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improved throttle response and better fuel economy
1974-1979 Plymouth Trailduster
The pressure on the head from the earmuffs can be adjusted by changing the special foam rubber pads (supplied) positioned between the earmuff and the helmet
The reason for spread port heads is to achieve additional cooling in the center of the head where the heat concentration is greatest
AFR LS3/LS99 Mongoose CNC Cylinder Heads 260cc Assembled 600090147 improved throttle response and betterProduct Description: Cylinder Head LS3 Mongoose Assembled 2. 165 1. 600 in Valves 260 cc Intake 69 cc Chamber 1. 270 in Springs Aluminum GM LS Series Pair Advanced FLOW engineering (aFe Power) is a premier designer and manufacturer of automotive performance upgrade systems and components. Current product lines include cold air intake systems, high performance direct fit and racing air filters, exhaust systems, intercoolers, turbochargers, electronic