having trouble with new install (SBC in boat)

[Tom68]

Thanks to everyone who contributed and helped me out.

Finally, after months of waiting for parts, then a 2 week delay in customs, the Holly throttle plate & Innovate TPS are on along with a 1" spacer to help alignment and clearances with other parts.

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I think I've found a stepper motor idle valve that will work with the MEFI2 ecu so I'll get active idle control back.

Performance wise, I reckon I must have been down at least 150hp / 150lbft, it's certainly back up to, if not better performing than when on petrol!

Great result, the 300A's aren't too bad but those bolt together diecast snorkels will kill even a 5 litre motor, the sand cast ones are bigger. But you've bypassed all that.