Which fuel pump for a 3.5L V8 (P6)?

Hi - totally new to the forum and this is my first thread.

I've got a Series 3 Lightweight fitted with a 3.5L V8 (from a P6 Rover). Before the current engine it had a 2.3 or 2.8L V6 Ford engine.

The problem - lack of power. It just seems to missing that V8 torque and especially uphill or under load.

There dosnt seem to be anything wrong with the engine, in fact the mechanic that installed the engine for me is a specialist and I trust him.

Could the problem be the fuel pump as its still running the with same pump as it did with the V6.

Im thinking more capacity, more cylinders but same fuel pump = obvious problem?

Any thoughts on what pump I should fit and where on the vehicle I should mount it?

thanks

Sean

Hmm

Fuel pump doesn't need that much pressure or flow so I would have thought the existing one would be ok if it was supplying a V6.

The best replacement would be the early Rangie pump which was a Facet. Paddocks do an unbranded copy for about £35. It is gravity fed (although it will pull fuel vertically about 8 inches) so can be mounted anywhere near the fuel tank, up to 8 inches above the bottom of the tank.

Cheers

Chris