G'day guys, just rebuilding a 2 litre with 104 cam, mild headwork. Don't know if I want to go 32-36 progressive or twin 36 webers. Any ideas? Bus is a daily driver,25000km a year, looking more for reliability and economy, a little pep is always good though. I think 40mm twin would be too much given the motor is only mild not wild.
Twins. A centre-mounted manifold will strangle it. It's the venturi size, not the absolute size of the carb, that'll determine how the engine behaves. I'd keep the venturi size down on a bus.