WebGM installed these engines on grocery getters, high-performance street machines, all-out race cars, trucks, boats, and also industrial applications. To accommodate all these … WebMar 1, 2008 · Edelbrock Heads The Edelbrock Performer RPM oval ports are an interesting mix within the collection of aftermarket aluminum oval-port heads. They offer the largest intake-port volume of 290 cc ...
Chevrolet Big Block Heads - Casting Numbers and Specifications
WebOct 23, 2010 · Never had my heads flown but was curious what a set of 990 heads are capable of on the intake and exh sides during a prostock type porting effort. iam still … WebBig-Block Chevy Cylinder Head Basics. by Tom Dufur. The big-block Chevy’s canted valve heads are largely responsible for the tremendous power capability of the Rat motor and its continued popularity. The original head design is often referred to as having a 26-degree valve angle, although this intake valve angle of inclination is only one of ... godspell it\\u0027s all for the best lyrics
Head Comparison - OEM 990
WebOct 16, 2011 · Very old technology, bigger was better. Now it's more scientific, 990s have large ports less velocity= lazy at low rpm. Unless you try back to back tests driving with a new design vs the 990s you'll be happy. The 990s have a 320 cc volume and the newer heads are way smaller 265,290, 305, 308, 315 etc. WebApr 2, 2024 · A look at the flow numbers for the 317 and 243 heads (see charts below) shows that the flow of the 243 marginally outpaces the 317, a sign we should expect more power from the 243. WebSep 6, 2011 · But if you plan on shifting it at 7000 plus than the 990 head is pretty good. The only reason that people say they are not worth using is that machine work is expensive and by the time you sink the money in 990 … godspell it\u0027s all for the best