WebDec 17, 2007 · heads. If you have a head porter that really understands port design i would ask for his recomendation. IMO the 2.19" intakes are a perfect match for the port design of the 049 heads. To use the bigger valves you really need to grind on the ports and there is water in there..L.O.L. Not worth the risk to destroy a head. WebMay 18, 2012 · The combination of more flow and less port volume makes these oval-port heads a much better choice for your street/strip motor than their rectangular-port counterparts. For motors up to and even ...
Complete Guide for Big Block Chevy Engine Cylinder Heads
WebOct 31, 2008 · Without touching the cam/bottom end, I would think adding a set of properly ported 049 heads(vs the peanut port heads), dual plane hi-rise intake, and a better … WebThe oval port head has 110-cc chambers, and the rectangular port head comes with 118-cc chambers. Cast-iron late-1960s “206” head with bathtub-shaped 98-cc closed combustion chambers. Cast-iron high-performance rectangular port “990” head with open 118-cc combustion chambers. Note the lazy-D shape of the chambers. can gum line grow back
BBC Cylinder Heads? (oval port) - Trifivechevys.com
WebSep 23, 2024 · mildly porting those heads in the bowl area under the valves and getting a good blended valve seat and pocket area and back cutting the valves with a 30 degree back cut to increase low rpm flow rates will be well worth the time and effort theres a very limited selection of matching intake manifolds available WebNov 19, 2010 · Hi guys, building a 468 for street/strip use. Goal is a 3700 lb car into the tens. I have a set of 049ovals and my plan was 11/32 valves and some porting. what areas … WebJul 30, 2009 · The 049 heads have 255/119 cc port size runners, with 122cc combustion chambers. It's really a toss up on which ones to use as the 049's flow more but the 781's will give a little more compression. Personally, I went with the 781's and had 2.19 intake valves and 1.88 exhausts put in. The same can be done to the 049's without any issues. can gum infection spread