Best Heads For 5 3 Ls

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.

Best heads for 5 3 ls.

Trick flow specialties tfs 3051t001 c00 trick flow genx 205 cylinder heads for gm ls 4 8l 5 3l 5 7l vortec. Add pocket ported ls heads and gm s superior trailblazer ss intake manifold and you could be. To further improve the power these heads were treated to mild porting. 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.

After installation of the 706 heads the power jumped to 468 hp at 6 800 rpm and 413. West coast cylinder heads edelbrock 4 8 5 3 liter. 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. 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.

Cylinder heads rocker arms. This sort of modification will help the ls breathe at the top end without placing any extra demands on the ancillary components. With just a mild cam and valvespring swap a diminutive gen iii 5 3l ls can make north of 400 hp. Run with the 317 heads the modified 5 3l produced 448 hp at 6 800 rpm and 398 lb ft of torque at 5 000 rpm.