LS5 fuel pump points deduction question

[Tom L.]

My LS5 's 40770 fuel pump had to be replaced a number of years ago. I replaced it with an AC Delco pump with the AC cast into it. I looked at the judging sheets and see that the pump is worth 20 points. 11 for originality and 9 for condition. Not being versed in deductions AT ALL I was wondering if someone could comment on the deductions for the following two scenarios.

1. The deduction for an AC Delco reproduction

2. The deduction for a rebuilt 40770 pump with a slightly bent inlet elbow. The one that the "S" fuel line attaches to.

Thanks!

[Hank D.]

Re: LS5 fuel pump points deduction question

I'm not familiar with the part in question, but as our National Judging Chairman is fond of saying the NCRS judging process can lend itself to judging a coke can. That said, absent any standard deduction, which I'm sure would not apply here, I would first determine if the part appears reasonably correct with respect to Typical Factory Production. If so, I would use CDCIF in both scenarios.

It appears from your description that there would be a CONFIGURATION issue in both scenarios, so a 20% deduction applies (that's 2-points). Assuming there is no DATE to be judged, the part is COMPLETE and INSTALLED correctly, and the FINISH is TFP, then the total deduction is just 2-points. Additional 2-point deductions would apply if any of the aforementioned attributes of CDCIF are not TFP.


Now if the part were considered something that would appear NOT reasonably correct for this particular Corvette, such as a fuel pump from a third-party manufacturer, then a full deduction should apply, including all CONDITION points.


My two cents.

[David H.]

Re: LS5 fuel pump points deduction question

Tom

Standard Deduction #13 provides guidance on replacement parts (see below).

JRM Section 3, #9, "Originality Scoring" (pages 34-35 of JRM #9) specify C.D.C.I.F. criteria (see below).

Per your questions 1 & 2, You can assess what those deductions would likely be. Not being able to see the item in question, Tech Board responses can only speculate.

Per #13, the item must be judged based on the overall degree of correctness as installed. "Easy to spot" (e.g. Mustang Hub Cap) differences are "significantly dissimilar" and would warrant a total deduct.

From your description, i.e. "bent elbow" - a Configuration issue, as stated above, a 20% deduction would be assessed. (2 Originality points).

Condition is judged without regard to Originality (10% rule). If "like new" condition, then no Condition deduction.



An example of "significantly dissimilar": an electric fuel pump would be significantly dissimilar and warrant a 100% Originality deduction (11 points). As less than 10% Originality remains (100% deduct), then Condition CANNOT be assessed and, in your case, a 9 point Condition deduction would be in order. (20 Points Total)

Dave

C Configuration - The manner, in which components are shaped, molded, cast or machined. Part number, casting mark/logo should be considered part of the configuration
D Date - The degree to which the component date conforms to the logical sequence of manufacture and typically observed GM supply sourcing intervals. The date may be distinguished by means other than being stamped, cast, etc., into a component
C Completeness - The degree to which the component is totally present
I Installation - The degree to which the component is installed correctly
F Finish - The degree to which the component surface finish, gloss, texture, color, tint
and type conform to our judging standard

-------------

13. GM-SERVICE REPLACEMENT, GM-LICENSED REPRODCUTION PARTS AND NON-OEM PARTS
There is a wide variation in original versus later issue versus present-day configuration of items listed and sold by GM as service replacement, GM-licensed reproduction and non-OEM parts. It is therefore difficult to place a consistent, fair deduction on each item. All parts that are correct and indiscernible from original as installed will receive no originality deduction even though a judge may know, or thinks he/she knows, they are not original components. There can be no deduction because a judge thinks an item looks too new to be an original item. See Section 3, item #9.
Originality deductions are to be made based not on the fact that is a GM-service replacement, a GM- licensed reproduction or non-OEM component. The item must be judged based on the overall degree of correctness as installed on a given car.
Parts that appear reasonably correct as installed will be evaluated for originality (and possible deduction) per CDCIF section 3, item #9.
Parts that are significantly dissimilar as installed will receive a Standard Deduction of 100% for Originality per Section 3, item #14. Team Leader concurrence is required.

[Patrick H.]

Re: LS5 fuel pump points deduction question

I'd say that "bent elbow" could be a condition deduction if it appears to be due to damage post-production.
I would place it under configuration only if it appeared that it was made with the wrong bend, or made with a bend not typical of production.

[Tom L.]

Re: LS5 fuel pump points deduction question

Well I looked closer on my end and the replacement pump was not an AC Delco replacement as I remembered. It was an aftermarket piece from one of our Corvette vendors. As far as what I thought was my original pump, I was apparently wrong on that too. So I'll follow up with a more relevant question. My old pump is definitely a 40770 AC pump. Before I posted I didn't know that they were date coded. It's a 4 digital code, 003Z. 3rd day of January but what does the Z mean? Saw some posts indicating that there was a letter system for the year but nothing mentioning Z. Thoughts?

[Patrick H.]

Re: LS5 fuel pump points deduction question

I have some of the codes, but if you look inside the mount under the lever, you may see a year date cast in place.

[Mike E.]

Re: LS5 fuel pump points deduction question

Here are some pics that might help. These three are from the original pump on my LS6 (1971) after it was restored. Note the number of holes in the body, the configuration of the outlets on the bottom, and the date/part number stamping. The configuration on these three are correct from the factory. On the other two pumps there are non-factory configurations.
fuel pump original restored (7).jpgfuel pump original restored (5).jpgfuel pump original restored (10).jpg



These three are from an NOS pump in a box dated February 1993:
Fuel pump NOS 40770 (4).jpgFuel pump NOS 40770 (3).jpgFuel pump NOS 40770 (9).jpg



These three are from the replacement pump that was installed about 1978:
fuel pump replacement that also came with LS6 (1).jpgfuel pump replacement that also came with LS6 (3).jpgfuel pump replacement that also came with LS6 (6).jpg

I hope the above helps. Photos below are of the original pump unrestored.