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035 = die cast
317 = sand cast
Which is a better casting process ??
Dave
Just noticed this while I was searching for something, and the fact that nobody answered this. Die cast is the "better casting process" from the standpoint it renders a more consistent product.
If you're referring to ME starting a new thread, It's because it is in THIS thread that the two different CCs are given for the 806 head. I am justing looking to get it clarified.
I have a 2003 Chevy Suburban with the 706 casting heads on the LM7 5.3ltr and have recently come across some 2000 Corvette LS1 Heads casting 853. The owner is willing to give me the CAM, Lifters, Push Rods, and Full Head Assembly for $275.00. Number one question is, are these heads compatible with my engine without major modifications? Number two question is are they really any better than the 706 series casting other than the slightly larger intake valves?
Thanks,
Z
Quote:
Originally Posted by Tin Indian
Below is what I have. BTW, you stated that the 933 and 806 97-98 LS1 heads have a stock chamber volume of 69cc. I believe that is actually 66.67cc
__________________________________________________ __
Casting Number 806 or 933
LS1 (Perimeter Bolt)
97-98 5.7L Passenger Car and Corvette
Material: Aluminum
Combustion Chamber Volume: 66.67cc
Intake Port Volume: 200cc
Exhaust Port Volume: 70cc
Intake Valve Diameter: 2.00 inches
Exhaust Valve Diameter: 1.55 inches
Casting Number 853 or 241
LS1 (Center Bolt)
99-00 5.7L Passenger Car and Corvette (853)
01+ 5.7L Passenger Car and Corvette (241)
Material: Aluminum
Combustion Chamber Volume: 66.67cc
Intake Port Volume: 200cc
Exhaust Port Volume: 70cc
Intake Valve Diameter: 2.00 inches
Exhaust Valve Diameter: 1.55 inches
i hate to beat a dead horse but i'm tradin my 55 chevy for a 99 z that has a 6.0 the heads cast number i believe was 714 ???? is there such a head number ?? thanks
Great info on this thread. Does anyone know the difference between 862 and 706 castings? The specs shown seem to be the same but there must be a difference otherwise there would be no difference in part number. Could it be the bore diameter?
__________________ SLP Lid, FAST 90/90, Kooks LTs and catted Y, DMH cutout, Flowmaster Catback, Bilsteins, UMI Swaybars, BMR SFC, Racetronix Pump, Dyno Tune, and lots more.
You guys forgot 799 heads, which cam on the HO aluminum 5.3s (L33 and LH6)..they are basically the same as ls2 243s. They are also same as ls6 heads just without the lightweight valves.
Good info. My car has 241 heads on it though. Weird for a 2000. Maybe I read something wrong though.
Several 2000 model cars ended up with 241 heads...especially the ones with later build dates. I have seen a few 2000 model cars in my area that have had 241 heads stock. Just like some 01-02 fbodys got the LS6 block instead of the LS1 block.
