Hey guys...so I'm running carb now but thinking about going TPI. I got a clean setup really cheap.

Motor is a 350, 30 over with twisted wedge 60cc heads and a 290h comp cam....230 lift @ .050"

I plan on controlling it with a fast efi multiport self learning kit.

What can I expect? Cam too big? Will it be fine?

 

it's a lose-lose situation. TPI is going to choke the Hp in the top end, and the cam is going to choke torque in the low end. Those parts make each other worse.

 

It will run. Cam aint huge being a hyd flat. But it aint small either. Bigger cam will hang hp out farther in rpm range, wont peak any higher but carry power curve usually. Depending on the carb intake you are using, car is probably gonna slow down. A performer rpm dual plane will outpower it by a large margin. Tpi will need upgraded base and runner to have a chance. Efi short runner intake would be better choice for power. All depends what you want

 

There are only TWO reasons to run TPI. Nostalgia, and a stubborn persistence to simply see how far you can push it. On my fully modded, yet stock appearing 89, there was no way I was running anything but a TPI. On anything else, no way I'd consider a TPI. There are simply cheaper, better alternatives in the year 2021.

 

I assume you meant 230 deg at .050. Generally, anything above about 225 deg regardless of ICL or overlap will not provide the low end torque you may want if it's purely a street car. Also depends on trans and rear gears. If an all out racer, 230 may not be enough with the proper intake. Most overcam a street car and then wonder why it has no snap below 2500-3000 RPM. It's because the cam is for high RPM with a higher torque curve. Essentially, what everyone else said, just in a different way.

 

The TPI on an SBC is great for looks and truck-like, tire burning hauling low RPM torque and power. Power above 5000 RPM? No.