Timing chain "jumped"? 1 or 2 teeth?
4 BTC what is the timing on a 1996 chev 350 marine 275 hp
It is 0 degrees at top dead center ( TDC ) With engine warm.
between 8/4 degas btdc
Should be top dead center unless u are running aftermarket mods
looking at the timing marks from the top left to right you have 5 degrees after top dead center, then top dead center then 5 degres 10, 15 then 20 befor top dead center. the timing is 7 degrees before top dead center
There are two timing marks on a 350 chev one for the cam shaft gear and one for the crank gear. The timing mark on the crank or the on on the bottom of the motor should be facing straight up and the cam shaft gear should be facing straight down this will put you lined up and top dead center.
Top Dead Center
It is look like ruler with 0, 10, 20 number XXXXXXXXXXXXXXXXXXXXXXXXXXXXX The timing scale will have an "A" at the top and a "B" on the bottom. In the center is a "0". The "A" is for after top dead center. The "B" is for before top dead center. Each mark on the scale is 2 degrees. Timing is always set on before top dead center.
Your timing is to far before top dead center you need to advance it turn the distributer foreward.
When timing the timing belt you use the mark for top dead center on the crank. To do that you will have to do a few different steps.
If you want to know the timing specs then here it is 4 degrees before top dead center / BTDC. Top dead center is zero on the timing bracket / Tab.BTDC. are the marks on the left side of the zero on the tab.ATDC / After top dead center are the marks on the right side of the timing tab.Hope this answered your question. If not please ask it again.
Zero, tdc / top dead center