There are a lot of folks that have built for 4bbl's. It's important to make your compression adjustments based on chamber volume. CC the head first, then determine how much needs to be taken off to hit your compression goal. Cutting 0.xx off the head can't be answered until you know where your starting from. Chamber sizes vary widely.
In many cases, mild builds won't benefit from a 4bbl as much as you might think, if at all.
The 390 will be a good choice for less radical builds. I ran a 390 for quite a while. There is some tuning work ahead, so be ready for that. Ignition timing and curve, compression, cam choice, and further flow work - to include exhaust upgrade choices need to be considered up front.
Other popular carburetors are the Edelbrock and Carter 500 and 600 offerings, as they are commonly available.
More radical builds use Two barrel 350 and 500 cfm Holley's, 600 cfm Holley 4 bbls, and periodically you will see all out race motors with 600 cfm double pumpers.
I currently run a 500 cfm Carter AFB. The AVS is another consideration for ease of adjustment.
To effectively use the 390, you will want higher than 8:1 compression. 9 or 9.5:1 is commonly the target.
I run 10.3:1 to good effect. I'm just beyond the point where the engine will burn Regular Unleaded. It's not a Daily Driver, so I don't sweat it.
To determine specifics on how you should proceed, further information is needed about your goals and how your car is set up. Torque converter stall, rear gears, and use would be helpful.
There are a lot of builds out there, some don't cost much, others are a wee bit pricey. Budget is going to be an important part of your equation.
If you don't want to spend five grand on the build, a Stroker would be a poor choice unless you have your own machine shop and jobber parts rates!
CJ
