360 block limits

I don't know if there's a golden number, but I plan on spraying the piss out of my 421 this season. To the MOON, baby!

I have my own torque plates, which I think is a huge benefit when it comes to quality machining. Good hardware. Light rotating assemby. Correct ring gap and plugs range. And I have Ross add extra material around on the crown of my pistons. I also build my nitrous motors loose.

When it comes to carbureted nitrous motors, detonation is the killer. Because ultimately, it's impossible for a carb to distribute fuel equally to each cylinder. So eventually, the carb/intake is going to pick on a cylinder, and if you're not careful you'll window your block. On the big SHOT nitrous motors (300+), I much prefer EFI because each cylinder has its own dedicated fuel source and it's more controllable.

But if you have a quality motor with good parts, quality machining, adequate fueling, and you follow the golden rules, it should live for a while. If you f-up, it'll bite you. That's the game


You should go watch the 2023 Engine Performance Expo and pay attention to the round table discussions.

Here is the upshot. A carb gives the engine what it WANTS. EFI gives it what the tuner TELLS it.

There is a HUGE difference there and it’s worth understanding.

Fuel distribution issues are seldom a carb issue.