Originally Posted by Jimbo1367
I am in the process of looking for BBC headers for my swap and I found a set of Patriot Exhaust 1 7/8" headers (H8024) and they havewhat they call SAP for port shape. AnglePlug? thanks in advance
It stands for same as port meaning that the exhaust port on the cylinder head will match very close to the flange on the header.
SAP - “Same As Port” - Flange closely matches port shape in cylinder head.
Round - For stock round ports or oversized tube applications
D-Port - Typically fl at fl oor and sides with radius on roof of port.
Oval - Two sides half round. Horizontal and vertical oval.
Square - Nearly equal height and width with varied corner radius.
Square Oval - Made popular by the 18° Chevy, has radiused roof and floor.