what engine did 706 heads come on
The LS 706 Heads wound up on different models of the Chevy family and fit with the high-performing LM7, LR4, and LM4 5.3 engines. The engine specialists have remanufactured these high-geared cylinder heads at a much more affordable cost and make them the best-performing, cathedral-port factory heads out in the market.24-Nov-2021
What year came with 706 heads?
See all 5 photos 706 heads can be found on scores of 1999 and up GM 5.3L and 4.8L engines.13-Feb-2020
What LS engine came with 706 heads?
The LS 706 Heads wound up on different models of the Chevy family and fit with the high-performing LM7, LR4, and LM4 5.3 engines. The engine specialists have remanufactured these high-geared cylinder heads at a much more affordable cost and make them the best-performing, cathedral-port factory heads out in the market.24-Nov-2021
Are 706 heads better than 862?
The 706Vortec heads are even slightly superior to the commonly found 862 heads. The reason is that the 706 heads are SPM (semi-permanent mold) made, while the 862 heads are sand cast. The SPM method is considered to be a more consistent process, but once you port the 862 head, any difference to the 706 head goes away.13-Feb-2020
What trucks had the 706 heads?
See all 5 photos 706 heads can be found on scores of 1999 and up GM 5.3L and 4.8L engines.13-Feb-2020
What cars did 706 heads come on?
These heads came on hundreds of thousands of 1999 and up GM 5.3L and 4.8L engines, so they are super plentiful in scrapyards. And according to …
Are 706 heads better than 862 heads?
The 706Vortec heads are even slightly superior to the commonly found 862 heads. The reason is that the 706 heads are SPM (semi-permanent mold) made, while the 862 heads are sand cast. The SPM method is considered to be a more consistent process, but once you port the 862 head, any difference to the 706 head goes away.13-Feb-2020
Are 706 heads better than 799 heads?
The 799 heads offered the most flow, bettering the 706 heads by as much as 20 cfm at some lift points. The chamber volume on the 799 heads was within 2.5 cc's of the 706 heads, but the dyno indicated this did not translate into power on our test engine.22-Dec-2017
What year came with 706 heads?
See all 5 photos 706 heads can be found on scores of 1999 and up GM 5.3L and 4.8L engines.13-Feb-2020
Are 862 heads the same as 706 heads?
The 862 heads are virtually identical to 706 heads in most ways. They have the same valve size, port, and chamber cores. The difference lies in their compression ratio and make. While 862 heads are sand cast, 706 heads are semi-permanent mold.15-Oct-2021
What LS motor has 862 heads?
GM Chevy 4.8 / 5.3 #862 LS Cylinder heads (NO CORE)
What engine has 706 heads?
The LS 706 Heads wound up on different models of the Chevy family and fit with the high-performing LM7, LR4, and LM4 5.3 engines. The engine specialists have remanufactured these high-geared cylinder heads at a much more affordable cost and make them the best-performing, cathedral-port factory heads out in the market.24-Nov-2021
Are 706 and 862 heads the same?
The 706Vortec heads are even slightly superior to the commonly found 862 heads. The reason is that the 706 heads are SPM (semi-permanent mold) made, while the 862 heads are sand cast. The SPM method is considered to be a more consistent process, but once you port the 862 head, any difference to the 706 head goes away.13-Feb-2020
Are 706 LS heads any good?
Although the 706 heads do have smaller valves compared to 317 heads, they are still solid performers that will keep your compression ratio in the sweet spot. 706 heads can be upgraded with larger valves for even more performance if you have the spare cash laying around.13-Feb-2020
Are 706 heads better than 317 heads?
The 317 heads flowed more than the 706 heads by as much as 20 cfm at some lift points. The peak flow numbers differed by just 7 cfm at 0.700 lift. What made the 317 heads both kissed and cursed was the combustion chamber size. The massive chamber volume of 71.5 cc's put them a full 10 cc's over the 706 heads.24-Dec-2017
Is it worth porting 706 heads?
Now, porting the 706 heads will definitely help power. We have seen ported versions of these heads from sources like Total Engine Airflow unearth flow numbers that exceed 300 cfm, so flow potential was not a problem.26-Oct-2019
How much HP can 706 heads hold?
After installation of the 706 heads, the power jumped to 468 hp at 6,800 rpm and 413 lb-ft of torque at 5,300 rpm. The 706 heads consistently improved the power output of the naturally aspirated 5.3L by 20 hp. But how would they compare under boost?13-Mar-2018
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