Originally posted by Larry 31
Hi, I would like to get some info on what some of you think I should use for a carb on a 400sbc.The engine has been bored .030 and is using hyperreutectic flat top pistons with a crane cam with 266lift & 444dur.Using stock heads and valves & springs.A high volume oil pump.A edelbrock eps intake.So I would like to know what do you think would be the best size carb.Probably will be using an edelbrock also.TKS for any opinions you can offer.
There have been a lot of different posts on carb size.I will assume you mean 444 lift and 266 duration.The cam close to those specs. has a power band of 2,000 to 5,000. In a 400 depending on where you have the cam installed you can take 300- to 400 off the power band.We can say you will be out of power by 5,000 or maybe a little more.I would go to www.Holley.com. and look under tech. and then under select a size.In my past experience you are better off going with a smaller carb if in doubt.I know some people will disagree with this.