- GLM Marine aftermarket manifolds for use with models: 198 and 898 GM marine engines years 1977 to 1985.
- In 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 body temperature significantly.
- The tuned design will reduce turbulence
and enhance flow for higher and maximum marine engine power.