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DansBlown73Nordic
12-12-2002, 06:49 PM
I have chance to pick-up some heads. These will be for a 427 Im going to build. I have these casting #s 781,772,292,and 820.....Are any of these any good? I looked on Mortec.com Im just not sure what ones are best.
Hotcrusader76
12-12-2002, 07:39 PM
What is your intention for using this motor? Race? Cruise? Don't know? :D
That can make the difference in money and where it could be better spent...
396_WAYS_TO_SPIT
12-12-2002, 10:19 PM
Dans66Stevens:
I have chance to pick-up some heads. These will be for a 427 Im going to build. I have these casting #s 781,772,292,and 820.....Are any of these any good? I looked on Mortec.com Im just not sure what ones are best.I have 2 sets of the 781's and everybody said they were very good. If you go to www.google.com (http://www.google.com) and type in chevy head identification you will get some site that will tell you the difference between the #'s. Thats what I did.
396
DansBlown73Nordic
12-12-2002, 11:16 PM
I guess I should have given a little more info. The engine will be for pleasure. That means a once in a while blast. :D I know these heads are oval port. They are also all open chamber, but some have different cc,s I have a set of stainless valves I will be using. I just thought maybe someone thought one set was better than another. Dan
1tricky1
12-13-2002, 11:16 AM
Dans66Stevens:
I guess I should have given a little more info. The engine will be for pleasure. That means a once in a while blast. :D I know these heads are oval port. They are also all open chamber, but some have different cc,s I have a set of stainless valves I will be using. I just thought maybe someone thought one set was better than another. DanAs far as oval ports I've heard the 049's are the best, they have a bigger exhaust port and flow the best with a little work. The 781's are also desirable. It appears the 820 and the 781 are alot alike. The 820 has a smaller cc chamber therefore a little more compression would be achieved. Good luck! :D
396_WAYS_TO_SPIT
12-13-2002, 07:06 PM
Dans66Stevens:
I guess I should have given a little more info. The engine will be for pleasure. That means a once in a while blast. :D I know these heads are oval port. They are also all open chamber, but some have different cc,s I have a set of stainless valves I will be using. I just thought maybe someone thought one set was better than another. DanI think the 781's are 119 or 118cc's. I cant remember but its one of those numbers.