Quote:
Originally Posted by hauss
I have a stroked 427. I believe it has a 750 cfm carburetor I was thinking of a 950 cfm carburetor because of a large cam. I think, I would gain some horse power, just was wondering what others with more experience think. The previous owner, polished away the numbers so their is no stamp ,telling me the actual carb size.
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Not enough information given.
But based on these assumptions:
427 cu. in. (stroked small block)
Lightly modified
Mostly street driven
6000 RPM Redline
750 cfm is good.
950 cfm is too large unless it's
a modified motor with high
volumetric efficiency at redline.
Also does the fuel delivery system
have the flow capacity to feed a 950?
Too large of carb will feel sluggish
in street traffic where I assume
most of your driving will occur.
Could be an expensive letdown.
Best method if you don't know
specifics about your engine is to
get the car on a dyno and decide
based on the resulting imperical data.
A quick and dirty ballpark method is
Summit Racing's carb cfm size calculator:
https://www.summitracing.com/newsand...cfm-calculator