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#5
03-14-2026, 06:40 PM
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Here is my Evac tube setup. Definitely made a difference on reducing crankcase pressure after they were installed correctly.
It is very important to have the correct angle and depth of the tube in the header. As far as I recall Moroso recommends a 30 degree angle and the tube cutout which creates the vacuum should be at a 1/4" depth.
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1965 GTO Cameo White, Red Interior - 389, ST300 numbers matching 1965 GTO Black, Black Interior "Post" car - 389, M-20 numbers matching 1965 GTO Silver, Black Interior 100% dedicated drag car w/1968 400(461), 16x Heads, TH400, 3.90 9" Rear 1.656 60' 7.566 90.057 (1/8th) 1971 GTO Black (orig. Quezal Gold), Gold Interior - 400, TH400 numbers matching 1972 GTO Cardinal Red, Black Interior - 455, TH400 almost numbers matching |
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