black00WS6

Just wondering what the casting # is for 5.3 heads? I bought a set from a private seller and one is 706 and the other is a different number.

Thanks
John

BigTex

iTrader: (16)

I have a set of 862 castings.

black00WS6

One of mine is 862 and the other is 706?? Will this still be ok once they get milled and ported?

Texas Terminator

whoever is doing your head work should be able to tell you. as long as the valve size, deck, combustion chamber and runner volume is the same, you should be alright.

TEA Brent

The 862 and 706 are both 5.3 heads. If your wondering if you can use them as a pair the answer is yes, they will work as a pair, you just must use the old graphite style head gaskets.

black00WS6

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by TEA Brent:
<strong> The 862 and 706 are both 5.3 heads. If your wondering if you can use them as a pair the answer is yes, they will work as a pair, you just must use the old graphite style head gaskets. </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Thanks Brent, I'll be sending these off to you soon for porting. <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" /> What year of head gasket do I need to get?

thanks
John

Randy WS6

iTrader: (69)

I have a set of 5.3 heads laying here beside me.The heads came off a 2000 1500-Chevy Pick Up.The heads are casted 4.8 but thay came off a 5.3 the casting number is 862's. The heads are the same on the 4.8 and the 5.3 engines <img border="0" alt="[driving]" title="" src="graemlins/gr_driving3.gif" />