I have a 99 Suburban 1500 with 5.7 Vortec. My dad has a 99 Express 3500 van with 5.7 also. I know the 2500 suburban with 5.7 had a ypipe that is a good upgrade for the 1500's. Anyone know if the 3500 van has the same? It's a parts van now. Also, will the pcm work for the 0411 upgrade?
Y pipe from Express 3500 van
- Thread starter Smokinf1
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