REBUILT ENGINE-7.4L V8 GEN.IV 1973-90 (reverse rotation )- FIRGM454RA

REBUILT ENGINE-7.4L V8 GEN.IV 1973-90 (REVERSE ROTATION) 2 piece rear main seal. Oval intake port heads. Block IV Generation , 10 bolt timing cover. Flat tapped. 454 / 7.4L - V8 To make sure you have the correct engine, the Block casting numbers and the cylinder head casting numbers must match these last three numbers of the numbers below, from you old engine and cylinder head. Block casting numbers- 14005445* 3999293* 3999289* 3963512* 3916321* 361959* 14005445* 286* 289* 775* Cylinder head casting numbers- 6272292* 353049* 336781* 14081045* 14092360* 348236* 6272292* 353049* 336781* 186* 416*