Best Heads For 5 3 Ls Turbo

This sort of modification will help the ls breathe at the top end without placing any extra demands on the ancillary components. The best factory cathedral port heads 243 799 and 317 castings flowed near 250 cfm which represented a huge step up from the conventional small block heads that preceded them. The 5 3 in question is a junkyard sourced l33 that hasn t had a lot done to it.

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We Find Out Which Factory Ls Head Performs Best Under Boost

Ls6 heads are the best choice only when all out power is needed.

Best heads for 5 3 ls turbo.

706 852 862 head. One of these days i will throw a 4 8 in something twin turbo it and just drive the piss out of the car. If you want to avoid issues it s best to plan your turbo ls build from start to finish. 1999 lr4 4 8 liter truck 1999 lm4 lm7 5 3 liter truck material aluminum part number.

Built for the popular 4 8 or 5 3 liter truck engines wcch uses a custom cnc program on edelbrock s pro port casting to create a torquey small runner design with great low and mid lift flow numbers. After running the same setup with the 706. Be prepared for a big price tag at the dealer or steep core charge from your head porter. If you re thinking about adding a turbo to your ls based engine this article is for you we look at everything you need to know about adding boost to.

With just a mild cam and valvespring swap a diminutive gen iii 5 3l ls can make north of 400 hp. The exhaust port is a unique d shape that improves flow. The best part about those motors is that they are a dime a dozen. Add pocket ported ls heads and gm s superior trailblazer ss intake manifold and you could be.

Another route more appropriate for the ls1 is the addition of the 5 3 liter lm7 heads which will increase compression while flowing at the same rate as the stock ls1 heads. All of the engines are great with a turbo but the 5 3 and 6 0 liter engines are the most popular. Both the 5 3 and 4 8 motors respond very well to boost. Run with the precision turbo procharger intercooler and 317 heads at 7 psi the 5 3l produced 691 hp at 6 700 rpm and 612 lb ft of torque at 5 000 rpm.

West coast cylinder heads edelbrock 4 8 5 3 liter. The owner jon capizzi who owns and operates capizzi automotive claims that it has slightly worked over stock 799 casting heads and it s obviously sporting a decent sized cam from the guys over at baker engineering jon attributes the success of the engine mostly to the camshaft design.

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