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They did not make a 400 sb Chevy in 1974. But from 1975 to 1980 they did and the answer to your question is 8.5:1 from 1975 to 1977 Then from 1977 to 1980 it was 8.3:1 ratio. That is Advertised compression ratio.
I may stand corrected on the date when I said they did not make a 400SB. But The info. I gave you was all I could find. NEUTZ.
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What is Compression specs for 1974 nova 350?
Compression ratio on a 1974 Chevy 350 in a Nova was 8.5:1.
What is the compression ratio of a 1974 Chevy 350?
8.5 to 1 compression is factory stock.
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Some of the engine's distinguishing features are 390 cubic inch with 9.6:1 compression ratio, four barrell carb @300 hphttp://www.hiperformer.com/featured_engines/for_390lb.html
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Depends on the engine and transmission
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That all depends on what engine is in it and the rear gear ratio.
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A 10W-30 or 10W-40 should be fine.
Are the rocker arm studs in a 1974 Chevy 350 engine threaded or pressed into the head?
pressed in..
