GMC 1989 Light Duty Truck Repair Manual page 387

37. W a sh er
38. B o lt
42. S tud
43. In ta ke M a n ifo ld
44. G a sket
Tightening Sequence
T ig h te n b o lts in n u m b e r s e q u e n c e as sh ow n.
Or, " A" g ro u p b o lts can be tig h te n e d firs t,
th en " B " g ro up b olts.
Torque Specifications
" A" G ro u p B o lts: 50 N-m (36 Ft. Lbs.)
" B " G ro u p B o lts: 43 N-m (32 Ft. Lbs.)
Figure 59— Intake Manifold Installation
Figure 6 0 — Exhaust M anifold Installation
2.5 LITER L4 ENGINE 6A1-31
F-01984
B-07994