Thanks gents. Just yep mate I know but when the plenum and sump are off it should be easy to tell how much build up there is?
I won't use my cam...is lower lift than the 4.6 I just realised...it is a torque tow cam and the extra cubes will give the torque I need...so I don't want to quell the upper range power of the bigger motor.
Cheers
