Where To Find Plug Wire Diagram Or Just Help On Plug Wires For 83 Chevy Scottsdale 350 Small Block

Posted in Internal Engine Parts | Asked on Jun 28, 2010

Can some one please help me? I’m trying to figure out the firing order or maybe I mean the schematic for my spark plug wires on an 83 Chevy Scottsdale 350 small block 4 wheel drive truck. While my husband was changing them I believe he accidentally got probably 2 of the wires confused. ( This is why beer and auto repair doesn’t mix, lol. ) He said after he changed the plugs he then began changing the wires and did them one at a time but after completing the job the truck is now back firing like crazy. I asked him if he might have gotten some confused and he said, I guess it could be possible, but I don’t see how since I did them one at a time. My other thought was maybe the gap on the plugs could be off. Anywo, he got pissed and says he’s going to take it to the mechanic and I said, why?? I told him I could find a diagram for the plug wire schematic on-line and he isn’t convinced I can find this. He won’t go near the computer, lol. I know the answer is here somewhere, lol. Now I’m on a mission to find and do this myself. Seriously this is a mission! Please help my be hailed as a genius. lol Come on I know this isn’t rocket science and the fix here is simple. And I do know a few things about cars and I love working on them and trying to understand them.

If I’m standing in front of the truck facing the engine and the firewall. Since there are 4 plug wires on the left and 4 plug wires on the right of the engine, can someone tell me what each plug number is from back to front, starting left to right while facing the firewall? I have done some searching and I keep seeing the firing order, if I’m looking right that is at, 1,8,4,3,6,5,7,2.

So would that mean while facing the firewall my first plug numbers on the left side (passenger side) starting closest to the back and working forward is 1,8,4,and then 3 would be closest to front of engine on the left side, then over to the driver side from the first plug closest to the firewall 6, then 5, then 7, and 2 would be at the closest to the front of the engine? Yes this is a guess on my part.

Ok now to the distributor cap, 8 wires and one for the coil wire, right. How do I figure this thing out to see if maybe one of the wires got put on there wrong? Can someone tell me what what number plug wire goes to what point on the distibutor cap? Working clockwise…. If you can be specific with the starting point.

I was hoping to find a picture diagram of the wiring schematic on-line somewhere but so far I’ve had no luck. Maybe someone can tell me where to find this??? Help please….. Like I said, I’m on a mission now, lol.
Thank you guys soooo much. Your Great!!! Ok now I get it. I had the concept all wrong. Guess that’s why I asked the question, lol. But now I understand! Well ok I haven’t gone out and done it yet but I’m on my way….

LOL Mickey, that’s Boxer as in Boxer dog. Because he’s the best thing since sliced bread and apple pie. ; ) Ya don’t get any better dog than a Boxer! So that’s Luv My Boxer. :)
Ok let’s see if this works, lol. Is this right?

[IMG]http://i30.photobucket.com/albums/c339/Gunny819/Distributor_1.jpg[/IMG]

There are 8 Answers for "Where To Find Plug Wire Diagram Or Just Help On Plug Wires For 83 Chevy Scottsdale 350 Small Block"

  1. McGuyver says:

    driver’s side, front to back, are 1,3,5,7, passenger side, front to back are 2,4,6,8. firing order is 18436572 clockwise on the distributor. hope this helps

  2. Wicked Mickey says:

    The firing order, which should be cast into the intake manifold, for the chevy small block V8 is 1-8-4-3-6-5-7-2. The firing order is the numerical sequence in which the spark plugs are fired. The insertion position of each spark plug wire around the circumference of the distributor cap can be found according to a clock face. The insertion sequence determines the firing order. The firing order is followed clockwise around the distributor cap starting from the 6:30 position with the 6:30 position being the number one cylinder spark plug wire.

    On classic chevy small block engines that use ignition breaker points instead of electronic ignitions, the number one cylinder is the one immediately clockwise of the small metal sash cover on the distributor cap. The firing order starts here. There is no sash cover on the distributor cap for GM HEI electronic ignitions, and the firing order is the same, but starting at the 5:30 position.

    The firing order makes sense if you know how the cylinders are numbered. The number one cylinder is the front most on the drivers side and 2 being the front most on the passenger side. From front to back, the cylinders are odd numbered on the drivers side, and even numbered on the passenger side.

    The firing order starts with the number one cylinder. We would connect the number one spark plug wire to the distributor cap terminal in the 6:30 position. Since the next cylinder in the firing order is 8 (passenger side rear), we connect the number 8 spark plug wire to the next distributor cap terminal (approximately 7:30 position) in the clockwise direction from number one. You need to be sure you continue the firing order in the clockwise direction around the chevy small block distributor cap from the last installed spark plug wire. Setting the rest of the firing order is just a matter of repetition. Be sure to count the spark plugs from front to back on each side of the motor to identify the correct cylinder number in the firing order.

    The rest of the firing order wiring process is a matter of tracing out the spark plug wires and connecting them to the correct terminal. If you find it difficult to trace the spark plug wires you can use a little bit of tugging back and forth on each end of the spark plug wire. Simply pull the spark plug wire off the spark plug for the cylinder number you are working with, and while looking down the side of the motor, tug or jiggle the wire using quick short tugs without pulling it taught. Find the other end of the spark plug wire near the distributor, using the other hand, and you can then tug back and forth to be sure you have the right one. Don’t pull them tight though. This exercise can be a little challenging since the front 2 spark plug wires on each side should be routed between the small block chevy motor mounts and the engine block and then through some spark plug wire clips at the bottom of the engine block, but at the top of the oil pan, then around the back of the cylinder heads and up to the chevy small block distributor cap. They won’t be in your immediate view.

    As a general rule, as I said earlier, follow a clockwise direction around the distributor cap when setting the firing order. This is much easier than following the cylinders along each side of the chevy small block motor, and trying to skip terminals on the distributor cap while locating the correct distributor cap terminal. It can get too confusing. If you get it wrong, you will likely have to pull them all out and start over to correct the firing order.

    Being systematic about it and following the 1-8-4-3-6-5-7-2 firing order around the distributor cap is the best way to be sure you complete the job correctly.

    BTW, why do you love your box, other than the obvious?

  3. kelly_f_1999 says:

    type firing order diagram chevy an dif yuor wanting to replace them just do one wire at a time and most of time left front wil be one but

  4. Zach P says:

    http://www.autozone.com/autozone/repairinfo/repairguide/repairGuideContent.jsp?chapterTitle=Firing+Orders&partName=Engine+Electrical&pageId=0900c1528004c1e4&partId=0900c1528004c18a ^(http://www.carparts21.com/goto/http://www.autozone.com/autozone/repairinfo/repairguide/repairGuideContent.jsp?chapterTitle=Firing+Orders&partName=Engine+Electrical&pageId=0900c1528004c1e4&partId=0900c1528004c18a)

  5. Jeffrey B says:

    driver side cylinders are 1=3=5=7 pass side 2=4=6=8

    the rotation on the dist cap is the firing order you are looking for 18436572 The cap probably has the no 1 already marked on it You can bump the motor over to check the rotation Good luck and have a beer on me

  6. Michael B says:

    With verryyy few exceptions, all Chevy V8′s have used 18436572 as the firing order…number 1 cylinder is the front drivers side plug, and on the drivers side of the engine it is 1357, passenger side 2468…depending on how the distributor was originally installed, number one plug wire should be either one of the two posts on the cap that are over the shiny “dwell adjust door”, and the distributor rotation is clockwise looking down on it.

  7. Kevin K says:

    go to chevytech.com and go to specification highlight 350 and then to spark plug firing order, that should get the info you need.

  8. hummertech h3 says:

    Mission accomplished!!!!

    Firing order is 18436572. cylinders down the drivers side of the truck starting from the front are 1357 and down the passenger side starting from the front are 2468. looking at the distributor cap from straight up standing in front of the truck you will see an electrical connection pointing out the right side, go counter clockwise 3 towers, this is #1 (driver’s front corner of the cap basically) working clockwise from #1 is then 843657 and 2