502 HT in 99 crew can Dually

[Death Dually 99]

Anyone put a 502 HT in there truck to replace there 454 vortec ?

 

[RichLo]

should bolt up for the most part if you have the $$$

Probably going to have to upgrade your fuel system though.

 

[88GMCtruck]

Should be basically drop in, but you'll need a new tune and likely injectors.

Stock fuel pump should work fine with that, as long as everything is tuned properly.