*scratches head*
do you REALLY need to know the gpm? i mean, even with the OEM belt driven, you've got a humongous range of rpms and thus gpm flows while the engine is running.
operating conditions are also widely variable, from high rpm no load ( blipping the throttle while in neutral ) to low rpm high load ( climbing a hill at slow speed ) and all variations in between.
i should think any electric pump which can handle a small block Chevy should be capable of cooling a 248.
let's think about it:
- external surface area of the piston sleeve is pretty constrained by displacement and cylinder count, the 248 is 8 cylinder, same as SBC
- regardless of block packaging ( straight instead of V ), you've still only got 8 cylinders to cool
- heat generated is going to be closely tied to engine rpm, Straight 8s don't really wind out that far
- heat generated is also going to be closely tied to displacement ( which is quantity of air-fuel burned for each stroke ), and 248ci just is NOT very big, being 100ci down from a SBC 350.
are standard size electric water pumps still too thick and you're trying to get the smallest package form factor possible?