67 427 40482 fuel pump

[Hector G.]

Removed the fuel pump from my 67/435 HP, which I purchased over a month ago. I am uncertain as to whether the fuel pump that was removed from the car is original to the car. The car has approximately 15 k miles on it and I believe it was driven just under 500 miles since 1991, and not at all since 2004. Not sure about the car's history prior to 1986...yet.

Some time back in 2011, Joe Lucia had this to say about a 40482, "I really seriously doubt that a fuel pump currently residing on a car built 44 years ago is the original to the car. It's not totally impossible, but I consider it unlikely."

Say it ain't so Joe.


Anyways, I've enclosed photos of the fuel pump. I am familiar with the argument that the stamping on the pump suggests a date
code. In fact, the 5th Edition of the 67 Judging Guide, does as well. As you can see from the photos, there is a part number and some additional numbers preceding the part number 40482. The very first number looks to be a 2 and appears to be different in size from the other numbers. There are some additional markings but not sure what they are.



DSC07565.jpgDSC07563.jpgDSC07562.jpg

So my question to the forum is:


1) Is this an original fuel pump?

2) For those that believe the pump has a date code, what is the date on this pump?


Thanks for your input.

Hector

[David L.]

Re: 67 427 40482 fuel pump

Hector,

IMO, an original pump on a 67 w/427 would have a stamping starting with 2 letters something like AG40482 (where "A" = Jan. and "G" = 1967 (Jan. 1967).
Assuming your pump is stamped "239M40482" it would be dated the 239th day of 1973. It appears that the AC fuel pump date code system changed about the middle of 1970 or so.
I have original fuel pump data from 3 original 70 Z28's as follow:
"BJ40726" (Feb. 1970) on a March 1970 Z28
"DJ40726" (Apr. 1970) on an Apr. 1970 Z28
"197J40726 (197th date of 1970 or July 16, 1970)


Dave

[Hector G.]

Re: 67 427 40482 fuel pump

Thanks David. Good information.

[Joe L.]

Re: 67 427 40482 fuel pump

Removed the fuel pump from my 67/435 HP, which I purchased over a month ago. I am uncertain as to whether the fuel pump that was removed from the car is original to the car. The car has approximately 15 k miles on it and I believe it was driven just under 500 miles since 1991, and not at all since 2004. Not sure about the car's history prior to 1986...yet.

Some time back in 2011, Joe Lucia had this to say about a 40482, "I really seriously doubt that a fuel pump currently residing on a car built 44 years ago is the original to the car. It's not totally impossible, but I consider it unlikely."

Say it ain't so Joe.


Anyways, I've enclosed photos of the fuel pump. I am familiar with the argument that the stamping on the pump suggests a date
code. In fact, the 5th Edition of the 67 Judging Guide, does as well. As you can see from the photos, there is a part number and some additional numbers preceding the part number 40482. The very first number looks to be a 2 and appears to be different in size from the other numbers. There are some additional markings but not sure what they are.



[ATTACH=CONFIG]59733[/ATTACH][ATTACH=CONFIG]59734[/ATTACH][ATTACH=CONFIG]59735[/ATTACH]

So my question to the forum is:


1) Is this an original fuel pump?

2) For those that believe the pump has a date code, what is the date on this pump?


Thanks for your input.

Hector

Hector------


Original or not, would I continue to use this pump? ABSOLUTELY NOT. Whether it was original to the car or a 1973 SERVICE replacement (which it is), it's WAY BEYOND the age of any pump I'd use on a car. It's a failure just waiting to happen, perhaps with tragic consequences.

[Hector G.]

Re: 67 427 40482 fuel pump

Thanks Joe. I do not intend to use this pump again. A replacement pump has already been installed. I went back and notice a "73" cast on the inside of the pump. Based on what you and David noted, I assume it represents the year 1973. How are you able to tell that this is a replacement? Is it the part number or something else. I assume from David's post he believes the M in the stamping stands for 1973. Are you in agreement? Do you happen to have a picture of what an original would look like? The 67 Judging guide has a picture but would it have been the same in a car produced in April of 1967? Finally, in your opinion, can these crimped pumps be properly rebuilt? Thanks again for your help.




"

[Joe L.]

Re: 67 427 40482 fuel pump

Thanks Joe. I do not intend to use this pump again. A replacement pump has already been installed. I went back and notice a "73" cast on the inside of the pump. Based on what you and David noted, I assume it represents the year 1973. How are you able to tell that this is a replacement? Is it the part number or something else. I assume from David's post he believes the M in the stamping stands for 1973. Are you in agreement? Do you happen to have a picture of what an original would look like? The 67 Judging guide has a picture but would it have been the same in a car produced in April of 1967? Finally, in your opinion, can these crimped pumps be properly rebuilt? Thanks again for your help.




"

Hector------


I think it's a 1973 pump. It has to be a replacement because a pump manufactured in 1973 could not possibly have been originally installed on a 1967 model year car.

Personally, I wouldn't use a rebuilt, crimped-style pump. I have heard of these pumps being rebuilt using a NEW bottom section. That might be OK but then half of the original pump in no longer original.

[David L.]

Re: 67 427 40482 fuel pump

I went back and notice a "73" cast on the inside of the pump.

"

Hector,

Around the "73" casting (for the year 1973) is there 1 to 12 radial hash marks? If so, 1 hash mark would be January and 12 hash marks would be December. Original "4657" AC fuel pumps (which can be rebuilt) made in the mid-60's have the casting year and month casting but you really have to know where to look for it.

Dave