just put on a set of used heads.

There's also the chance that the new headgaskets didn't seal completely, (usually due to a problem with surface prep or a warped head/block), but if you've got high mileage, it's usually the rings.

A set of rings can be replaced, but you'll want to make sure they haven't cut into the bore so much as to cause blow-by once new rings are installed. Eliminating the ridge by carefully using a ridge reamer at the top of the cylinder to prevent breakage of the top ring from impact.
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Link to a factory manual here:
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