It's a riddle

Hybrid · 05-06-2007, 01:40 PM

The number on the ECM is 1228747. Where on the block is the number for the motor? That motor might very well be a 305, b/c i bought a new 350 harmonic balancer for it and I can not get it to TDC for the life of me. The coil i replaced in the distributor was a little plastic thing with copper wire coiled around it. It sat underneath the rotor button and it was connected to the sensor in the distributor.

Mike F · 05-06-2007, 10:20 PM

I do not have any info on the 1228747 ecm but do for a 1228746, if it is a 8747 I can not hook into it and the only option would be to convert to a 7747 ecm if I was to mess with it.

The block numbers should be on the top rear edge of the motor.

That coil was probably the pickup and the sensor is the ignition module.

sarge · 05-06-2007, 11:35 PM

Jacob , don't freak if it is a 305 , I have all the 305 stuff off my Camaro.

Hybrid · 05-07-2007, 01:19 PM

The number on the block is 14010207

Mike F · 05-07-2007, 05:05 PM

Quote:

Originally Posted by Hybrid

The number on the block is 14010207

That comes up as a 80-85 350 casting in the book I have. Looks like the guy may have not been to truthfull. Look at the top of the block (cylinder deck) right in front of the left head as you are looking at it, GM would stamp part of the vin code for the vehicle the motor was originaly installed in unless it was a crate motor, but I have the casting numbers for those up to 88.

I can run the casting numbers off the heads also. They are under the valve cover though on top of the head.

What wire harness do you have?

Hybrid · 05-07-2007, 05:52 PM

The place you are describing sounds like where I got the number for the block. The only other number I could find was on the intake manifold which is 14057055, i don't know if that helps or not.

I used a brand new wiring harness from a place called Affordable wiring, or somthing like that, it was awhile ago.

Mike F · 05-07-2007, 06:28 PM

The casting number was behind the right head and was in the mold when the block was cast. The other number in front of the left head is on the cylinder deck (ledge) right in front of the head and is a small number that was stamped on the block when the motor was put in the vehicle. It may or may not have one if they stoped doing it. It is where the saying "matching numbers" comes from with the old muscle cars and how you would know the motor was original to the car.

05-06-2007, 10:20 PM	#2
Mike F EFI AMC 360 Join Date: Mar 2007 Location: New Lebanon, OH Posts: 32	I do not have any info on the 1228747 ecm but do for a 1228746, if it is a 8747 I can not hook into it and the only option would be to convert to a 7747 ecm if I was to mess with it. The block numbers should be on the top rear edge of the motor. That coil was probably the pickup and the sensor is the ignition module. __________________ 89 YJ EFI AMC 360, T18a, D20, built D44, 14 bolt, 38" Creepy Crawlers.

05-07-2007, 06:28 PM	#7
Mike F EFI AMC 360 Join Date: Mar 2007 Location: New Lebanon, OH Posts: 32	The casting number was behind the right head and was in the mold when the block was cast. The other number in front of the left head is on the cylinder deck (ledge) right in front of the head and is a small number that was stamped on the block when the motor was put in the vehicle. It may or may not have one if they stoped doing it. It is where the saying "matching numbers" comes from with the old muscle cars and how you would know the motor was original to the car. __________________ 89 YJ EFI AMC 360, T18a, D20, built D44, 14 bolt, 38" Creepy Crawlers.

05-06-2007, 01:40 PM	#1
Hybrid Join Date: Mar 2007 Location: Fairfield, OH Posts: 134	The number on the ECM is 1228747. Where on the block is the number for the motor? That motor might very well be a 305, b/c i bought a new 350 harmonic balancer for it and I can not get it to TDC for the life of me. The coil i replaced in the distributor was a little plastic thing with copper wire coiled around it. It sat underneath the rotor button and it was connected to the sensor in the distributor.

05-06-2007, 11:35 PM	#3
sarge Pure Bacon Join Date: Jan 2007 Location: Trenton, Oh Posts: 1,098	Jacob , don't freak if it is a 305 , I have all the 305 stuff off my Camaro.

05-07-2007, 01:19 PM	#4
Hybrid Join Date: Mar 2007 Location: Fairfield, OH Posts: 134	The number on the block is 14010207

05-07-2007, 05:52 PM	#6
Hybrid Join Date: Mar 2007 Location: Fairfield, OH Posts: 134	The place you are describing sounds like where I got the number for the block. The only other number I could find was on the intake manifold which is 14057055, i don't know if that helps or not. I used a brand new wiring harness from a place called Affordable wiring, or somthing like that, it was awhile ago.