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Is that a KB aluminum hemi block and if so, what do you do for the big gap where the step is in the valley area? My Indy valley cover doesn't work.



I had that gap with my B1's and the Indy valley plate too. I just filled it with silicone, and smoothed it out, let it dry overnight, and it worked fine. It pulled 12" of vacuum that way.




Not that small gap, With a Hemi KB block there is a huge step opening that won't allow the intake valley pan to cover completely to the head area.



Is it more than a 1/8-1/4 inch? That's what I had.