706 heads ???
02-15-2007, 05:21 AM
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Originally Posted by 4.8T
i think the 706's are also mexico made. snake eater had those on his silverado and his yukon. both made in mexico. and there suppose to be sand cast or something like that. his silverado was a 2000 and his yukon is a '05.
My truck was made in Ft. Wayne Indiana??
02-15-2007, 03:01 PM
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Originally Posted by JT-bo
02 here with 706 castings but I am currently trying to figure out why I have a DBW throttle body and not the cable driven type so don't go off of my 2 cents.
02-15-2007, 03:18 PM
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Yeah I've got it but what I want to know is why you don't see it more often. Mine is the only truck I've seen in person that has it. If it were up to me I would get rid of it.
Traction Control = DBW
02-18-2007, 08:14 PM
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706 is sand cast and 862 is die cast. Sand casting is a smoother method and in theory will flow slightly better. There was a long discussion on LS1Tech a year or two ago about this. Supposidly the 706 heads will make 5-10 more HP, but that was hear say and no one had dyno results to back it up.
In my own experience, my 00' ECSB ran 14.7@92 with cheap muffler, drop in K&N, and HPP3. It had 706 heads. My 05' Yukon has 706's too and ran 15.6@88 with muffler, K&N, and rough tuning. I have it tuned much better now and gutted the cats so I bet low 15's are possible. Both with 706's and both running better than average times for the mods.
In my own experience, my 00' ECSB ran 14.7@92 with cheap muffler, drop in K&N, and HPP3. It had 706 heads. My 05' Yukon has 706's too and ran 15.6@88 with muffler, K&N, and rough tuning. I have it tuned much better now and gutted the cats so I bet low 15's are possible. Both with 706's and both running better than average times for the mods.
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