Re: WTB 4bbl intake manifold for a 23 series 327

Posted by TxGoat On 2023/10/31 13:36:20

Nope. The engine originally equipped with the 4 bbl intake probably combined it with more compression, a more aggressive camshaft profile, and a higher RPM horsepower peak. Adding 4 bbl intake and carb to an otherwise unmodified engine with (probably) lower compression and milder camshaft would not be likely to gain much, if any power, and it might de-tune the engine at some speed ranges. Getting the linkage to work correctly, especially with an automatic transmission, could be a headache. Some engines of the same displacement had a good many differences between 2 and 4 barrel versions,including compression, cam profile, valve size, and more. 4 bbls can perform better than 2 bbls under such conditions as going from 55 to 75 MPH in passing gear at wide open throttle. The rest of the time, they're mostly along for the ride.