can any body help me with a decode of #s from my 80 caballero its as follows tr 26v a51 21l 21 u
utd11c2950045

st 1aw80z 056382

my vin is tw80haz500368 im told this car was a factory 4spd it has one is this true ?im also told its a 350 factory mtr ?? the car i think has the laredo package ??

This info is a little hard to read
st 1aw80z 056382

ST is short for Style

1AW80 - Chevrolet El Camino 2-Dr. Pickup Delivery
Z - Fremont CA assembly plant code
056382 - Body serial Number
056382

tr 26v a51 21l 21 u

TR is short for TRim
26V - Dark Blue Vinyl Seat Trim
A51 - RPO code for Bucket Seats
21L - Lower paint color code for Light Blue Poly
21U - Upper paint color code for Light Blue Poly

utd11c2950045

11C - Production Date, 11=Nov, C=3rd week of
2950045 - Scheduling tracking number



my vin is tw80haz500368
T - GMC Truck Division
W - Caballero
80 - 2-Dr. Pickup Delivery
H - RPO LG4 305 V8 (4-sp. was possible with this engine but its not coded anywhere)
A - 1980 Model Year
Z - Fremont Assembly
500368 - Production Serial Number, the 1st GMC was 500001 so this was the 368th GMC version.

BUT your Trim tag says this is an El Camino, tag should read 5AW80 for GMC. Are you sure you copied everything correctly?

Has this car been fooled with? The VIN says GMC but the body tag says Chevrolet? Something not right.