engine firing order
can anyone give me the firing order for a stock 77. is there a diagram ? what are the best plug and wires for this model ??
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1 8 4 3 6 5 7 2. same as all chevy 350's.
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The A.I.M. (assembly instruction manual) is great for stuff like this. Yes, it has a diagram. Easy to see all the engine compartment wires. Dizzy rotates clockwise as you look down on it. Driver's side, front to back, 1-3-5-7. Passenger's side, front to back, 2-4-6-8. Now follow with the 1 8 4 3 6 5 7 2 sequence.
Without you filling out your profile, it's a little harder for us to help with information. Are you using other-than-stock spark plugs? Several manufacturers of wires (e.g. Jacobs, Delco, etc.). What kind of driving style? There's a lot of folks here with tons of experience. |
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I would buy stock Delco wires and plugs. You can get Delco wires at Advance and O'Rieleys. I have also had good luck with Moroso Blue Max wires.
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Originally Posted by Trae1976
(Post 1563571629)
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Either the dist is off a tooth or the rotor needs to be 180'd.. Im sure you started at TDC on #1..
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Originally Posted by rayluka
(Post 1563572693)
I used this exact diagram and found all my wires needed to be clocked back one spot counterclockwise on the distributor. I couldnt get it to run. My friend who is a mechanic on the pier in Long Beach saw it immediately. Maybe its my setup as the firing order is the same but #1started at the # 2 spot and so on. If it works for you dont let me confuse you, but if you run into a problem you may want to look at this as an option.
Steve PS: Plugs are plugs, wires are wires, save money. |
Originally Posted by Trae1976
(Post 1563571629)
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Originally Posted by rayluka
(Post 1563572693)
I used this exact diagram and found all my wires needed to be clocked back one spot counterclockwise on the distributor. I couldnt get it to run. My friend who is a mechanic on the pier in Long Beach saw it immediately. Maybe its my setup as the firing order is the same but #1started at the # 2 spot and so on. If it works for you dont let me confuse you, but if you run into a problem you may want to look at this as an option.
This one is correct, just not as "clear": http://z.about.com/d/autorepair/1/0/...ring_order.gif |
Actually, the position of #1 on the distributor to the pass. side stems back to 1955, if you check the maintenance manual that's where it's put. The later way suits the HEI style better.
BTW did you know that you can now get HEI caps which are phased correct for cylinder position and firing order. |
The first drawing is more clear to me, but it really doesn't matter...put #1 wherever it falls on the cap, and then follow it around according to the firing order.
You can drop the distributor in anywhere, and still end up with proper wire routing, usually the vac advance can is the limiting factor. Steve |
Originally Posted by Vettebuyer5869
(Post 1563574303)
Why do they bother with a tech section on this forum? Seems pointless.
You should start your own website. See if you can get all of the other negative people to go with you.. Otherwise thanks for your input on this subject.. |
thank you all for the great help. I will get started on this tonite about 10pm after I get off work.
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Hey, just for grins here...what about the 4/7 cam :D
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427basketcase
I was thinking the same thing...OEM SBC is: 1 8 4 3 6 5 7 2 (as mentioned). If someone installed a 4/7 cam conversion it would be: 1-8-7-3-6-5-4-2 I did grin...but it is something to be aware of when trouble shooting. (They say switching the firing order of 4 and 7 is worth 5 to 30 HP?, but you need the 4/7 cam installed) |
Originally Posted by Trae1976
(Post 1563575379)
:lol: at myself, don't know why I didn't spot that. That's not my diagram, just one I found on another website to help out the OP. You are correct, that doesn't match the stock configuration. Sorry for the confustion. :o
This one is correct, just not as "clear": http://z.about.com/d/autorepair/1/0/...ring_order.gif Good picture!! You can remember the installation without a picture. Note; looking down on the top of the distributor cap, how the distributor wire connection for number 1 cylinder is the closest connection and in-line with number 1 cylinder. This is the best position for the cap to allow for distributor timing (most uninterrupted cap movement at this position). Firing order is written on the intake manifold, (raised numbers manufactured on the intake) :thumbs: |
Is it the same for the BB 454
Is it the same for the BB 454
Originally Posted by rayluka
(Post 1563572693)
I used this exact diagram and found all my wires needed to be clocked back one spot counterclockwise on the distributor. I couldnt get it to run. My friend who is a mechanic on the pier in Long Beach saw it immediately. Maybe its my setup as the firing order is the same but #1started at the # 2 spot and so on. If it works for you dont let me confuse you, but if you run into a problem you may want to look at this as an option.
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Originally Posted by Merlinhaggard
(Post 1563580670)
You should start your own website. See if you can get all of the other negative people to go with you..
Otherwise thanks for your input on this subject.. Peace,,,Moosie :seeya |
Originally Posted by Trae1976
(Post 1563571629)
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