If you are running headers or making above average H.P. and live in a area that is warm a return line is real nice to have. I had vapor lock issues on hot days in the past running a mechanical pump with no return. No problems whatsoever now with an electric pump and a retun line. Fuel just circulates to keep cool.
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67 Firebird Best time 1.53 60' [email protected] 1/4 [email protected] 1/8 3500lb. leaf springs
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