ProForm Harmonic Balancer Cover, Timing Marks, Bowtie Logo, Aluminum, Black, 8 in Balancers, Small Block Chevy, Each

I installed it on a zz4 sbc 350 in my 88 chevy truck you have to pull the center harmonic balancer bolt as well as the 3 pulley bolts. tdc mark on cover lined up perfect with the original balancer mark. It also has 90 degree marks to adjust my roller rockers using the 90 degree method. No unwanted contact with timing cover or water pump not even close. very nice piece. pointer does not cover the timing degree marks as some say. Get the black one marks are easy to see.

I did not like the fact that this item was not in new condition. This item is in poor condition. Will be returning. Thanks for wasting my time

The hole in the center was to small for my factory crank pulley flange to fit through it. I have a 454 gen v big block. I enlarged the hole carefully and it worked out fine.

Fit good easy-to-use

98 vortec fit my balancer 8 inch will be buy another for my other motor

The outside diameter of the cover and my harmonic balancer were about the same. Didn’t fit, so I will be using tape instead.Looks really good though.

Looks great

Bought it for my k10 project. It is of a good quality and the timing marks seem to be accurate. Allowed me to dial my timing in to be perfect.