RPO FY CID appl VIN HP BBLS Body/Comments
CUB 1975 350 4 spd trans. J L48 165 4 Vette
CUB 1977 350 LM1 L 170 4 B
CUB 1980 305 LG4 H 155 4 B
I would be willing to trust that the intake is original. Mine was when I picked up my V8. And, as listed above, one of the years is 1977. It looks to be the most common motor. A donor Corvette motor is hard to come by (atleast in my experience) and there is definetly a power difference between a 305 and a 350.
This is the website where I found the suffix chart:
http://www.nastyz28.com/chevy-engine-code-stampings.php
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"The people should not be afraid of their government. The government should be afraid of it's people."
"The Hurricane"
1967 Chevrolet C10
350 Eight Cylinder, 700R4
BowtieOverdrive
Cherry Bomb... Disturbing the Peace Since 1968.