World Products S/R Street Replacement Heads
The S/R is a street replacement cylinder head offered with either a 1.94″ or 2.02″ intake valve. The 1.94″ version is called “S/R” and the 2.02” version “S/R Torquer”. Stock air flow leaves a little bit to be desired for a racing engine.
However, if you are interested in adding quite a bit more power to your engine, air flow can be significantly improved with our “S/R UnderCover Porting“.
A stock S/R head flows 195 cfm intake and 135 cfm exhaust. After our modifications the intake port will flow 225 to 235 cfm while the exhaust will flow around 160 cfm resulting in a major horsepower improvement.
As with all of our cylinder heads, we can perform “Undercover Porting” or any other procedure to your S/R heads.
Cylinder Head Design Form: Fill out our online form for a recommendation and pricing on a set of heads built specifically for your application. Also, here is a link to more detailed information on our Complete Cylinder Head Assemblies. Cylinder Head FAQs
Sending your cylinder heads to us for modifications? Check out our head shipping tips.