I saw one on Amazon and eBay for around $170, are there any down sides to them? Should I just find a oem intake?

 

What are you trying to do??

The NNBS/TBSS intake is kinda considered an upgrade over the NBS intake because it's bigger and flows better. It might need other parts to make it a bolt on unit and of course you must tune for it.

 

I'm gunna be bolting it up to my 5.3, I'm gunna do a cam, and milled 243's, but I was wondering if there was a difference in the acdelco version over the oem version

 

More than likely if you went to a dealership and asked for one they would sell you an AC Delco branded part.

 

All gm parts have a gm# and an ac delco # attached to them, so if its ac delco its a direct oe replacement part.... And you can find a complete used setup for not much more.... And be less expensive in the long run!!!

 

Thanks guys!!!!