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

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Old Aug 7, 2023 | 05:38 PM
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90 C4 L98. What am I going to need to do to remove and replace the header on the right bank?
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Old Aug 7, 2023 | 07:31 PM
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Did mine without removing anything but the dipstick tube in the right side. Of course I had it off the ground about 4 feet. Easy to do if you have access to a lift
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Old Aug 8, 2023 | 11:42 AM
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I wish I had access to a lift. I was just worried about that last bolt on the right bank. Not much room to work there and was worried about lifting the engine several inches to reach it. Did you reach that bolt from below?
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Old Aug 8, 2023 | 12:11 PM
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On my 1989 and on my 1991 the rearmost passenger right side header to cylinder head bolt I removed with a medium length flat box end wrench coming from below. Flat box end wrench, no offset angle.

The first time I tried a ratchet and socket and ended up cross threading the hole due to the small clearance.

Had to chase the threads with the head in the car.
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Old Aug 9, 2023 | 10:32 AM
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Thank you. Really do appreciate the information. Stupid me didn't think about getting it from below. Everything else I figured I could resolve, I was just worried about that one bolt.
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