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Make:
Holden
Model:
Kingswood HQ
Year:
1971
Owner:
gtarhead
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Modifications
355 Stroker Build
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HOLDEN 355 Stroker Build



Decided last year that a 202 was never going to be enough for a HQ. Sold the turbo kit for the six in favour of a 308. Blue 308 block out of WB Statesman -Clearanced for stroker crank -New cam bearings installed -Bored 0.030" and honed -Smoothed casting flash and oil returns -Decked for zero deck height -Acid washed and cleaned -New welsh plugs installed Bottom End -ARP main studs -High Energy Baffled sump -Come Racing 355 stroker kit -Probe forged flat top pistons -10.5:1 comp -Chev I beam rods -355ci Chev journal nodular cast crank -King bearings -Balanced Top End -VN heads -stock exhaust ports smoothed -intakes smoothed and cleaned up with a fairly mild port -One piece stainless valves (stock sizes) - 3 angle valve cut -Heads machined for double valve springs and screw in 7/16 rocker studs. -Double valve springs to support up to .680" lift and guide plates -New valve stem seals, caps, collets -Precision Motorsport Roller Rockers 1.6 ratio -Crow chromoly pushrods -Crow anti-pump up lifters -Crow 4619 226/232 @ 0.050" with 0.505"/0.0523" lift and 110 LSA -Cast rocker covers Induction/Exhaust -Holley 4150 750CFM DP Mech secondaries -Come Racing medium rise single plane manifold -Castle Headers, Tri Y's with 1 3/4" inch primaries, 2 1/2" collector. - Plan to run twin 2 1/2" exhaust into crossover pipe then step up to twin 3" and Hooker Aerochamber centre in centre out mufflers. Might have left a few things out but thats all I can think of right now. lan to use it as a street/strip motor. Went with a hydraulic cam for now, but may upgrade to an angrier solid in the future...
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