It's a 1984 Chevrolet Custom Deluxe truck, but the engine and trans are not the original.
Hi, glad to be of help.
69-79 only used 4.
number 5 is for lockup on later models
number 2 needs to be in there.no matter what.
number 3,4,1 dont need to be there they to cushion the 1-2 and 2-3 shifts. If left out it will give you harder shifts
See these forum links:
TH350 check balls