WebIn recent years, Dart’s spread-port Big Chief heads have set the standard in classes ranging from Pro Street to Pro Mod. This tradition of innovation continued with the introduction of affordable Iron Eagle and PRO 1 cylinder heads for small-block and big-block Chevy V8s, followed by aluminum and cast-iron engine blocks designed to meet the specialized … WebSpread port heads have the center exhaust ports spread apart 5/8'' over stock L98 GM heads. The reason for spread port heads is to achieve additional cooling in the center of the head where the heat concentration is greatest. As standard headers do not fit, spread port headers are required since the center ports are spread further apart then ...
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AFR SBC 235cc Eliminator Race Aluminum Cylinder Heads - JEGS
WebThis style conventional big block Chevy head is a bridge between standard conventional big block heads and spread port heads, 20* and 18* valve angle. Yes, this is the head everyone has been talking about. RFD has taken this new casting and built several custom versions: fast bracket, truck pull, all out etc. WebDart Big Chief spread port head has D-shaped exhaust ports to equalize flow along the short turn in the ports and help to combat reversion. (Photo Courtesy Dart) Dart Race Series 24 … Web3 Feb 2007 · Yup, they are AllPro 245cc raised runner 23° castings, Spread port / Stall header flange ,,, but that's about where the similarity to any 23° head ends. Inside the casting there,, well...there my secrete weapon . She made just an eyelash short of 800 hp on a single carb, normally aspirated (no power adders) on a notoriously conservative dyno. cheap tyres 225 55 r16