Discussion Starter · #1 ·
I put a set of the new SCJ Heads on my 460, F350 4X4. I did retorque the heads @ 600 miles. I have noticed a small anti-freeze leak, drivers side when the truck has set for a day or two, on the cold days, under 30. After it is warm or on a warmer day like today 40+ it dosent leak at all. Seems to seep at the #5 cylinder area only. Enough to se a spot under the truck. The block was decked prior to assembly by the best machinest in the area, so I don't suspect that. I used Felpro head gaskets with compresson thickness of .051 I live in Minot North Dakota, the temps can be from 20 in the mornings & to 65 by afternoon. So is this typical of aluminum heads to leak when cold, or should I be looking into different head gaskets?