Thoughts on this 318 build
Do not go with a double pumper carb, you will wash oil off the cylinder walls and have gas in your oil.
Sorry ch1ll. Worst advice I have seen in years. A properly tuned carb is what you need and that my dear sir is your job no matter the size of the carb. Though I myself wouldn’t use an 800 cfm carb on a 318 as mildly built as yours, it’s still something that would have to be tuned.
I’ve used double lumps since I’m 20, I’m 56 now. They can be a lot of tuning points on them to adjust to make them sweeter than sweet. It can be a process if you’re touching everything on them but seldom have I needed to get crazy with them. Here’s why I’d shy away from a DP on this build.
I happen to absolutely love an AVS & a TQ.
Ch1ll made his recommendation on ether of these two old complete gems of carbs and I’ll say if you can find a 750 AVS or a good working TQ, they get the old school nod and vote here as well.
They are (for me) easier to tune and more forgiving and will respond really well. Jet it, set it, forget it. You’re done and they only need minor maintenance. Just keep the air bleeds clear with a shot of brake cleaner once a year. Done!
If an old AVS or TQ isn’t viable or available, the Edelbrock AVS II should be employed.
The Performer is OK for this build but a RPM would be better. Though I would not bother getting the RPM of you already have the performer. If you can do some port matching on the performer as far up the runner as you can, you’ll do just fine.
At such a low power build, you’ll be hard pressed to know the difference unless you go to the track for a time slip. If this is a driver, run what ya got.
If you already have the mufflers, OK and fine. If not, get the Hooker Aero Chambers. (A much better chambered muffler.) You can couple them with a Summit Racing exhaust kit.
IMO, your converters stall is a bit low. It’ll run and drive OK with that 2200 but I’d go 2500 without batting an eye. Go with a good converter company. I know it’s pricey but it is OOOOOO SO WORTH IT!
Look at places like Dynamic, Pro Torque, etc….
Buy once, cry once. At least you won’t have to buy again and cry twice.
