Does anyone think it is the radiator besides me?

thanks all. The car doesn't have a shroud around the radiator. I haven't seen one on the darts. New fuel filter,fuel pump, new bottom hose. The engine has just recently been re-built and runs fine. I will pull the plugs and see what that tells me. The running hot at higher speeds is perplexing to say the least.

Thanks to all that answered.

Bill

A lean condition can still exist with a carb problem.

A brand new hose can suck flat at high speeds.

Ask yourself what parts are common to both engines - what did you just move to the replacement engine? Carb? Distributor? Balancer?

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