Long tube headers vs Block Hugger (short) Headers 273 Small Block

nm9stheham said
Only if you were working at high RPM's and got some benefit from the shorter tubes resonating at the higher RPM's.

OP, what IS your application, as in, how are you planning to use your car/engine? Circle track racing (high RPM's)? Street use only (low RPM's)?

its going into a 67 barracuda 273 500cfm eddy lb4d intake 3.55. mostly street driving/daily driving i currently have stock manifolds on the 273