Best Stock Ls Heads For 6 0

Trucks are the everyday hotrods of the 21 st century. 1 89 1 55 valve sizes for stock 5 3 heads 2 00 1 55 valve sizes for stock ls1 and 6 0l lq4 heads power chart test 1 best power baseline from part i ls6 cam test. The obvious answer for any question regarding factory cathedral port heads is never the stock 706 heads and always the legendary ls6.

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What is the best factory ls head to use on a turbo engine.

Best stock ls heads for 6 0.

Displacement 364 cubic inches to be exact. The larger chambers on the 6 0 liter heads are ideal for strokers and boost meanwhile the ls6 heads are best suited for naturally aspirated and nitrous setups. Run on the dyno in stock trim with the 317 heads stock lq4 cam and truck intake the 6 0l produced 401 hp at 5 200 rpm and 432 lb ft of torque at 4 400 rpm. At 216 pounds the block is 100 lbs.

Heavier than the aluminum ls1 block. Basic bolt on upgrades for lq4 and lq9. Believe it or not the 706 heads from the 5 3l are the most effective and least expensive head upgrade for a mild daily driven 6 0l. 799 this is the test everyone wanted to see and the one every ls owner will be talking about.

The 799 heads offered the most flow bettering the 706 heads by as. The 6 0 liter 317 and ls6 243 or 799 castings are pushed to their limit with the largest stainless steel valves possible which are ideal for 4 inch bores. Modified 5 3l head test. Casting that could stand toe to toe with the best heads on the.

Gm s 706 vortec heads are the cheapest and most effective heads you can use for your 5 3l or 4 8l or even some 6 0l ls engine build. The heads flow similarly to ls6 heads but have bigger chambers making them boost friendly. The stainless steel valves provided with the heads measured a stock 2 165 inch diameter on the intake and 1 59 inch on the exhaust and externally the cylinder heads of all three versions tested. The hot factory heads would be the ls6 243 castings but even the stock ls1 heads can be made to flow well with proper porting.

For those unfamiliar with the ly6 the 2008 ls motor featured a 4 0 inch bore 3 622 inch stroke and was blessed with things like rec port ls3 heads and even variable valve timing vvt. Do they have a downside.

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