What should the total timing be on a TBI?

Adjust the timing light to find the total timing. It should be between 32-36 degrees for premium gas… 30-32ish for regular. If you’re above 36 degrees, go back and reset your inital timing back a few degrees.. if it’s below 32, bump it up a hair and try it again.

What’s the best timing for a 4 stroke engine?

Perhaps you don’t understand how timing works in a 4 stroke engine. Any small block chevy, TBI, carb, or TPI… they all like to run around 36 degrees of total timing advance to run optimally. Perhaps you don’t understand how timing works in a 4 stroke engine.

Is there a vacuum on a TBI carb?

There is NO vacuum ANYTHING on the dizzy. You’re fortunate this isn’t the Toy forum…:flipoff2: Any small block chevy, TBI, carb, or TPI… they all like to run around 36 degrees of total timing advance to run optimally. Perhaps you don’t understand how timing works in a 4 stroke engine.

Why does my TBI 350 have zero power?

This weekend I put a new idle air control valve and o2 sensor in, and the symptoms still persist. Along with the erratic idle, the engine has absolutely zero power. It stumbles as if it’s missing a couple of cylinders when you accelerate.

Is there a way to set TBI timing?

The only timing the end-user sets is to establish the reference timing, in this case it’s 0* with the ESC wire disco’d on GM TBI engines. There is NOTHING else to set, no other procedures to follow. The ESC takes care of that. Your post has NOTHING to do with ANY GM TBI system and only serves to confuse/muddy up this post.

Can a GM Vortec 4.3L be used for TBI?

GM ran out of valve covers in 1993 and put vortec 4.3L valve covers on both engines. CAMS are expensive and on a TBI 4.3L is only going to gain you about 15hp from 3000-5500 and lose that much below 2500 rpms. So START with a vortec 4.3L and run TBI on it.

What are the specs for a TBI engine?

The cam in the TBI engine is just plain AWFUL. Specs on Stock TBI cam is .050″ tappet lift (intake/exhaust) is 179/194; and maximum lift with 1.5:1 rocker ratio (intake/exhaust) is .350/.384.

How to troubleshoot your TBI fuel injection system?

Troubleshooting your TBI Fuel Injection System Most of the problems encountered while installing your fuel injection system or after a time of operation are very simple. If your check engine light is on you more than likely have a hard fault meaning something is grounded out, unplugged, operating out of range or has gone bad. See