Interestingly (or not!) the high volume pump I installed on my original early cover had slightly taller gears than the OE later setup. Only by a mm or so, so unlikely to make much of a difference but enough to stop me fitting them to the later cover when I changed that!
Bt of a tangent but as AS's resident Rover V8 expert, do you know of a UK source of (cheap!) alternative rocker covers apart from the usual Rover types? Not so much to 'dress up' the engine, more to dress it down. I was thinking of fitting a pair of Buick steel covers, mainly just to fox anyone looking under the bonnet!
P76 would do the trick as well but reckon I'd be lucky to find anything over here.
I found exactly the same, high"er" volume pump gears are nearly 2mm taller than the big gears.
just means that if you need to replace the gears you need to buy a whole new kit at £90 + vat rather than the big gears for a standard post 76 cover which are nearer £30.
Car now has a post 76 cover on it which matches the engine number to save that confusion. I notice that Famous Four are supplying the smoll oil pump gears, might just try a set of those and do away with the adapter plate on the early engine cover.
Sorry but I have no idea on alternate rocker covers. I am looking for a set of covers for an early 70s engine so at least it looks the part, round corners and filler 2" or so back from the corner. everything on ebay has been powder coated which I do not want.
Also on the search for any engines number starting 355.