TA’s Stage 4 Tall Port series heads the intake pushrod has been moved in order to widen the intake runner. Though the CFM is similar to our Stage 3 heads, the wider runner does a better job at complimenting increased intake volumes as found with Nitrous, Alcohol or Forced Induction combinations.

Intake Manifold: SP2, Custom
Exhaust Manifold/Headers: Oval Port Headers
Rocker Assembly: Stage 4 Roller, TA Shaft Mount
Head Bolt/Stud Kit: Stage 2
Camshaft: Roller
Power Potential: 700-900+
Valves Int./Exh: 2.250 / 1.800*
CFM (base) Int./Exh: 325 / 230 @ .550” Lift
CFM (max) Int./Exh: 395 / 270 (Fully ported, 2.300" Int Valve)
Chamber CC’s: 58

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