Quote:
Originally Posted by ironroad9c1
avoid any gm "Crate" engine , they use poorly cast blocks made in Mexico and are assembled there with poor quality control. find a good seasoned core out of a running truck and rebuild it, almost all used vortec heads I've looked at are cracked at the exhaust valve. they are thin castings
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I've had a couple of ZZ4 crate motors which have been made in Mexico, and I've had excellent service from them. I also have other friends with ZZ383, Ram Jet 350, and all of them are performing just fine. Also, the LS7,LS9, & LSX are assembled in the US. Do you have specific GM crate motors that you can reference?
I just don't accept the large net you've thrown over all GM crate motors.