Drag Illustrated Issue 134, July 2018 | Page 29

Power Up. Take your racing to the next level with Trick Flow Super 23 230 cylinder heads for small Chevy. They’re the closest you can get to 18° cylinder head performance in a 23° design. Perfect for 400 cubic inch and larger engines using standard small Chevy valvetrain parts and headers. Highlights: angled spark plugs, extra-thick decks and walls for porting, raised valve cover rails, the best quality components, and your choice of CNC Street Ported runners for signifi cant performance gains or CNC Competition Ported runners for maximum fl ow and performance. Winning isn’t easy, but it’s easier with high performance Trick Flow parts on your engine! Dyno Results Super 23 230 Test Engine: 11.5:1 compression 406 c.i.d. with Trick Flow Super 23 ® 230 cylinder heads (TFS-3241T001-C03), mechanical roller camshaft (266°/270° duration @ .050"; .630"/.630" lift; 112° lobe separation), Trick Flow 1.5/1.6 ratio roller rocker arms (TFS-31400522), Edelbrock Super Victor intake manifold, Hooker Super Competition headers with 1 7 ⁄ 8 " primaries, open exhaust. 1807DUTF Airfl ow Results Super 23 230 with CNC Competition Ported Runners Lift Value Intake Flow CFM .100" 69 Exhaust Flow CFM 55 .200" 144 112 .300" 213 158 .400" 265 195 .500" 296 220 .600" 305 234 .700" 310 240 Tests conducted at 28" of water (pressure). Bore size: 4.155"; exhaust with 1 7 ⁄ 8 " pipe. To view more airfl ow charts, go to TrickFlow.com and type the part number you want to see into the Search box and then click “Search.” Some parts are not legal for sale or use on any pollution-controlled motor vehicles.