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706 castech head crack question

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Old 09-12-2017, 02:48 PM
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Default 706 castech head crack question

i am throwing together a budget 5.3 and have two sets of 706 castech heads. If my memory is right, one is from 06 and one is from a 05.
Is the crack issue something that happens right away or am I at risk even with heads that don't show signs of water at the bolt holes?
id rather use the heads I have but I'm going to be annoyed if I put work into a set of time bombs.
Thanks
Old 09-12-2017, 03:20 PM
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Are you sure they are castechs? I have a set of 706's from an 05 that are not.
Old 09-12-2017, 04:36 PM
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I checked both sets and they have that rectangle battery logo
Old 09-12-2017, 05:06 PM
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Gotcha. I went thru the same thoughts until I researched and found were not.

I wouldnt risk risk it personally on something that was going to be performance oriented but If it was my beater I would if I had nothing else.

where are you located? I have 2 sets of 862's? I would be willing get rid of a set if interested.
Old 09-13-2017, 06:57 AM
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Try BBJ auto cores on E-Bay for good rebuildable heads and other "STUFF"
Old 09-13-2017, 09:07 AM
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i guess ill run what i have. worst case i have four tries to get two right.
i would consider a set of 243s but i havent found any for enough of a deal to justify it this time around.
Old 09-13-2017, 10:20 AM
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If you want 243's, also look at 799's; they are identical to 243's, except sand cast instead of die cast, which does not matter functionally.



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