C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Casting mark on 113 heads (88-91)

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Old Aug 8, 2004 | 07:07 AM
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Default Casting mark on 113 heads (88-91)

What are those triangle things in the center of the heads?
TIA
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Old Aug 8, 2004 | 07:42 AM
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Default Heads

This end up
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Old Aug 8, 2004 | 01:09 PM
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Originally Posted by chucks88
This end up
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Old Aug 8, 2004 | 01:13 PM
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Ok Ok, any other ideas....
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Old Aug 8, 2004 | 01:28 PM
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*I* really don't know. I just looked at a pair of BowTie heads and don't see anything like you describe. It may indicate the actual manufacturer or plant that cast them. Since it is a part of the raw casting, what is your concern?

RACE ON!!!
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Old Aug 8, 2004 | 01:31 PM
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Uhh, where is that dumb blush smiley...
Basically all I am doing is insuring it is a casting mark and not an arrow for installation, cause if it is, I have too left heads....
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Old Aug 8, 2004 | 01:44 PM
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Originally Posted by USAsOnlyWay
Uhh, where is that dumb blush smiley...
I have too left heads....
You're gonna need that BLUSH. SBC heads don't COME in left and right. There is only ONE part number of a given type of head. TWO used per engine. Evidence: One head has the accessory holes drilled in the front...the other in the rear. The water temp sender and aux fan switch holes are between #1 & #3 cyls at the front on the left side, and #s 6 & 8, at the rear on the right side. By the way, the rocker studs should point UP.

RACE ON!!!
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Old Aug 9, 2004 | 03:20 AM
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Hahahah!
Thank you CFI, this is what I thought. But I figured hey, if I button this puppy all up and then find this out....talk about blushing.

Speaking of buttoning up, I have some heads to put on!
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Old Aug 9, 2004 | 03:42 PM
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I've got both of the 113 aluminum head designs and don't remember an arrow on any of the castings. The only difference is that the 2nd design is counterbored for intake gasket retainers - front and rear bolts. Current also has LT4 springs and retainers sans the soft factory guide plates, so the stud is a little longer to take up the space left by the plates. Both have the front and rear drilled for the accessory brackets.
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