Thread: intake manifold vacum leak

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Hi all Im looking for advice or if any body elase has had this problem My 350 has stock rebuild short block with world products sportsman 2 heads and edelbrock rpm intake when I took the engine apart the intake gaskets on the bottom were wet with oil and the intake valves and alot of burnt gunk tar on the on the back side of the intake valves. Like the intake was leaking from the bottom side of the port sucking in oil from the lifter valley bottom of the port. the top half of the gasket is stays stuck to the flanges and dosnt look like its leaking just the bottom part. I sprayed the intake on the top and tryed to listen for leaks but its all good vacum stays steady at 8-12 depending on rpm. My main question is what can cause this lower port leak Im thinking it could be the intake manifold and head flange are different angles or the block is warped deck not square or ? next time I take it apart im gonna measure the angles. both companies have really been helpfull edelbrock keeps asking if im using the right gaskets which I am but dont see how the wrong gasket would make a weird problem like this im guessing ill se a mill man soon thansk for any tips or advice henrik

The car still runs good but fouls the plugs easy if idles to long it still has good performance im guessing cause its sucking in air from crankcase insted of outside the engine

which peice do you think is off the edelbrock perf rpm intake world products sportsman 2 heads and a stock 350 block the problem started after i put the heads onany body know which to check and what the proper angles should be or how or where to get info it seems like weird problem cold it be i have to use a worlds products intake with the heads or could the block deck be that bad, its a rare weird problem but the oil is being sucked in the intake and baking into tar on the back of the intake valves could crankcase pressure be to high and busting through or would that just go out the valve cover

read this.....

http://streetmachinesoftablerock.com...hp?p=1402#1402

thanks tech good info also good engine combo pages