Junkyard heads
Teching In
Joined: Feb 2007
Posts: 7
Likes: 0
From: India-No-Place
Cracking The early ones had that problem. The new ones not so much. Like everything engine, Keep it cool, and do not run compression over 9.5-1 with cast iron. The weekness in these heasd comes between the valves from what I have seen. As cheap as they are, you are better off to buy new ones. they are cheap as dirt as far as heads go. Great performers though.
Originally Posted by The stunningman
Personally can't care less what the magazines say. Every set of 906's I have got had the hardened seat which hangs over into the exhaust flow exiting. Anyone that has truly worked with both castings can easily distinguish the stock seat difference. 062's are the standard production set to be looking for.
Intake flow between the 2 should (will IMO) be identicle. Exhaust flow can be equaled though $$'s spent.
"there are only two Vortec castings, 062 and 906. They both flow identical intake and exhaust.
Intake flow between the 2 should (will IMO) be identicle. Exhaust flow can be equaled though $$'s spent.
"there are only two Vortec castings, 062 and 906. They both flow identical intake and exhaust.
Originally Posted by 1997bird
Sallee Chevrolet is a dealership! I gave you a link to their tech forum. I work with the vortec heads ALL of the time. One of my biggest customers runs the vortec 350's & the Mark VI BBC's on their compressor motors. The 062 is the replacement part number for the 906 induction hardened valve seat cylinder heads. I work with the hardend press fit valve seat heads all of the time and there are not that many sets that have any sort of lip under the valve seats.
Are you retarded? 906's are the only casting with the hardened seat. So if you are in a wrecking yard and you run across a set of 906's and 062's get the 062's would be a good rule of thumb. The pressed in hardened seat is the lip retard.
duh!. The 906's I have came across have HAD the hardened seat. I have got some of the worse misinformation from Stealerships. BTW 906's and 062's have BOTH been produced since 1996 with the 906's being the ONLY casting with the hardened seat. 
"These motors run 24 hrs per day and are going on 4 yrs of service without a rebuild. The motors only turn 2200-2400 rpms but to get the life out of them you HAVE TO KNOW how to build the heads properly."
WTF cares?
Man go recommend some more really funky erson grinds somewhere and stfu.
Last edited by The stunningman; Feb 23, 2007 at 06:21 PM.
For the record, and you surely already know this since you work at a dealership...062 and 906 are part of a casting number, not a part number...
AND, at Scoggin Dickey we now have a more affordable heavy duty casting of the Vortec heads available! They have more meat around the areas that have been known to crack as well as a thicker deck. Stock sized valves with chromoly retainers and springs and machining good to .475" max lift are $569.00 per pair!!!
Similar good to .525" max lift are $623.90 per pair!
Finally, good to .600" max lift and setup for hydraulic roller are $709.90 for the pair!!
We've got them all in stock ready to ship! Give me a call, I have everything you need for your SBC's!
AND, at Scoggin Dickey we now have a more affordable heavy duty casting of the Vortec heads available! They have more meat around the areas that have been known to crack as well as a thicker deck. Stock sized valves with chromoly retainers and springs and machining good to .475" max lift are $569.00 per pair!!!
Similar good to .525" max lift are $623.90 per pair!
Finally, good to .600" max lift and setup for hydraulic roller are $709.90 for the pair!!
We've got them all in stock ready to ship! Give me a call, I have everything you need for your SBC's!
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Stunningman do you know what the words "induction hardened" means? The 906 casting is a generalized partial casting number. They made bolth the hardened valve seat versions that have the pressed in valve seats and the induction hardened valve seats. Try a search so that you have a clue next time you ramble on about rumors of the "bad vs the good" set of heads. For me I think I would listen to SDPC's performance center, who actually sells a ton of these heads every day!
Originally Posted by 1997bird
Stunningman do you know what the words "induction hardened" means?
Originally Posted by 1997bird
The 906 casting is a generalized partial casting number. They made bolth the hardened valve seat versions that have the pressed in valve seats and the induction hardened valve seats.
Originally Posted by 1997bird
Try a search so that you have a clue next time you ramble on about rumors of the "bad vs the good" set of heads.
Originally Posted by 1997bird
For me I think I would listen to SDPC's performance center, who actually sells a ton of these heads every day!
