does anyone know a firing order for a 350 other than the common 1-8-4-3-6-5-7-2?

 

Not really....

This IS mass production, after all. They make em all the same.

The only notable exception is the "4-7 swap" cams, available in profiles suitable for professional racing. NOT yerbasic street hot-rod, for the most part.

I'm going to go out on a limb and guess that you didn't ask this question in a vacuum, that there's some history behind it. What are you REALLY asking?

 

That's it unless somebody put a 4-7 swap cam in it.

 

well i bought my car with the engine already swapped out ant the guy didnt know what the engine was outta. (go figure) but it had a really wierd firing pattern that i had never seen. so i decided to try switching it to the common one. listed above. because it was backfiring so i thought maybe that was the prob. well when i switched it the car wouldnt start at all. i found out the backfire was because my power vavle in the carb went bad so i went to switch the plug wires back but now it wont start so i think i switched two around somewhere. confused yet? lol

 

If it's a GM V8 motor prior to the LS series, odds are near a million to one that the firing order is 18436572.

Sounds like a great place to start would be to locate #1 firing, by putting a piece of hose or something in the #1 spark plug hole; turn the motor until you get compression on that cyl; then rotate the engine slowly by hand until the #1 piston reaches the top. Then look at the rotor and see what plug wire contact it's pointing to, and put the #1 plug wire there, and the others in the normal firing order starting there and going clockwise around the cap.

 

i already tried that. it didnt fire up at all. but ti was running the other way just backfired

 

Then you didn't find #1 compression accurately; or, you don't know which cyl is which #.

See my signature for helpful advice.