350 hp out of a fairly stock 340

mopar head said

What I`ve read it was a late 60s vette engine. 426 was like a $500 extra option. the 427 was several thousand option with close to 13-1 compression.
That`s a lot of coin in the late 60s

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the ZL1 "option" was $4700 in 1969 and supposedly only made it into two corvettes making them a jaw dropping $9500ish (base price was 4900). they did make them into 60 some odd COPO 69 camaros that were ordered with automatics for drag racing only, which again, tipped the scales at bit over 7K with that 4K option.

for comparison sake, that 4,700 is 38K in todays funny money.