I have a SB400 in an '85 Chevy that runs at 210 degrees most of the time, even cruising down the highway after dark with the heater on full. When I put the motor in, it had a new starter, which stopped working after 2 weeks. It would start fine when cold, but as soon as it got hot, it would draw too much power, and act like a dead/low battery. I replaced the starter, and last night, this second starter did the same thing. As I was working on it an hour after it was run last, the starter was still too hot to hold for long. The factory exhaust manifolds have a built on heat shield, but it still got hot enough down by the solenoid this time that one wire melted. I have a good 4-core radiator in the truck, but I believe the 400 to be .030 or .040 over. Anyone know any tricks to get this thing to run cooler, or at least to keep from going through starters every other month?