Can you drill steam holes in trick flow heads?
For example, it appears that Trick Flow will not warranty a head if the steam holes are drilled. Having stated that, the general consensus is to use the proper 400 style head gaskets with steam holes and use them as a pattern to place the holes in the correct position.
Why are the holes on a head gasket different?
Head gaskets, with their precisely shaped-and-sized holes to meter the flow of coolant through the engine, also help prevent overheating. When replacing the head gasket with a Fel-Pro head gasket, you may notice that the coolant holes have a different size or position compared to the engine block and cylinder head. Is this normal?
What should I do before installing a gasket on my head?
Before installing, inspect all of the bolt threads. And replace deformed and worn threads. Even if all of your head bolts are brand spanking new, it won’t matter if the bolt holes are deformed or dirty. In most cases, you need to run a bottoming tap down each of the holes.
Why are there holes in Fel-Pro head gaskets?
This will depend on the generation, application and the intended use of the block. These are not design flaws or oversights – the size and placement of every hole in the gasket is intentional, and this is true for every Fel-Pro gasket. The holes in head gaskets meter the flow of coolant properly through the heads.
Head gaskets, with their precisely shaped-and-sized holes to meter the flow of coolant through the engine, also help prevent overheating. When replacing the head gasket with a Fel-Pro head gasket, you may notice that the coolant holes have a different size or position compared to the engine block and cylinder head. Is this normal?
What kind of drill bit do I need to drill a gasket?
Use a 400 head gasket as a template to mark the heads and Drill the 3 holes on the intake side using a 3/16 drill bit at a 10 degree angle towards the exhaust side of the head. Drill the 3 remaining holes using a 1/4 inch drill bit straight down towards the top of the head. 1.)
How many holes do you drill in a 400 block?
To use the Small Block Chevy 350 head on a 400 block, it will be necessary to drill six holes in the cylinder heads. Use a 400 head gasket as a template to mark the heads and Drill the 3 holes on the intake side using a 3/16 drill bit at a 10 degree angle towards the exhaust side of the head.
Where are the coolant holes on a block casting gasket?
The coolant holes in the block casting are much larger than those in the Fel-Pro head gasket; this is by design. Besides the reduction in size of the top coolant holes, the large coolant hole on the bottom right of the superimposed gasket above is partially blocked off.