Help with 5.3 swap!

[Clayman]

How close is close? lol theyre about 4" +/- up on the header...

[00shortbox]

Yeah sounds like a VATS problem, get Nelson to delete it in the tune... as for the oil pressure gauge, use a factory 5.3 sender, should fix you up. I know my LS6 is the same, I used a CTS V sender and it is pegged over 80, just have to swap it for a truck sender to match the harness.

[Clayman]

Yeah sounds like a VATS problem, get Nelson to delete it in the tune... as for the oil pressure gauge, use a factory 5.3 sender, should fix you up. I know my LS6 is the same, I used a CTS V sender and it is pegged over 80, just have to swap it for a truck sender to match the harness.

I got those problems fixed a couple weeks ago... my new pcm came in yesterday so the vats is a nonissue now but thanks for the tips!!

[chvy=power]

How close is close? lol theyre about 4" +/- up on the header...

You need at least 6"

[Clayman]

You need at least 6"

I wondered if that was the problem... i gess ill wait til i get my exhaust ran back before i test any theories

[Clayman]

Got the rev problem fixed... i pulled a bonehead caper... somehow the left bank wires had come unhooked and it wasnt getting spark or fuel cuz of the way i tied the injector wires and coil pack wires for each side in 2 bundles. Hooked those back up and it runs and drives like a DREAAAM!!! for those of you considerin swapping from a 350 tbi to a 5.3... there is no comparison!!! The 350 never thought about havin the power the 5.3 has!!!!!!

[Wagonbacker9]

Glad to see you got it fixed

You need at least 6"

This is a good rule of thumb, but thinking that 2" placement difference of O2 sensors is going to effect the engine's ability to idle significantly is just not realistic. The 02s on my GTO are nowhere near 6" off the collector and I have zero issues with the tune.

Got the rev problem fixed... i pulled a bonehead caper... somehow the left bank wires had come unhooked and it wasnt getting spark or fuel cuz of the way i tied the injector wires and coil pack wires for each side in 2 bundles. Hooked those back up and it runs and drives like a DREAAAM!!! for those of you considerin swapping from a 350 tbi to a 5.3... there is no comparison!!! The 350 never thought about havin the power the 5.3 has!!!!!!

Just the motivation I need! LOL

[Clayman]

Are you planning a swap into a truck?

[94_OBS]

Glad to hear about the oil pressure issue I never heard about that problem. Which adapter did you use?

[Clayman]

I had a brass bushing i bored out and tapped for the obs sender.. did the same for temp sender. Didnt cost me anything but time!