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

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Old Mar 13, 2005 | 09:47 AM
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What year did GM start the roller block in the corvette?
Randy,
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Old Mar 13, 2005 | 10:43 AM
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Early 86 block had 1 pc rear seal and no roller provisions. I was told late 86 had roller provisions. Not sure though. 87 had them for sure.
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Old Mar 13, 2005 | 12:40 PM
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I believe 87 too. Late 86 came with the first aluminum heads, and the 87 got them both; heads and roller.

Jake
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Old Mar 13, 2005 | 01:12 PM
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87 is the first year for the roller block.
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Old Mar 13, 2005 | 04:37 PM
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With Vader86, I've had my late 86 vert apart it's definatley not a roller lifter block.
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