Firing order for a 455 v8 engine in a 1976 buick riviera

1. Connect the distributor's B+ (battery) terminal to a switched 12-volt source, such as the ignition switch.

2. Connect the distributor's tach terminal to the tachometer signal wire, if you have a tachometer.

3. Connect the distributor's ground wire to a good engine ground.

4. Connect the distributor's #1 spark plug wire to the #1 spark plug on the engine. The #1 spark plug is usually located on the driver's side front cylinder.

5. Connect the remaining spark plug wires in firing order sequence to the distributor cap terminals. The firing order for a Buick 455 engine is 1-8-4-3-6-5-7-2.

6. Install the distributor cap and rotor.

Is that for a 3.8L V6 or 4.0L V8? Here's both

The one down below is the 4.0L
Hope this helps

Your wish is my command. here is '74 Riviera 455

Buick 455 cu in (7.5 L) V8
Firing Order for a 1970-76 455 should be 1-8-4-3-6-5-7-2



Hope this help.

1985 Oldsmobile Cutlass Salon 3.8 liter V-6



Hope this helps.

You didn't post your engine size so please pick the correct one:



3.8L (VIN B and 3) Engines Firing Order: 1-6-5-4-3-2 Distributorless Ignition System



3.8L (VIN C, 1, L and K) Engines Firing Order: 1-6-5-4-3-2 Distributorless Ignition System



Buick-built 231, 252 V6Engine firing order: 1-6-5-4-3-2Distributor rotation: Clockwise



Olds-built 260, 307, 350, 400, 403, 455 V8Pontiac-built 265, 301, 350, 400, 455 V8Engine Firing Order: 1-8-4-3-6-5-7-2Distributor rotation: Counter-clockwise



Buick-built 350 V8Firing order: 1-8-4-3-6-5-7-2Distributor rotation: Clockwise



Chevrolet-built 267, 305, 350 V8Firing Order: 1-8-4-3-6-5-7-2Distributor rotation: clockwise



Chevrolet-built 262Firing order: 1-6-5-4-3-2Distributor rotation: clockwise

You didn't post your engine size so please use the appropriate diagram:




GM (Cadillac) 250 (4.1L) V8 .GM (Cadillac) 273 (4.5L) V8 .GM (Oldsmobile) 307 (5.0L) V8 .GM (Oldsmobile) 350 (5.7L) V8 w/EFI.Engine firing order: 1-8-4-3-6-5-7-2 .Distributor rotation: counterclockwise





GM (Buick) 252 (4.1L) V6 .Engine firing order: 1-6-5-4-3-2.Distributor rotation: clockwise





GM (Cadillac) 368, 425, 472, 500 V8.Engine firing order: 1-5-6-3-4-2-7-8.Distributor rotation: clockwise





GM (Cadillac) 429 V8.Engine firing order: 1-8-7-2-6-5-4-3.Distributor rotation: clockwise

For several engines....



Fig. 1: Buick-built 231, 252 V6 Engine firing order: 1-6-5-4-3-2 Distributor rotation: Clockwise




Fig. 2: Olds-built 260, 307, 350, 400, 403, 455 Pontiac-built 265, 301, 350, 400, 455 V8 Engine Firing Order: 1-8-4-3-6-5-7-2 Distributor rotation: Counter-clockwise




Fig. 3: Buick-built 350 V8 Firing order: 1-8-4-3-6-5-7-2 Distributor rotation: Clockwise




Fig. 4: Chevrolet-built 267, 305, 350 Firing Order: 1-8-4-3-6-5-7-2 Distributor rotation: clockwise




Fig. 5: Chevrolet-built 262 Firing order: 1-6-5-4-3-2 Distributor rotation: clockwise


Hope helped with this (remember rated this help) Good luck.