GM Firebird 1967-1981 Repair Guide

Exhaust Manifold

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REMOVAL & INSTALLATION 230 and 250 Engines



Exhaust manifold removal for these model years is covered in the Intake Manifold Removal and Installation procedure earlier in this section.

1975-76 Models See Figure 1

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Fig. Fig. 1: Tighten the exhaust manifold bolts in the sequence shown 1975-76 6-cylinder engines

  1. Remove the air cleaner.
  2.  
  3. Remove the power steering and air pump brackets.
  4.  
  5. Remove the EFE valve bracket.
  6.  
  7. Disconnect the throttle linkage and return spring.
  8.  
  9. Unbolt the exhaust pipe from the flange.
  10.  
  11. Unbolt and remove the manifold.
  12.  
  13. Reverse the procedure for installation. Tighten the four end-bolts to specifications last.
  14.  

231, 265, 301, 305, 326, 350, 400, 403 and 455 Engines

1967-74 Models

See Figures 2 through 7

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Fig. Fig. 2: Typical exhaust manifold mounting on 8-cylinder engines



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Fig. Fig. 3: To remove the exhaust manifold, first bend back the bolt retainers ...