Join Date: Mar 2016
Location: Lake Mary, Florida
Re: Holley Carb ID
Is it going on a small block? If so, 950 CFM is quite a large flow for it. It will most likely run poorly and/or lousy gas mileage. I have found that for a stock or slightly modified small block, 600 to 650 CFM is a good choice for drive ability and fuel mileage.
Check the jet sizes; they may also be way too much for a small block.
When I was young and stupid, I always thought that bigger was better. Never bothered to read up on CFM sizes, and what worked best for an engines CID size and breathing capability. Now that I'm older (but still carry stupid traits at times), I read and take the advice of the manufacturers recommendations, along with hot rodding tricks and advice.
If you do try it on any engine that is not set up to breathe and accept 950 CFM's worth of air, don't blame the carb if it performs poorly. It will most likely be too much for the engine.
Never argue with an idiot; they'll only drag you down to their level, then beat you with experience.