I need firing order for 1987 s10 blazer 2.8 2wd

Fig. Fig. 1: 1.9L engine . Firing order: 1-3-4-2 . Distributor rotation: counterclockwise



Fig. Fig. 2: 2.0L engine . Firing order: 1-3-4-2 . Distributor rotation: clockwise



Fig. Fig. 3: 2.5L engine . Firing order: 1-3-4-2 . Distributor rotation: clockwise

The firing order is driver side is 1,3,5 / passenger side firing order is 2,4,6 on the distributor cap after you have installed the rotor and the new cap the order is like a clock 1 goes at the bottom to the left if your in front of the engine it goes 1,2,3,4,5,6 and the lone wire goes in the middle just make sure you follow your wires to the right plug to make sure the firing order is correct or it won't fire.

1987 Chevrolet Camaro 2.8 liter V-6





1987 Chevrolet Beretta 2.8 liter V-6 VIN "W"






1987 Chevrolet S10/T10 Blazer 2WD 2.8 liter V-6 VIN "R"





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from the front of the engine looking backwards towards the gearbox
FRONT
R2..L1
R4..L3
R6..L5
GEARBOX

FIRING ORDERS NOTE: To avoid confusion, remove and tag the spark plug wires one at a time, for replacement. If a distributor is not keyed for installation with only one orientation, it could have been removed previously and rewired. The resultant wiring would hold the correct firing order, but could change the relative placement of the plug towers in relation to the engine. For this reason it is imperative that you label all wires before disconnecting any of them. Also, before removal, compare the current wiring with the accompanying illustrations. If the current wiring does not match, make notes in your book to reflect how your engine is wired. Fig. 1: 1.9L engine Firing order: 1–3–4–2 Distributor rotation: counterclockwise
Fig. 2: 2.0L engine Firing order: 1–3–4–2 Distributor rotation: clockwise
Fig. 3: 2.5L engine Firing order: 1–3–4–2 Distributor rotation: clockwise
Fig. 4: 2.8L engine Firing order: 1–2–3–4–5–6 Distributor rotation: clockwise
Fig. 5: 4.3L engine Firing order: 1–6–5–4–3–2 Distributor rotation: clockwise

You fail to mention if it is a full size Blazer or S10 Blazer. Here are both wiring diagrams.

For the 1987 Chevrolet Blazer 350 (5.7L):

Firing Order:
1-8-4-3-6-5-7-2

Cylinders:
.......(back)........
|..8..............7..|
|..6..............5..|
|..4..............3..|
|..2..............1..|
........(front)

Distributor Connections:
.....(back)
.....6.....5
3...............7
4...............2
.....8.....1
.....(front)
Rotation:
Clockwise

Let me know if this helped, or if you have additional information or questions. Feel Free to contact me at FixYa.com!

For the 1991 Chevrolet S10 Blazer 4.3 V6, Both: 2WD AND 4WD:

Firing Order:
1-6-5-4-3-2

Cylinders:
.......(back).......
|..6..|.......|..5..|
|..4..|.......|..3..|
|..2..|.......|..1..|
......(front)

Distributor:
....(back)
(+).4...3
5...........2
..6...1..(+)-screw
.....(front)

Let me know if this helped, or if you have additional information or questions. Feel Free to contact me at FixYa.com!

991 Chevy S10 firing order
The firing order for a Chevy s10 depends on which engine you have.
1.9L engine the firing order is: 1-3-4-2 . Distributor rotates counterclockwise.
2.0L engine the firing order is: 1-3-4-2 . Distributor rotates clockwise.
2.5L engine the firing order is: 1-3-4-2 . Distributor rotates clockwise.
2.8L engine the firing order is: 1-2-3-4-5-6 . Distributor rotates clockwise.
4.3L engine the firing order is: 1-6-5-4-3-2 . Distributor rotates clockwise.

The firing order for a Chevy s10 depends on which engine you have. 1.9L engine the firing order is: 1-3-4-2 . Distributor rotates counterclockwise. 2.0L engine the firing order is: 1-3-4-2 . Distributor rotates clockwise. 2.5L engine the firing order is: 1-3-4-2 . Distributor rotates clockwise. 2.8L engine the firing order is: 1-2-3-4-5-6 . Distributor rotates clockwise. 4.3L engine the firing order is: 1-6-5-4-3-2 . Distributor rotates clockwise.