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I would NEVER reuse (or even use for that matter) the GM ones, the felpro's would be okay to reuse, but if you did, I'd definitely add a little RTV.
ive only ever reused the fancy metal/silicone Fel-Pros, Never would consider reuseing the other types.
that should work fine, be liberal with the RTV on the valleys
i little more wont hurt, also, the Vortec Intakes only need like 15 Ft/Lbs, but come back in 2 weeks and torque down the bolts again.I was thinking the valley needs 1/8 inch bead sounds like it needs more! Again thanks!
Remember the way to get RTV to seal is to let it cure before you squish it all over. I've seen 2 motors now seized because my buddies thought that you just squeezed it on and torqued them down, pushing RTV into the motor and clogging up coolant and oil passages.