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Old 05-13-2003, 11:36 AM   #1 (permalink)
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Stroker Firing Order

Got my 347 fired up last night for the first
time. The motor sounds like its got a firing order problem. Its set up just like
the 302 HO firing order. Its sputtering back
through the carb and won't run unless you
move the distributor quite away off of normal
timming. I'm running a Comp Cams 280HR and
an Eagle 347 crank. Should I be using the
302 HO firing order or the 'other' small
block firing order? I don't know what the other firing order is but I understand that
there are two possibilities here.

thanks, Bruce
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Old 05-13-2003, 12:12 PM   #2 (permalink)
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Stroker Firing Order

Sounds like you are a tooth or two off on the mesh of the cam and distributor....

Here is how I initally time and engine for the first time I fire it off.....never had it to fail me....

Start rotating the crankshaft so that you are bringing the #1 cylinder to TDC. Watch your timing pointer and damper and stop when you get the timing pointer at 12* BTDC. Sit the dizzy into the block so the rotor points at #1 plug wire/dizzy cap terminal for #1. This may require you to remove the dizzy a couple times and using a socket or something to turn the oil pump shaft. Once you get the dizzy to seat, align the rotor as close as you can to where the middle of the #1 plug wire terminal is and snug the dizzy retaining bolt/clamp...

If you have the wires on the cap correctly for the firing order (in a counter clockwise manner), then the engine should start first time and every time as long as you have gas and a spark....
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Old 05-13-2003, 12:16 PM   #3 (permalink)
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Stroker Firing Order

Two possible firing orders:

1-5-4-2-6-3-7-8 or 1-3-7-2-6-5-4-8

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Old 05-13-2003, 12:17 PM   #4 (permalink)
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Stroker Firing Order

I would check to make sure what the fireing order is with the cam, 1-5-4-2-6-3-7-8 old style small block, or 1-3-7-2-6-5-4-8 windsor-late model, then recheck the wires.
I actually did the same damn thing when I first tried to start my 347. Took my 2 days and some writting to find out ford had 2 diff. fireing orders in there small block. a BIG thanks to the guys on here. They know what there talkin bout Good luck

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Old 05-13-2003, 06:00 PM   #5 (permalink)
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Stroker Firing Order

280 or 281 HR??? Those are a retro fit hydraulic roller?? It would be the early firing order....If the cam part # has a 31 prefix it's early firing order. If it has a 35 prefix it's the HO firing order

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[ This Message was edited by: teasme on 5/14/03 5:04am ]
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Old 05-14-2003, 02:50 PM   #6 (permalink)
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Stroker Firing Order

Thanks guys, I got it. The distributor was a tooth or two off, far enough anyway to make it sputter back through the carb. I had
about convinced myself that the cam firing
order was wrong for an HO motor. Got it running right last night. I've only got about 10 miles on the motor but it seems
strong as hell down low. Thanks again,

Bruce
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Old 05-14-2003, 03:09 PM   #7 (permalink)
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Stroker Firing Order

Which 347 kit did you get? There are several configurations that will bring you to 347: I'm trying to track the Street use of the 5.40 rod versions, especially where the pin intersects the oil ring.

How did you handle the pickup interference (assuming you are using a dual sump oil pan) with the #3 and #6 throws..or did that come up during in your assymbly?
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Old 05-14-2003, 08:46 PM   #8 (permalink)
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Stroker Firing Order

Beoweof,

I am using an Eagle kit, didn't have any
pickup interference problems. Don't know
yet about the oil consumption issue, I
only have about 60 miles on the engine.

Bruce
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