Engine Identification
Engine code letters are suffix of Engine Identification Number. Number is stamped in pad on front right side of cylinder block.
CHEVROLET & GMC
| Application | Man. Trans. | Auto. Trans | |
|---|---|---|---|
| 305" (5.01) 2-Bbl. | |||
| Federal | TYA, UTH, UTL | TYB, UTF, UTJ | |
| 350" (5.7L) 2-Bbl. (VIN P) | |||
| Federal | UFT | UFU | |
| 350" (5.7L) 4-Bbl. (VIN L) | |||
| Federal | TDB, TDD, TDH, JDK, TDM, TDU, TFA, TFB, TKA, TKD, TKY, TMU | TDA, TDF, TDJ, TDL, TDW, TKK, TKL, TKM, TKR, TKS, TKT | |
| Calif. | TDM, TKD, TKH, TKZ, TMU | TDR, TDT, TDW, TDY, TKK, TKL, TKM, TKR, TKS, TKT, TKU, UFA | |
| 350" (5.7L) 4-Bbl. (VIN M) | |||
| Federal | TFH, UFB, UFD, UFH | TJW, UFC, UFF, UFJ, UFK, UFS | |
| Calif. | TMA, TMJ, TMK, TML | TMM, TMR, TMS, TMT, UFR | |
| 400" (6.6L) 4-Bbl. (VIN R) | |||
| Federal | ..... | TLB, TLC | |
| Calif. | ..... | TLK, TLW | |
| 400" (6.6L) 4-Bbl. (VIN X) | |||
| Federal | ..... | TLX, TLY | |
| Calif. | ..... | TTB, TTC | |