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4.3 torgue spec head bolts


gatliffe
08-25-2005, 11:39 AM
I replacing the head on a 91 4.3 I have 2 books one say to torque the head to 65 the other say 92 what the right one?

dmbrisket 51
08-25-2005, 01:33 PM
65 is what my 350 took, so i would say that sounds about right... but you need to know the tightening steps (number of times you need to tighten to get to 65) and torque order

jsgold
08-26-2005, 11:00 AM
The GM service manual says 65ft lbs on my 93 4.3, but to do it it three steps, and in a certain sequence. First, 25 ft lbs, 2nd 34 ft lbs and then 65 ft lbs. I do not have a scanner, so here is the best i can do.

front of engine 8 5 9
12 4 1 13

11 7 3 2 6 10

gatliffe
08-26-2005, 11:16 AM
Thanks I got it now

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