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.
If this is a stock engine try anywhere from 4 to 8 degrees advanced.
It can be anywhere from 4 - 13 degrees.. depending on what type of cam you got and ect.. For a stock 350.. Timing is commonly around 12 - 13 degrees.
stock timing on a 400 small block Chevy 2/4 bbl engine is 4 degrees btdc. depending on how the engine is built however, i.e. rebuilt to stock or built for performance, the timing may be up to 8 degrees plus or minus tdc or more depending on valve timing and cam timing.
6 degrees for the stock engine, or 8 degrees for California emissions, or 12 degrees if it came with the high performance engine. Standard or automatic transmission is the same.
6 to 8 degrees before top dead center. STOCK ENGINE
8 degrees btdc,thats pretty much all stock v8 are
6-10 degrees
appx. 195hp
The timing should be set at 12 degrees before top dead center. If this is a Canadian heavy duty engine, it should be set at 2 degrees after top dead center.
stock base timing is 8 degrees before TDC
10 degrees . its stock for most engines . most people who run the inline 6 will run 12 degrees and some up to 14 but its not recommended
Remove the vacuum hose at the distributor and plug it temporarily. Attach timing light and turn distributor as needed to set to factory specs or 8 degrees BTDC. Reattach vacuum line.