Still trying to determine my engine

[jscott]

My Sep 1971 build of my '72 H code Mach 1: While the car is in a shop getting the crossmember replaced that I damaged I finally was able to see the block numbers. I know from prior work I have done I have a 4 BBL intake and 4* heads. So what engine do I really have??

This is what I see on the chart: 2AE-CA 4-bolt blocks in CobraJet only

Numbers on my block:
Numbers on my intake:
Numbers on my heads:

 

[Doug's 73 Mach1]

Block # D2AE-CA is for a 1971 351C High Output. 4-bolt main. The 1J7 is the date code for when the block was cast.

 

[Doug's 73 Mach1]

D2AE-CA also used for 1971 351C 4V non high output

 

[jscott]

But would my H code engine, which should have been a 351C 2V have these numbers? Trying to figure out if block and/or engine is original to car. And the date of 1j7 would translate to?

 

[DAverkamp]

D2AE-CA also used for 1971 351C 4V non high output

That is the casting # for the 4BM block I rebuilt and put into my honey when I stored away the original 2V and FMX a few years ago. I couldn't get the answer of it being '71 HO or not HO, but I guess it doesn't matter cuz she is a HO'r now!

 

[DAverkamp]

My Sep 1971 build of my '72 H code Mach 1: While the car is in a shop getting the crossmember replaced that I damaged I finally was able to see the block numbers. I know from prior work I have done I have a 4 BBL intake and 4* heads. So what engine do I really have??

This is what I see on the chart: 2AE-CA 4-bolt blocks in CobraJet only

Numbers on my block: View attachment 62565
Numbers on my intake: View attachment 62570 View attachment 62571
Numbers on my heads: View attachment 62572View attachment 62573View attachment 62574View attachment 62575

You have to pull the pan to check for 2 or 4 BM.

 

[jpaz]

There should be a partial vin stamped on the drivers side on the back of the block. The heads may have been changed?

 

[Doug's 73 Mach1]

1J7 is September 7, 1971. That casting would move onto machining and assembly at the Cleveland engine plant. So it would not be a complete engine until later in September, perhaps October. The cast "4" on the corner of the cylinder head means the head was made to mate up with a 4 barrel intake manifold. Is the engine original to the car, or was it perhaps was it swapped in?

 

[DAverkamp]

You have to pull the pan to check for 2 or 4 BM.

Oct 10, '71 is the casting date. What does you door tag say?

 

[DAverkamp]

Oct 10, '71 is the casting date. What does you door tag say?

Oct 7th..'71

 

[Doug's 73 Mach1]

Ford did not use the letter "I" to designate the month in date codes as it is easily confused with the number 1. So J was used for September.

 

[DAverkamp]

Ford did not use the letter "I" to designate the month in date codes as it is easily confused with the number 1. So J was used for September.

Those engineers! Would have loved to be a fly on the designing room wall back in the muscle car manufacturers battles.

 

[jscott]

There should be a partial vin stamped on the drivers side on the back of the block. The heads may have been changed?

Would this be looking from underneath or from the engine bay looking down?

 

[Sheriff41]

Just below the driver's side cylinder head on the rear of the block. Use a mirror if the engine is still in the car.

The date code on your cylinder head (OM4) is Dec 4th, 1970 so you may have closed chamber heads.

 

[jscott]

Oct 10, '71 is the casting date. What does you door tag say?

You asked that on purpose I grabbed my camera to go take picture and when I got to the garage it was empty, then remembering the car is at the shop !! Checked my computer to see if I had a pic but I do not.

 

[jpaz]

Would this be looking from underneath or from the engine bay looking down?

I’m skinny and can slide under my car and I can see the stamping. Otherwise you can just take a pic, probably easier from underneath if you jacked the car up a bit.

 

[jscott]

car is on a lift at the shop now, just finished the front crossmember replacement.

 

[Don C]

Would this be looking from underneath or from the engine bay looking down?

Looking at it from the firewall. You'll need a mirror, might be able to take a picture with a cell phone.

 

[DAverkamp]

You asked that on purpose I grabbed my camera to go take picture and when I got to the garage it was empty, then remembering the car is at the shop !! Checked my computer to see if I had a pic but I do not.

You also running a "classic" flip phone yet? Congrats to you cuz a do miss them in certain times!

 

[Don C]

But would my H code engine, which should have been a 351C 2V have these numbers? Trying to figure out if block and/or engine is original to car. And the date of 1j7 would translate to?

Yes, the H code block could have the same numbers, plus the date seems to match your car. The heads appear to be Q code 4V open chamber with a square bore intake manifold from an M code.

Getting the partial VIN from the back end of the block will tell you a lot. If it doesn't have a partial VIN that means it is a replacement block.

The symbol with the "F" in it means Cleveland foundry.