Quote:
Originally Posted by streetfytr68
My money's on the steam hole issue. You need proper 400 head gaskets as well as a pair of 1/8" holes drilled between each chamber of the cylinder heads as shown in the pic below. If there is any doubt whatsoever, pull a head and check. Depending on what block/heads you are using, there is also a slim chance that casting flash has become dislodged and is blocking a water passage.
Other than that, (not sure what you mean by "checked water pump") I would remove the fan belt and grab the water pump pulley. Check for any free play. March uses basic Auto Zone grade OE water pumps with stock impellers and sloppy tolerances. Might as well get a true HP blueprinted pump like EMP/Stewart, Edelbrock, Moroso, etc. Cheap insurance.
Be glad I'm not there to help. My usual response to basic joe-mechanic issues is to take the entire vehicle apart and drop $50K on upgrades.  |
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Steve:
Thanks for the reply. I'm using the Bowtie 400 Block, and the head are Brodex Track 1 Heads. This is the same engine Mark was using when I bought his car. The water pump when the march pulley system was going on didn't have a lot of slope in it. The overheating has slowly started to get better, but I'm not sure if it is the season, or the fact I have changed so many things.
Ty