[delory]

I set the firing order on my 70 Chevelle Malibu, stock 307 but has a 69 350, to the standard 18436572 with number 1 at 4 o clock (standing in front, facing the rear) and 1357 on driver 2468 on passenger and it will not start. The old order was different and i was having misfire trouble so i set it to the correct order but now it will not turn over at all. The rotor appears to be 90 degrees off in the counter clockwise direction so i rearranged the plug wires to compensate for that. I know the old order was different and had misfires, but atleast it ran. If anyone has any advice please let me know.

Thanks

[astroracer]

You need to get the #1 piston coming up on the compression stroke and then pull the distributer and re-phase it to the cam.
If the rotor is 90 degrees out just switching the wires is not going to get you what you need. The plugs need to fire at the right time as the piston is building compression and with your current "tune" thats not gonna happen.

[troy-curt]

Just put #1 back where it was and go from there. Actually #1 should be at 7 or 8;00. But as long as it is on # 1 it will run.

Troy

__________________
If you don't make mistakes. your not doing anything.

69 ss rs full custom camaro 98 ISCA grandchampion
69 ss rs bb camaro wifes driver
66 Elcamino 350/all dz parts,ac,windows,loaded,my driver
69 ss chevelle bb conv.fresh frame off
26 T sedan street rod

[Weimer]

The #1 cylinder should be on TDC(top dead center), the rotor should be pointing at #1 which is about the 4:00 position. Then set the plug wires accordingly starting with #1 where the rotor is at is relation to the cap. Also, make sure that the timing gear marks are lined up dot-to-dot when the number #1 cylinder is at TDC. If everything is not lined up correctly....then it won't run.
Here is a diagram that I made to help people out whenever they ask this question.
Hope that helps you out.
Later,
WEIMER

[CurtisL]

The dots on my timing gear both face up.. on the crank and on the cam and my chevy 350 runs fine like that.

[troy-curt]

all v8 chevjpg.jpg

dang computer

[BstMech]

Originally posted by CurtisL
The dots on my timing gear both face up.. on the crank and on the cam and my chevy 350 runs fine like that.

That's because if the dots are pointing toward each other it's on #6 TDC compression, not #1. Both facing 12 o'clock is where you need to be for #1 TDC compression.

[troy-curt]

Weimer,
Your diagram looks really good. And will work good. But just to clear things up, by the manual, number 1 in the cap is in the 7:00 position. As long as it's timed on # 1, and wired on # 1 it will run.

Troy

__________________
If you don't make mistakes. your not doing anything.

69 ss rs full custom camaro 98 ISCA grandchampion
69 ss rs bb camaro wifes driver
66 Elcamino 350/all dz parts,ac,windows,loaded,my driver
69 ss chevelle bb conv.fresh frame off
26 T sedan street rod

[CurtisL]

then how come on the picture they both face each other and not up..?

[troy-curt]

You can line up the timing marks more accurately when installing the gear and chain.

Troy

[docvette]

Originally posted by CurtisL
then how come on the picture they both face each other and not up..?

Hi..
Doc here

Just a question here Curtis...Are you saying your Timing marks BOTH Face the 12 o'clock position...up towards the top of the Engine...??

Cuz If it Ain't Dot to Dot...Cam at 6 o'clock and the Crank at 12 O'clock...either the Cam or the Crank is like, 180 degrees out I'd be thinkin...

My Manual say's... "Align the timing marks (Arrows) Before Bolting the Camshaft Sproket(s) in place. With the Sprockets in this position, The Number 1 cylinder will be at top dead center on the exhaust stroke (TDC on the Compression Stroke for the Number 6 Cylinder)"

And Shows the Dots (Arrows) Dot to Dot 12 and 6 o'clock respectively...

Doc

[troy-curt]

That's the way you do it doc, If curtis takes his cam another 1/2 of a revolution his would be that way to. Or it would not run.

Troy

[docvette]

Hi Troy,

Doc Again

Ok, Soo If I'm gettin' this right, I think, (therefore I have headaches..)
Were Actually Timing the Cam at Number TDC 1 Exhaust Stroke (After Fire) but TDC Compression on 6 Right? (bright shiny objects Pretty women...long legs headlights on the horizion...often Distract me...)
So in theory or practice actually #1TDC Compression will Actually be 12 O'clock Straight up on both of the Gears, Right?

Never Actually put any thought into it over the years, I just assumed dot to dot ...# 1 Cyl and it's all good..Tag it Bag it...

Selective Endorphin Missfire..Tune up time...
The 'Ol Geeze is still learnin'.....

Thanks,
Doc

[BstMech]

Yup.

[CurtisL]

so should i turn my cam another 1/2 a turn the car runs great right now but if it would give me more power to tear it down and reposition my cam then i will do it first thing in the morning. I had some people tell me that the vehicle will run like i have it but they have ended up messing up the valves when they have it like i do.