Intake manifold off again...Crap

[DAVID GAGNARD]

Originally Posted by tortuga

Well FACK it blew again today: Its always from BIG throttle to off throttle: Solved the oil leak and now back off again (i am getting quick at it): My confidenc in this motor is quickly dwindling to zero...need to check the manifold and heads for flatness, and use the best gaskets i can i guess: Its a small block making a crap load of power...

One thing i am wondering about is tapping into the back coolant passages and plumbing them back to a return? Seems weird having a stagnant passage back there? i would suspect that the cause is likely a big sudden vacuum spike off throttle at high rpm...

Gonna do some research before bolting this ***** back together yet once again...

Exactly what blew this time???? a picture or two would be great.....
Do you have any or what kind of PCV system on the car and any valve cover breathers????

Something seriously out of wack,never heard of or seen one blow repeatedly without some major flaw in the system.

David