The Stovebolt Site Forums The Shop Area Engine Shop Intake and carb swap on 292

Hey guys, I am thinking in the future probably in couple of months switching my 1bbl carb and stock intake to a small 4bbl and four barrel intake..How much horsepower would I gain?? I know it be a night and day difference in throttle response and all. I already got a set of brand new hedders still in the box for her sooo...just give me some estimates..if ya can..

Thanks,
Matt

have you found an intake manifold for the street?
it should be heated somehow... usually by H2O.

Clifford Performance.

chevyman6671,

Without any changes to the rest of your engine (besides the intake, carb and headers), you can expect anywhere from a 10-15 true horsepower gain max. Expecting more from an otherwise stock 292? Forget it!

There are many ways to get more HP from a 292. All of them are invasive and can get expensive quickly.

The next least expensive (and most logical) way to bump up your power would be to change cams. Something with no more than 205-210 degrees of duration and less than .500 lift. Any more duration is useless as the gigantic head bolt boss in the middle of the intake starts intefering with airflow. And any larger lift (over .500) requires higher performance springs. And the low compression, heavy stock pistons won't produce the compression to make power fast.

There are other methods short of turbo or supercharging or NOS, but they are invasive, VERY expensive, and require somewhat advanced building and tuning skills - lump port head, custom pistons, lightened and balanced rotating assembly, etc.

Though I'm far from an expert in engines, I built a mild mannered 292 a couple of years ago with the help of the guys here so I'll be glad to offer any help that I can.

-ftyler

thanks ftyler...mainly something that runs little better then the 1 bbl and little more throttle..it runs pretty good for stock!The 292 good little motor...not planning to do alot but keep it orignal...