it doesnt make ALOT more torque - think there is a maximum of 10lb/ft in it

if you just stick the 1800 bottom end on then you will have a low compression engine - which wont be overlly powerful

the 1600 sump really doesnt want to fit on the 1800 block - and the oil pump etc wont fit...

what people do is modify the 1800 sump by cutting and welding the deep part of the 1600 sump on to it. (you have to mod the pick up pipe then)


stick to the 1600 and see if you can pick up a reasonable modded one with ported head - should give much better results.