You have a 2bbl with a 2bbl cam and 2 bbl gearing and 2 bbl manifold....and heads were small valve #17 (1968) or 47's (1969)
Unless you get bigger...meaning bigger heads and cam, will you extrapolate the need for ONLY replacing the carb and intake.
So, yes, in theory, you are inducing more air flow than the engine can efficiently handle.
The 350 HO had 2.11/1.77 intake/exhaust valves and were code #18 for 68 and #48 in 69. The Intake/exhaust on the 350 2 bbl were 1.96/1.66.
Unless you change the heads and cam to compensate for the additional flow...will you see a true performance benefit...All you have without changing anything else is a cool points 4 bbl carb and manifold that for lack of a better word, will not perform wella t all, even with the most conservative settings.
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1967 Starlight black PMD Engineering 400 Auto 1968 Alpine Blue 400 4 speed 1968 Verdoro Green 400 HO 4 speed 2013 1LE 2SS/RS Inferno Orange Camaro.
