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Old Jun 6, 2009 | 11:04 PM
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Blown Head Gaskets

Alright so on my 423 stroker, when I ran it, after about 10min it blew both head gaskets in the same spot on the gaskets, so if you laid them on top of each other, the 2nd cylinder spot was blown on each gasket. Could this be a faulty pair of gaskets since they both blew in the same spot? Otherwise we already bought another set of heads that were going to put on it and hope it doesn't do it again.
 
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Old Jun 7, 2009 | 01:16 AM
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Surface your heads and block and use a good head gasket like Felpro 1020 gaskets. When tightening head bolts, use the proper sequence. You should not have a problem then.
 
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Old Jun 7, 2009 | 01:27 AM
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These current heads that just blew the gaskets, are they the same heads you ground on and which were whacked by the pistons here a while back?

As I said, every part of that engine is suspect after an episode like that.
 
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Old Jun 7, 2009 | 04:08 PM
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Originally Posted by 85e150six4mtod
These current heads that just blew the gaskets, are they the same heads you ground on and which were whacked by the pistons here a while back?

As I said, every part of that engine is suspect after an episode like that.
haha i didn't think anyone would remember but yes they were the same heads, and we were upset with those in the first place because the guy we bought them from said they were 390gt heads but all he did was drill in a few more holes for 14bolt heads for the exhaust, but the new heads are actual 390gt heads as the intake ports are 1/4in taller than the other ones, were putting them on today and i'm hopin we won't have trouble
 
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Old Jun 7, 2009 | 10:49 PM
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When you replaced the pistons, you double checked the rods and bearings and block, right?
 
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Old Jun 8, 2009 | 01:57 AM
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Originally Posted by 85e150six4mtod
When you replaced the pistons, you double checked the rods and bearings and block, right?
Well the block had to be replaced and we bored that .60 over, the connecting rods were fine also, weren't bent and had no play in them, i guess its a good thing we bought heavy duty high performance eagle rods
 
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