PaulT

Thanks for the info Steve. I agree I think it is an early beasty judging on the position of the odd engine number and the 10.5 : 1 compression ratio. I think some early P6 cars had this high compression ratio engine as well. It seems to run fine on unleaded but the previous owner was not at all knowledgeable about the cars history so it will be up to me to find all this stuff out. As the motor is running fine (better now I have balanced the carbs and cleaned all the plugs and replaced the rocker cover gaskets etc) I will leave well alone for the moment apart from an oil and filter change as well as a coolant flush. All I have to do know is work out which auto box it has on it. I am going to have to get under the car and have a look at the ID plate. Where's the trolley jack and axle stands!!!!! I suspect at the very least the box will need a service and some fresh ATF.

Morning all, I am hoping that someone will be able to answer my query on the origins of my Rover V8 engine that resides in my Stag. I have found what I believe is the engine number stamped on the rear of the block where it couples to the torque converter/auto gearbox. I can read the compression ratio and it is 10.5:1. The engine number is 568226350 and this does not appear as a number in any of the Rover lists that I have. The compression ratio seems to suggest that it is from a P5 or a P6. The carbs are SU and the air filter assy wraps around to the rear of the carbs into a central filter cannister. Anyone any ideas where this engine may have come from. Many thanks in advance. PaulT