Vortec 454/4L80e HD swapped 1999 Tahoe OBS

[bigfootchiro]

I changed out the video, so if you watched the first one, watch the new one in the post above!

 

[Sam Harris]

I changed out the video, so if you watched the first one, watch the new one in the post above!

Ahh hell yeah….!!

 

[bigfootchiro]

 

[bigfootchiro]

 

[Fless]

You'll see it didn't start or idle the best, but it's due to too much fuel pressure. Doesn't always do this, but just need to swap our fuel pressure regulators. I'll get a better video next time, and I'll get one while driving.

EDIT: uploaded a different video

Gnarly!

 

[Tonyrodz]

View attachment 281168 View attachment 281169 View attachment 281170

Is that 3" pipes? Sounds great!

 

[bigfootchiro]

Gnarly!

Thanks man! Took some videos while driving. I'll go through them and see if they are worth posting.

Is that 3" pipes? Sounds great!

Yeah buddy! The only way to go!

 

[bigfootchiro]

NEED MO POWA!!! Can't wait to get that 488 in the garage and start building it. With low compression and forged internals, can't wait to run some nitrous on her. Swap out the cam, heads, and intake.

What fuel injected intake do you guys recommend? I found an oval port Edelbrock Pro Flo Xt, but not sure what others would be better over stock.

Cam suggestions? I was looking at Clay Smith, but I think a custom grind will be best.

The 8.0L has a 58x reluctor wheel, and coil near plug, so I'll be able to run LS tune files

 

[FrankU]

Those 488's are beast's !! Pull a house off the foundation.

Likin that exhaust too .

 

[bigfootchiro]

Those 488's are beast's !! Pull a house off the foundation.

Likin that exhaust too .

Thanks! I wanted to go against the grain and get something most people don't have.

 

[bigfootchiro]

 

[bigfootchiro]

Don't mind my crappy camera work haha

 

[Sam Harris]

Don't mind my crappy camera work haha

Haha!!! Wow that big motor sounds great breathing freely!! [emoji1787][emoji106][emoji631][emoji631][emoji16]

 

[bigfootchiro]

Haha!!! Wow that big motor sounds great breathing freely!! [emoji1787][emoji106][emoji631][emoji631][emoji16]

Murica!

 

[bigfootchiro]

It has arrived!!!

 

[bigfootchiro]

Back to the transmission shop today so they can finally test drive it properly. They have 2 weeks to get it right!

 

[Stonefort]

Trans still acting up??! Just read the entire thread nice work.

 

[bigfootchiro]

Trans still acting up??! Just read the entire thread nice work.

Thanks man! It's a build in process, and learning a lot along the way. They never road tested it, due to open exhaust manifolds , so now it's back with full exhaust. Just like I was thinking, they say it's a fluid flow issue. Hopefully I didn't destroy it too much in the last 100 miles haha

 

[Stonefort]

Thanks man! It's a build in process, and learning a lot along the way. They never road tested it, due to open exhaust manifolds , so now it's back with full exhaust. Just like I was thinking, they say it's a fluid flow issue. Hopefully I didn't destroy it too much in the last 100 miles haha

Dang, I hope not. From my little knowledge, it's really important to investigate any engine and trans electrical issues on these computer controlled transmissions. Fingers crossed.