At Fixya.com, our trusted experts are meticulously vetted and possess extensive experience in their respective fields. Backed by a community of knowledgeable professionals, our platform ensures that the solutions provided are thoroughly researched and validated.
Re: 1983 gmc jimmy 350 engine. no sticker in engine...
12 degrees was common for those engines at 650 rpms, but make sure that the engine is warm and disconnect the vaccum advance, which will probably require plugging the vaccum port at the carb.
- If you need clarification, ask it in the comment box above.
- Better answers use proper spelling and grammar.
- Provide details, support with references or personal experience.
Tell us some more! Your answer needs to include more details to help people.You can't post answers that contain an email address.Please enter a valid email address.The email address entered is already associated to an account.Login to postPlease use English characters only.
Tip: The max point reward for answering a question is 15.
Idle speed 900 RPM
Fast Idle 1500 RPM
Timing (I prefer ) 6 DEG BTDC (book) 4 Deg BTDC
Spark Plug gap 35
Points Gap. I switched to Elect Ing so got to go get the book ok 0.019
Dwell 28 to 32 Deg
alot of GM motors have the fan set on a clutch and run all the time..i Know I had a 305 = 5.0 v8 350 = 5.7l 4300 4.3L these are all the same and the fans run all the time.
That would be the silver canister looking device on the passenger side of the engine compartment near the blower and HVAC housing. It will have two large diameter a/c lines attached to it as well as the low pressure sensor. If it's the original one it will have the a/c refrigerant capacity sticker on top of it. Many times it is covered in black foam to help insulate it.
1987 non-turbo: 10 deg Before Top Dead Center (BTDC) @700 rpm 1987 Turbo: 10 deg BTDC @650 rpm.
To set the timing, you will need to connect a jumper wire between terminals E1 and TE1 on the diagnostic terminal. This diagnostic terminal is located just aft of the engine compartment fuse box. It is a black plastic box marked "diagnostic" on the cover, which flips open to reveal the terminals inside. There is a diagram on the inside of the cover which explains the terminal positions. On the Turbo model, you need to remove the forward section of the engine cover to gain access to the number one spark plug wire.
×