Official NBS 4.3v6 to GEN 3 V8 swap Guide

[RedHeartbeat]

In dallas they hook to the PCM, make sure its the same year or newer pcm/tune, check for functionality, error codes and verify driveability checks. Next, they may put you on the rollers and install a tailpipe sniffer and check emissions. Be sure you have the cats installed for the visibility section of the inspection.

[zebra]

haha. makes me feel better about TN emissions.
they just plug it up, look underneath to see if it "looks like" you have cats, & check the gas cap seal. i was actually talking to the guy about my engine swap this year

[womack616]

Thanks for the info guys. I also sent a email to a guy I know through my job who works at a local shop and does inspections. He said the same thing, that as long as I don't have any check engine light and keep the emissions in place then it shouldn't be a problem. I miss the old days when you payed 12.50 for a basic inspection. I had a 83 Silverado with a gutted cat and nothing else and it passed every year no problem. At least Texas isn't as bad as California.

[DennisG_02Silverado]

It took me about 6 months before i actually did swap from the time i started looking into it. And didnt realize how many people actually did accomplished it. In between that time i was looking at NNBS 5.3 trucks. Took me about a month to get everything i needed for swap.

Took me two days to do it successfully and started on first try after priming fuel. went from a 11.5 second to 8.7 seconds in 1/8. then best so far on 100 shot was 12.6 @ 107.66mph 2.02 60ft

[carnell]

Reading this gives me some hope. I'm in the final stages of the engine rebuild and will drop the engine in on the 13th

[carnell]

I have a couple of hook up questions.

I have a cut line that in on the underside of my intake. The one side is hooked up to a breather? on the block but the other side???? The line was cut when I got it.

The other question is a movable hard line attached to the fwd top part of my intake manifold. Any ideas????

Carnell

[zebra]

that first hose looks to be going to one side of the throttle body. really, you don't need it - look up the 'throttle body bypass'
the second is your evap hose. it's $26 from the stealership (which is the only place i could find one not torn up). i'll look up a part # for ya in a bit. it hooks to the same place as your stock v6 evap line did - right beside the fuel send/return lines that you'll have to cut

[zebra]

ok, so i can't find that part # and can't go look at it because it's 180mi away (i'm on TDY), but just tell them it's the flex line that hooks to the evap solenoid

[DennisG_02Silverado]

the first picture like zebra stated above isn't neccesscarily needed to connect to throttle body unless ur in real cold climate. i believe its 5/16 heater hose. you'll only need about 3.5' ft. from head to radiator.

second picture... you can just get a piece of 3/8 hose to connect in between metal line to the nylon tube. doesnt hold hardly any pressure

[Bomicheal]

ya just do a tb by-pass, and im doing a swap now and had the same prob so I cut the one part on the evap and the got a hose and connected it.