2004 6.0 NV4500 Tahoe

[Dantheman1540]

I’ve been thinking about what intake and TB I can upgrade to on my ‘03 5.3 Flex. The TBSS and NNBS are the same? Didn’t realize I’d have to get a x-link harness. That makes the idea a lot less appealing. [emoji53]

From my research yes the NNBS and TBSS are the same but I'm not a pro on the subject. I do know that an Xlink is required for any throttle body that is 6 pin being installed on a truck that was originally 8 pin.

I don't know how much power is really gained as I never did a NBS and 78mm TB swap to a TBSS with 90mm for back to back testing. However every article I've seen praises the TBSS combo.

 

[Rocket Man]

The NBS 6.0 and 5.3 TB are 80 mm and good to about 500 HP and a 90mm isn’t going to do a thing for a NA engine. Even with my blower I don’t need a bigger TB, with a smaller pulley I ran out of injectors( again) but not TB.

 

[Dantheman1540]

The NBS 6.0 and 5.3 TB are 80 mm and good to about 500 HP and a 90mm isn’t going to do a thing for a NA engine. Even with my blower I don’t need a bigger TB, with a smaller pulley I ran out of injectors( again) but not TB.

I agree the 90mm is overkill for an NA motor. Only put it in because I had it and wanted to solve the reduced engine power BS that the 87mm was causing (I think). But one could argue "why did gm put a 90mm on the vette if it wasn't going to make more power?".

I do believe that a bigger TB makes a difference on boosted applications! I assume it would let the blower suck air easier and likely increase boost. May not be noticable at low boost levels or even with a butt dyno but every bit helps. It may also have a minor effect on IAT which are always a struggle with hot air intakes.

But again the gains are probably not financially worth it. That's exactly why I don't have a giant 102mm or whatever the big one out now is. Also my experience with the LS2 is pure 100% reliability even at 19psi.

 

[Sam Harris]

The NBS 6.0 and 5.3 TB are 80 mm and good to about 500 HP and a 90mm isn’t going to do a thing for a NA engine. Even with my blower I don’t need a bigger TB, with a smaller pulley I ran out of injectors( again) but not TB.

Good to know. Thanks Mark. [emoji106]

ETA: was that flex injectors?

 

[Rocket Man]

Good to know. Thanks Mark. [emoji106]

ETA: was that flex injectors?

Yes 8.1 L flex injectors. 50 lb/ hr.

 

[Dantheman1540]

Did some pulls on my way to work today and as expected I see absolutely no change on the AFR gauge or in the butt dyno. I remember reading somewhere that the TBSS/NNBS intakes are designed for optimum flow with the 87mm. Can't find the article though pretty sure it was a Richarld Holdner article.

 

[Dantheman1540]

I'm sad to announce the death of a 10 year friend. Haven't done an autopsy yet but I'm assuming COVID-19 got him. Was driving across town pushing 75-80 with music playing pretty loud and of course the bass knob turned up. Suddenly the deep clear lows turned to some terrible flapping noise and I knew he was dead.

Turns out 10 years of abuse is about the life expectancy of a JLW3-V2. I've no joke had it since 2010/2011 and had it in at least 9 vehicles many of which it just rolled around the trunk due to not being strapped in. There no visible damage but when I push the cone in I can hear a bad noise.

Heres some inside pics of the custom box.

 

[Rocket Man]

I'm sad to announce the death of a 10 year friend. Haven't done an autopsy yet but I'm assuming COVID-19 got him. Was driving across town pushing 75-80 with music playing pretty loud and of course the bass knob turned up. Suddenly the deep clear lows turned to some terrible flapping noise and I knew he was dead.

Turns out 10 years of abuse is about the life expectancy of a JLW3-V2. I've no joke had it since 2010/2011 and had it in at least 9 vehicles many of which it just rolled around the trunk due to not being strapped in. There no visible damage but when I push the cone in I can hear a bad noise.

Heres some inside pics of the custom box.

View attachment 251093 View attachment 251094 View attachment 251095

RIP

 

[Dantheman1540]

New one is on the way. I wanted to upgrade to a W6 but that's more than double the price and I'd rather put that money into my silverado motor.

 

[rgosart]

I'm sad to announce the death of a 10 year friend. Haven't done an autopsy yet but I'm assuming COVID-19 got him. Was driving across town pushing 75-80 with music playing pretty loud and of course the bass knob turned up. Suddenly the deep clear lows turned to some terrible flapping noise and I knew he was dead.

Turns out 10 years of abuse is about the life expectancy of a JLW3-V2. I've no joke had it since 2010/2011 and had it in at least 9 vehicles many of which it just rolled around the trunk due to not being strapped in. There no visible damage but when I push the cone in I can hear a bad noise.

Heres some inside pics of the custom box.

View attachment 251093 View attachment 251094 View attachment 251095

10 years is not bad at all! I have had my 10W3V3 for 6 years and I bought a 12W3 for the Tahoe in 2019. Never had any issues with my JL stuff.

The Tahoe needs a set of components up front. It has been on the list, but not a real high priority because I have some decent 6.5" Rockfords.