WebAdd 100+ horsepower to your GM LS or Gen 5 LT engine with a Texas Speed & Performance cylinder heads and camshaft package! Our packages will include cathedral port, square port, and rectangular port cylinder heads to accommodate LS1, LS2, LS3, L99, LS6, LS7, LSA, LQ4, LQ9, L83, L86, LT1, and more! All packages will include a pair of cylinder ... WebApr 20, 2024 · 737 Posts. #11 · Jul 12, 2024. If you want to make power with a 5.3, you need compression or boost. The 799/243 head is great for flow, but given that your engine originally came with 706 heads, it likely has dished pistons. The 799/243 will kill what little compression you have now unless you mill them.
GPI - LS3 Heads / L92 Heads (Ported) - Gwatney Performance
WebTypical gains are 10-20rwhp. 226cc Full CNC Porting Package The go-to head for 450-500rwhp 5.7/6L's. Our high end machine work applied to GM's best cathedral head represents a phenomenal value to enthusiasts and serious competitors alike. 232cc Full CNC Porting Package WebJan 21, 2024 · RPO L99 and LS3 cylinder heads are aluminum with 68cc combustion chambers, rectangle intake ports with 257cc runners, D-port exhaust with 87cc runners, 2.165˝ intake valves and 1.590˝ exhaust valves. These heads can be CNC-ported to improve on flow and milled for higher compression. how to stop avoiding emotions
GPI – Ported OEM L83 (Gen V 5.3 DI) Cylinder Heads …
WebPolish Beams. $35 each. CRANKSHAFT. Grind – Race Crank: $115/hour – Includes chamfer oil holes, magnaflux and polish. Straighten: ... Street port: $500. Cut heads for receiver groove: $300. Pressure test heads: $80. ASSEMBLY. Engine Assembly: $115/hour with a $650.00 Minimum. FLYWHEEL. Flat flywheel: $115. Recessed flywheel: WebFeb 13, 2024 · 706 heads are very affordable. 706 heads are plentiful and easy to find. 706 heads have smaller chambers, so you don't lose compression. 706 heads are slightly superior to 862 heads due to how ... WebOct 15, 2024 · In a nutshell, the LS 862 heads are the best-performing, affordable, and ported 5.3 heads that will best suit your car. If you are looking for a high-performing cylinder … how to stop avg running in background