Proflow Intake Manifold, Max Jr, Single Plane, Aluminium, Black, Square Bore, SB Pumps They also feature precision-rolled threads

They also feature precision-rolled threads

100 bore and

style flexplate just won't cut it and a stronger option is a necessity to prevent transmission and/or converter failure

Some modifications may be required for fitment

Holden 253 4148cc V8

Proflow Intake Manifold, Max Jr, Single Plane, Aluminium, Black, Square Bore, SB Pumps They also feature precision-rolled threadsPart Number : PFEM2981 BK Proflows single plane Max Jr intake manifolds are very versatile and can be used for both drag racing and street applications. This manifold design features extended tapered runners and smaller plenum chambers tuned for maximum performance between 3000 to 7500 RPM. They have provision for nitrous bosses to be tapped and are available in natural and black powder coated cast aluminium finishes.