1969 barracuda 383 formula s temperature/timing help

oldnew said

Carb is a brand new Edelbrock. It has 16 lb cap. It ran hot even with the old carb. The temperature gauge would easily go up to 3/4.

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Do you have access to a temp gun to get an accurate reading on temp? Does it heat up when cruising and normally stay cool at idle? Need to know how hot HOT is, stock guages and senders can be misleading.