i need the ID mesurement on the header flange on the hooker long tubes. is it also 1/3/4. i no the the primaries are 1/3/4 inches.

is it D shaped like the head or just round or what

 

Sorry what are you trying measure?

Can you explain ID measurement on the header flange? I can do it for you tonight possibly.

 

inside diameter of the header flange and the shape of the entry to the header flange. how wide and tall is the entry port to the primaries.

 

With the welds buldging into the pipes, my 1.75" Hooker LTs were about 1.7" and d-shaped on the inside if I remember correctly. Not 100% positive on the D-shape.

 

1.7"s so its not big enough from the top to bottom to help stop reversion huh. ive got to go home and measure the exhaust port from top to bottom. and see if it is as big or smaller than the opening at the flange. im trying to see if the header will help prevent reversion.