350 TBI Firing Order 【With Diagram】

It is classified as a “small-block” because of its size in comparison to the Chevrolet big-block engines, which are physically considerably bigger. The LT engines of Gen 1 and Gen 2 are distinguishable from the LS-based small-block engines that came after them. The powertrain of the Gen 2 is an upgraded version of the powertrain of the Gen 1, with numerous components and dimensions that are interchangeable with one another.

The only things that later generations of engines have in common with the first and second generations are the rod valves, the transmission-to-block screw pattern, and the bore spacing. The 1991 Chevy and 1987 Chevy TBI firing orders are the same 1-8-4-3-6-5-7-2.

350 TBI Firing Order

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

Explanation of 350 TBI Firing Order

The Chevrolet 350 belongs to the family of tiny powertrains that Chevy manufactures and is known as the 350. They are referred to as “small-block” / SBC engines because their displacement is lower than that of big-block cargo engines. How to set the firing order on Chevy 350? The  350 chevy engine firing order is 1-8-4-3-6-5-7-2.

This indicates that cylinder 1 will fire first, then cylinder 8 will fire, then cylinder 4 will fire until all of the cylinders have fired in the specified sequence. Is 350 tbi hard to start when hot? When rolled out from the plant, cylinders are often sorted in a certain fashion so that it is simple for technicians and vehicle owners to recognize them. When it comes to the Chevy 350, its cylinders are often organized in a manner that moves across the front of the car engine to the rear, beginning on the side closest to the driver.

This identifies the cylinder that is located to the left of the engine as being cylinder 1, which is the first cylinder. From that point on, the numbers go from left to right, with each of the cylinders that have odd numbers located on the left side of the vehicle and all of the cylinders that have even numbers located on the right side of the engine.

Firing Order Applies to:

  • 262 Chevy
  • 267 Chevy
  • 265 Chevy
  • 283 Chevy
  • 302 Chevy
  • 305 Chevy
  • 307 Chevy
  • 327 Chevy
  • 350 Chevy (5.7 vortec)
  • 400 Chevy

Torque Specifications

Fastener TypeTorque Spec
7/16 in. Outer Main Cap Bolt65 ft.-lbs.
7/16 in. Inner Main Cap Bolt70 ft.-lbs.
3/8 in. Outer Main Cap Bolt40 ft.-lbs.
11/32 in. Connecting Rod Bolt38-44 ft.-lbs.
3/8 in. Connecting Rod Bolt40-45 ft,-lbs.

Firing Order For Similar Vehicles:

  • Chrysler V8 (small blocks)  1-8-4-3-6-5-7-2
  • Chrysler 5.7L Hemi V8  1-8-4-3-6-5-7-2
  • Hudson V81955-57  1-8-4-3-6-5-7-2
  • Pontiac 307 (Chevrolet engine)  1-8-4-3-6-5-7-2
  • Packard V8 (all)  1-8-4-3-6-5-7-2

Where is number one on a Chevy 350 distributor?

How to build a 350 TBI? The first cylinder is located in the front left of the vehicle. If the distributor was appropriately placed, position one corresponds to the front of the driver’s side.

Create a circle, then draw a line across the center of it. You need to position it so that it is perpendicular to the engine and as far forward as possible on the driver’s side. 350 tbi tps symptoms, if your tps is failing, it may allow your engine to start, operate for a short while, and then stop running altogether.

What is the difference between a 350 TBI and a 350 vortec?

In the TBI, the plugs were located directly ahead of the throttle plate, while in the Vortec, the plugs were located behind the throttle plate. Additionally, the TBI was indeed a pace concentration system, while the Vortec has been using a mass wind flow mechanism to handle the fuel system.

Jake Mayock