360 Bore

You can get by with a half fill on the street bacause most of the heat generated in combustion is in the head so it will still receive plenty of cooling. But as Moper stated it would be best to add an oil cooler because the lower half of the cylinders will not have any coolant to help maintain oil temps. Also as Moper stated it isn't just a matter of pouring it in and letting it harden. I have my 340 half filled and the block has to be leveled so one deck is completely level. Have a cylinder head and head gasket ready then pour in the block filler. I tapped on the block in various places with a hammer to release any trapped air then bolted on and torque down the head. Then do not disturb the block for 24 hrs. Then repeat on the other side. The main reason I used the stuff is my motor is .060 and right at 14:1 so I believe it was necessary. If my motor was only 10 or 11:1 or less I wouldn't have done it. If you don't get it right you will make the block junk and it is in there for life. You can't get it out.


Chuck