Page 1 of Cylinder Heads 2008 by Parts Pro

racing head servicetm racing head servicetm a dominant force in the history of cylinder head technology is back with a vengeance utilizing the acquired resources of pro topline cylinder heads in combination with the industry s largest engineering team and the most advanced cylinder head manufacturing foundry in the world rhstm has re-emerged as the performance cylinder head leader right out of the box racing head servicetm out of the box performance pro topline cylinder heads are now known as rhs in combination with the industry s largest engineering team and the most advanced cylinder head manufacturing foundry in the world rhstm has re-emerged as the performance cylinder head leader incorporating an advanced vertically integrated manufacturing process rhstm executes cylinder head creation from concept through final machining all in one location gone are the days of purchasing new cylinder heads only to discover that extensive final machining is required for optimum performance rhstm s unique manufacturing process ensures that chamber and runner volumes port-to-chamber surface transitions and related design features hold extreme tolerances ­ achieving as cast standards not possible with traditional manufacturing pro actiontm 23° small block chevy ready to go right out of the box these heads all feature bronze guides multi-angled inlet and radius exhaust with ductile iron seats these accept standard rockers and valve train components and 1.550 springs pro actiontm big block chevy rhs bb chevy heads are tremendous performers for street drag race and powerboat applications these heads offer more features higher flow characteristics and better finishing quality ultimately yielding more hp for your big block chevy pro actiontm small block ford windsor rhs brings advanced engineering proven performance and unsurpassed finishing quality to small block ford windsor and 5.0l engine applications these heads accept all original equipment and aftermarket performance parts making installation and assembly simple pro torkertm small block chevy pro torkertm vortec heads outflow all previously available sb chevy iron cylinder heads made from premiumquality cast iron using our patented clean cast technologytm pro torkertm heads deliver the competitive edge in racing classes where iron heads are required certified valve train components pro elitetm gm gen iii ls1/ls2/ls6 full cnc the gen iii cylinder heads are fully cnc-machined for consistent quality and suberb airflow pro elite gen iii heads have a rolled-over 11° valve angle for increased piston-to-valve clearance velocity and atomization over the stock 15° angle and a valve cover rail that has been raised .500 allowing for higher port roofs and for aftermarket rocker systems to be used with stock valve covers without a spacer pro elite gen iii headers will accept all popular gen iii intake manifolds including the fast lsx pro actiontm 23° small block chevy flat tappet hyd roller bare assembly assembly description valve sizes application 12029 12029-01 12029-02 alum 12032 12032-01 12032-02 alum 12317 12317-01 12317-02 iron 12319 12319-01 12319-02 iron 12320 12320-01 12320-02 iron 12322 12322-01 12322-02 iron 12324 12324-01 12324-02 iron 12336 12326-01 12326-02 iron pro torkertm small block chevy 12400 ­­ ­­ iron 12401 ­­ ­­ iron 12402 ­­ ­­ iron 12403 ­­ ­­ iron 12407 ­­ ­­ iron 12410 12410-01 12410-02 iron pro elitetm gm gen iii ls1 2 6 full cnc 54210 ­­ 54210-02 alum 54225 ­­ 54225-02 alum pro actiontm 24° big block chevy 11001 ­­ 11001-02 alum 11002 ­­ 11002-02 alum 11301 ­­ 11301-02 iron pro actiontm small block ford windsor 35005 35005-01 35005-02 alum 35301 35301-01 35301-02 iron 220cc runner 64cc chamber-angle 235cc runner 64cc chamber-angle 180cc runner 64cc chamber-straight 200cc runner 64cc chamber-straight 200cc runner 64cc chamber-angle 220cc runner 64cc chamber-angle 235cc runner 64cc chamber-angle 220cc runner 50cc chamber-angle 170cc runner 76cc chamber 170cc runner 76cc chamber 170cc runner 67cc chamber 170cc runner 67cc chamber 170cc runner 64cc chamber 170cc runner 64cc chamber 210cc runner 62cc chamber 225cc runner 62cc chamber 320cc runner 119cc chamber 360cc runner 119cc chamber 320cc runner 119cc chamber 200cc runner 58cc chamber 180cc runner 64cc chamber 2.020 1.600 2.080 1.600 2.020 1.600 2.020 1.600 2.020 1.600 2.020 1.600 2.080 1.600 2.020 1.600 1.940 1.500 2.020 1.600 1.940 1.500 2.020 1.600 1.940 1.500 2.020 1.600 2.040 1.570 2.080 1.600 2.250 1.880 2.300 1.880 2.250 1.880 2.020 1.600 2.020 1.600 max street perf oval track/drag 383-400c.i race head unlimited oval/drag 400c.i street perf up to 350c.i street perf short track 327-350c.i street perf short track 327-350c.i max street perf oval track/drag 383-400c.i race head unlimited oval/drag 400c.i max street perf oval track/drag 383-400c.i street perf up to 350c.i street perf up to 350c.i street perf up to 350c.i street perf up to 350c.i street perf up to 350c.i street perf up to 350c.i high street performance/strip high street performance/strip street performance high street performance/strip street performance high rpm street/race street 302-351c.i some parts are not legal for sale or use in california on any pollution controlled motor vehicle 123

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