Most people set the timing at idle speed. Around 700-800 rpm. If you have an advance timing light, you can set it for total timing, which is all in by 2800-3000 rpm.
It can be from 180 h.p. (Base Engine) to 375 h.p. (Corvette) depending on which 1991 5.7 liter engine you are talking about. You did not specify which 350, so you get no definitive answer.
There should be a sticker on the radiator shroud that gives timing and spark gap values. All the Chevys I've done say 0 degrees btdc. Warm up the engine. Turn it off and unplug timing wire. On later models, the connector is located near the distributor (except for 1995 models; on these, it's located under the dash, below the glove box). Tan wire with a black stripe. Set timing to 0. Turn engine off. Plug timing wire back together. Reset ECM. ECM will recalibrate after driving a while.
The timing should be set at 0 degrees.
On mine there are a series of notches cut into the edge of the main pulley nearest to the engine block. The notches are not deep and can be filled by dirt and paint and so can be hard to see.
in the fuel tank.
engine 57
no such engine. is it a light duty f250 which looks like a f150 or old body style? THE ENGINE COULD BE A 7.5LITRE [460 C.U.] DRIVERS SIDE BELOW HOOD HINGE YOU WILL FIND A DUMMY PLUG WITH TWO WIRES COMING IN NONE GOING OUT,REMOVE PLUG INSTALL TIMING LIGHT,ADJUST DISTRIBUTOR ,REPLACE PLUG.....DONE
drop the gas tank remove the float/pump assy. and the pump is the silver cylinder had one replaced by a dealer expensive
57 decibels is about the noise that a high speed toothbrush makes or the low setting on an alarm clock or telephone. It can be loud enough to wake you up.
3.5 cu. in. (57 cc)
NO. You must stay under the year of 99 and it must be a 4L60E transmission.
If it was painted at all probably Chevy orange engine paint