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Originally Posted by Joshinator99
Only the Victor Jr ones I believe. Thought the Performer RPM ones used stock headers.
I’m enjoying my Mast Black Label heads FWIW. Nice product. Support is a little on the slow side unfortunately, but to be fair I haven’t needed any since I bought them.
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Did your Mast heads come bare or fully setup with valves, springs etc? I also saw that they offer their own factory casting CNC'd ported heads. They don't mention anything about the issues that TSP warns about on their CNC'd ported factory casting head description. I would imagine these would have the same issues if running a high lift cam.
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Camaro 1SS M6 - LT2 IM, 1-7/8" Speed Engineering Headers & catless 3" x-pipe to Borla ATAK NPP axle back, Mishimoto Catch Can, BTR Rocker Arm Trunnion kit, E85, 95MM TB, JLT CAI, 180* T-Stat, & SJM line lock - Tuned by Ted Jannetty
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