i have a 93 4.3 tbi..i set mine at 13deg. works well on 89 octane. 12deg for 87octane at 700rpm
The timing should be set at 0 degrees.
0 degrees
How do you set the timing for an 1989 Chevrolet G20 van - 350 cu. in. with tbi?
"0" or top dead center. I have a 1994 gmc picckup same thing
all Chevy tbi's are to be set at 0 degrees
if it is tbi you have to unplug the est, it is a single wire (tan/blk stripe) get a timing light and set the base timing at 0 degrees,then shut off the engine plug the est back in . unhook the neg batt terminal for 30 seconds to a minute , that will clear the codes, then put it back on and crank the engine , the timing should be set.
Hi, The answer for your question would be, the timing will set based on crank angle position only as it is done in 4 stroke engine. It differs for a TBI based engine and GDI based engine.
Bring it to a shop and have them adjust the timing with a timing gun I believe its 6*
Adjust your timing
0 degrees
You have to unplug the distributor advance wire, it's a tan or brown colored wire, set to 0 (or up to about 8 advance) then reconnect the wire.
Knowing the year would really help. But 90% of the 350 TBI engine timing was 0 TDC.