Review on ARP 4007503 Stainless 12 Point Valve by Matt Woodward

It took 12 bolts to finish my 351 Cleveland intake manifold. Just four will do. Four others were 1/4 inch too long and didn't tighten. The kit only included 3/8" bolts, but also required four 5/16" bolts for the inner four. The kit also included two screws that were too long to use. I have no idea what they could be for. I had to go to my local Ace hardware store to get the correct grade 8 screws to complete the installation. It was useless to use four screws that actually fit as they are stainless steel and use a different size 12 point head to tighten them. All bolts purchased from Ace were the same color and head size. So lost money!