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[C2] 67 L36 vs L68

Old 02-20-2019, 12:37 PM
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jwmac87
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Default 67 L36 vs L68

Were there any L36's (390HP) that were changed by a dealership to a L68 (400HP)? If so what would be the engine stamp IL or JC ??
Old 02-20-2019, 12:41 PM
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Nowhere Man
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Unless the dealer swapped out the block it would remain the same. No one will know if any dealer did that but it’s a simple swap. Just the intake, carbs, air cleaner, and other small parts.
Old 02-20-2019, 03:39 PM
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Old 02-20-2019, 06:14 PM
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63 340HP
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The dealer would not change the stamp on the block, regardless of what intake assembly was installed after they took delivery of the car.

Dealers made many parts swap, for paying customers, but documentation from the dealer is more important to a collector than the physical parts (for example, a Yenko invoice or similar document showing the change).

I would expect an L36 block with a 6-pack would receive flight judging point deductions (if a TF restoration is a goal, otherwise it looks cool and if it works well the 6-pack can deliver good fuel economy).

Last edited by 63 340HP; 02-20-2019 at 06:14 PM.
Old 02-20-2019, 08:49 PM
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jwmac87
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Just asking because I have seen a window sticker (reproduction?) that showed an L36 in the top part of the RPO's and at the bottom a L68 conversion that listed for about $104.00 extra. I guess the block should still have T----IC stamp on it. ??
Old 02-21-2019, 04:51 AM
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That is how GM billed the L68.
Old 02-21-2019, 01:13 PM
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MelWff
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Originally Posted by jwmac87
Just asking because I have seen a window sticker (reproduction?) that showed an L36 in the top part of the RPO's and at the bottom a L68 conversion that listed for about $104.00 extra. I guess the block should still have T----IC stamp on it. ??
As stated above the window sticker would show both, it is not a conversion, the block would be stamped by the factory JC.

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