Anyone have 73 engine case within the range of EA0061568-EA0061586? Options

[doug_b_928]

My original engine didn't come with the car. I've done some rough calculations based on data from the VIN database and personal communication with a local 914 owner whose VIN is fairly close to mine and has the original engine. Based on my calculations, my closest estimate of my car's original engine is EA0061577. I figured I'd throw it out there to see if anyone has a case that's within 9 of this number either above or below. If so, please let me know. The information would help me to refine my estimate of my car's original engine, and also in case one that's 'date code correct' comes up for sale.

[doug_b_928]

Hi Dave,

I didn't know that you had a data base that would be helpful with this kind of determination; terrific! Maybe you can give me insights that are better than what I have. How would one know if an engine is from a 411/412?

My very limited 'research' is explained below.

I'm basing it on info from 3 cars; mine, a car local to me, and the closest one that had info in the VIN data base. The local car was made before mine (I can get the chassis number from him to get the exact day but don't want to bother him for that and his car is undoubtedly in winter storage right now) and Swooshdave's car was made very shortly after mine.

1. My Car:
VIN: 4732900662
Chassis: 3039561
Engine: Unknown
Build date: 8/72

2. Local Car:
VIN: 4732900536
Engine: EA0061433

3. Swooshdave in the VIN database:
VIN: 4732900684
Chassis: 3039568
Engine: EA0061599
Build date: 8/72

Difference in VINs between the Local car and Swooshdave is 148 (684-536)
Difference in Engine numbers is 166 (599-433)
The deviation of the differences between the VINs and engine numbers is 18 (166-148)
So, the engine numbers actually correspond fairly closely to the VINs. Swooshdave’s VIN is 22 after mine. If, and I realize it's a big if due to some of the factors you mention re 411s/412s, the engine numbers corresponded perfectly on that day (based on chassis numbers my car and Swooshdave’s were both made on Wednesday of the 30th week of 72, only 7 cars apart on the line), then subtracting 22 from Swooshdave’s engine number would mean an engine number of EA0061577. Given that the deviation in engine numbers across the Local car and Swooshdave’s VIN-engine number comparisons is 18, and if we then split that 18 (so that's 9 engines from my estimate in either direction), we’d get a range of where my original engine probably fell into of between 568-586.