Which is which?
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Staging Lane
Joined: Feb 2010
Posts: 56
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Which is which? 
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I just picked up some 243 heads from an '08 Silverado for my '99 LS1. I just need to know if I got "driver side & passenger side head". I noticed there's an "L" on the head & "D" on the other. I'm trying to find out & make sure I didn't pick two of the same.
Last edited by tumadre; Sep 19, 2011 at 02:42 PM.
Thread Starter
Staging Lane
Joined: Feb 2010
Posts: 56
Likes: 0
so doesnt matter which bolt I can pull from the head and using one of the holes to screw in the coolant temp sensor thats outline in red..
using as driver side head?
also does the L" and D" even matter lol sorry new to this:/
using as driver side head?
also does the L" and D" even matter lol sorry new to this:/
Thread Starter
Staging Lane
Joined: Feb 2010
Posts: 56
Likes: 0
as much I'd like to but im not to sure what all I want to do with the heads first. there completly stock with less then 30k on these heads from what Im told.
Im go for that cam pkg from TSP. Im somewhat sketchy if I should touch them I dont want to fly cut cause I'll be using torquer v2 cam. should I give these heads a valve job?
Im go for that cam pkg from TSP. Im somewhat sketchy if I should touch them I dont want to fly cut cause I'll be using torquer v2 cam. should I give these heads a valve job?
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It is always a good idea to have something like that checked out at a reputable shop. 30k miles is like the magic number when it comes to car parts..... too many miles to look new and not enough to make you worry... you can bet your *** they have more on them than that. Have them checked out.
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Staging Lane
Joined: Feb 2010
Posts: 56
Likes: 0
okay, so I just took these heads to a local shop. just to get them checked nothing else!
before I even tell this guy what these came off of. This guy pointed out the problem with these heads they were poorly made from this company called
"Cast tech" in south korea. He pointed to this symbol
He said these came off the 07"-up model trucks 4.8,5.3 etc..they tend crack right around 50-65k right in the center of the head one will go before the other.. in my case these heads dont look cracked but he'll find out
my question to you guys have any of you herd of this???? should I be worried about this
before I even tell this guy what these came off of. This guy pointed out the problem with these heads they were poorly made from this company called
"Cast tech" in south korea. He pointed to this symbol
He said these came off the 07"-up model trucks 4.8,5.3 etc..they tend crack right around 50-65k right in the center of the head one will go before the other.. in my case these heads dont look cracked but he'll find out
my question to you guys have any of you herd of this???? should I be worried about this
okay, so I just took these heads to a local shop. just to get them checked nothing else!
before I even tell this guy what these came off of. This guy pointed out the problem with these heads they were poorly made from this company called
"Cast tech" in south korea. He pointed to this symbol
He said these came off the 07"-up model trucks 4.8,5.3 etc..they tend crack right around 50-65k right in the center of the head one will go before the other.. in my case these heads dont look cracked but he'll find out
my question to you guys have any of you herd of this???? should I be worried about this
before I even tell this guy what these came off of. This guy pointed out the problem with these heads they were poorly made from this company called
"Cast tech" in south korea. He pointed to this symbol
He said these came off the 07"-up model trucks 4.8,5.3 etc..they tend crack right around 50-65k right in the center of the head one will go before the other.. in my case these heads dont look cracked but he'll find out
my question to you guys have any of you herd of this???? should I be worried about this
Thread Starter
Staging Lane
Joined: Feb 2010
Posts: 56
Likes: 0
No.. he just pointed it out thats all. did mention he always gets trucks with this issue from GM dealer I walked in before they just closed. I did leave them there tho. Ima pick them up tomorrow morning maybe afternoon. I've been looking around on tech has anyone on here herd of this problem
L31 vortec truck (96-99) cast iron heads are desireable for dirt streetstock
racing...decent runners/flow from production head w/1.94 valves.
The original Canadian cast 906s flow better and are less crack prone
The new from GM 062s are (hecho en mexico)=POOP
There could be some validity to this Korean stuff
racing...decent runners/flow from production head w/1.94 valves.
The original Canadian cast 906s flow better and are less crack prone
The new from GM 062s are (hecho en mexico)=POOP
There could be some validity to this Korean stuff
Thread Starter
Staging Lane
Joined: Feb 2010
Posts: 56
Likes: 0
dang if this could be true.. and these heads do pass inspection. Now idk if I want to used these heads now:/ I dont want to end up putting money into these heads when one head might just crack on me down the rd
