7D2013580 = serial number (VIN) of donor car
7 = Series 70/Roadmaster
D = 1957 model year
2 = South Gate, CA
013580 = sequential number, range for South Gate was 001001 to 038462
131468 = engine serial number, just a sequential number
(the I's are meant to be read as 1's)
The only engine Buick made in 1957 was the 364 nailhead. You say the engine code is PB, but Buick didn't start using an engine production code until the 1959 model year, so if you can post a picture of that we can see what you are looking at.
Sean Smith
BCA# 42746
MBCC# 2122
SAH# 4186
Buickman Award 2015
1957 Special 4-door Riviera (hardtop) model 43
Bookmarks