Web27 nov. 2024 · Our Compression Lessons chart illustrates how the compression would change with various heads. Unfortunately, we mistakenly installed a set of stock LS1 853 castings. Web20 apr. 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.
Are 862 Heads Any Good – A Detailed Overview – Rx Mechanic
Web317 heads are designed for a 4.000" bore motor. Your LS1 is a 3.900" bore motor. Therefore, you'll need a thicker gasket on your heads. Stock heads are 67cc and you are … Web24 sep. 2015 · These heads came on low-performance 6.0-liter truck engines in two variations: “873” cast iron (1999–2000) and “317” aluminum (2001+). The early design was the only castiron LS head ever made, ... (for lower compression) over the factory LS1 heads. Because these heads are no longer in production, ... mini maternity shoot kansas city missouri
823 Heads – Everything You Should Know About - Allied Motor Parts
Web3 jan. 2024 · 68K views 3 years ago Which factory LS cylinder head works best with a turbo, 706 or 317? It's the age-old comparison, airflow vs compression. This LS head shoot … Web1 apr. 2024 · All ls1 heads are within a stones throw of each other. Anyone who tells you one set is better than the other in terms of power is stupid. However, a few have advantages/disadvantages. 806 heads have perimeter bolt valve covers which can be a pain in the ***. Some 853's have a pry notch which limits you to a stock style composite … Web2 feb. 2024 · Compression Ratio: 10.1:1: Horsepower Rating: 345 hp: Torque Rating: 380 ft./lbs. LQ9 Applications. ... I have a 2000 6.0 iron block I have a set of 317 heads was told they came off an Escalade but he wasn’t sure what year I’m looking to get ARP head bolts ... as is the LS1. The LS3 is a Gen4 LS series engine. You can read this ... most savage war all times