I recently dropped a 350 into my car. I got it from a 93 Caddy that just had it put in less than a year before the guy got hit. I checked all the numbers on the block and it came up gen 1 crate engine ZZ4. How can I be totally sure I do have a ZZ4 engine.

 

Sounds like you already did.

Congratulations on your find.

 

SWEET, It made it sound like there were two versions on that block number.

Thanks

 

Damn dont those have like 355 HP 400 Tq?

 

Its all news to me, All I wanted was a good 350 with low miles. I have a 2.73 rear and it'll smoke em both. I love it.