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Re: 350 engine
If it is a crate engine, have they always been 4-bolt blocks or was that only a more recent thing? Could very well have 4 bolt main caps.
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Alex V.
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1967 C10 Suburban, 350/NP435, Green/Green, PS, PB, HD cooling, charging, shocks, and springs.
1985 GMC C3500 SRW, Sierra Classic, 454/TH400, white/blue.
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