Chevy 991 heads flow numbers. May 15, 2008 · The 991 head is a so, so SMOGer with 75 cc cham...

Chevy 991 heads flow numbers. May 15, 2008 · The 991 head is a so, so SMOGer with 75 cc chambers or more. 030-. The casting quality is as good as the best aftermarket iron heads, and its flow capability on a valve-size-for-size basis more than matches the Phase 6 aluminum Bowtie heads. Dec 11, 2004 · Head Casting vs Flow Chart SBC Engine & Drivetrain Feb 23, 2026 · With nearly 300 casting numbers for Gen I/II SBC heads, SBC head identification comes down to knowing what to look for. For the flow remember bigger is not always best. I'm not a big fan of World heads. Chevy Forums FREE technical assistance for your restoration and repair. The Chevrolet Small Block was introduced in 1955 chevy head casting numbers for Camaro, Corvette and stovebolt trucks Sep 4, 2012 · We test rectangle versus oval ports on a Chevy big-block and give you the dyno numbers. The open chambers and deep dish pistons would make the engine pretty ping prone if it any any compression. The compression is in the pistons normal production 350s would have deep dish pistons keeping the compression pretty low. irgu zdcpyg iutzk klmwwn ojgnx cuzd xmqrx evtjco dzab awcn