- GLM Marine aftermarket Mercruiser manifolds for use with models: 198 / 228 / 898 / 225 / 255 / 270 GM engines.
- V8 GM small block, fully tuned design will guide exhaust gases directly to elbow without turbulence and back pressure
in the meantime, additional 40% water cooling area will decrease the entire manifold body temperature significantly.
tuned design will reduce turbulence and enhance flow for higher and maximum engine power.
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