BigBlock90

iTrader: (4)

ive had fun with the 461BBC for a while now and have became bored with it. it made 441rwhp/530rwtq on that carbed motor but just wasnt enough. i then added a nitrous kit to it and it pulled 601rwhp/695rwtq on the 175 jets but that too got aggrivating real fast with filling bottles so often.

on to NOW.... i have researched the LS motors and all these turbo swaps for a good while on here now, SO THANKS TO ALL YOU GUYS FOR SPENDING MY MONEY!! after seeing in real time the power those lil engines make then i knew i was hooked.

i took a 2003 Tahoe 4.8 engine, added a z06 vette cam, pac1218 springs, new head gaskets, arp head studs, a Fast lsxrt 102mm truck intake, holley fuel rails, 80lb injectors, snow performance stage 2 meth kit, all stainless braided -an fuel lines and fittings, a vette regulator/filter combo set for 58psi, aeromotive 340 pump in the tank, and bolted everything up to my 4l80e and billet 3400 converter. all exhaust will be 4" back to axle.

the turbo is a Borg Warner Bullseye S480 with race cover. 44mm wastegate and a 50mm blow off valve. im in process of building a 6.0 to swap in later, hence the reason for such a turbo right now.

i used the stock overflow jug as my methanol tank and installed a nice polished billet catch can beside the battery for the radiator.

i bought the aluminum bracket kit from LSBrackets.com to keep my air conditioning and the same serpintine belt runs it all.

i used a PSI wiring harness for the engine. just 4 wires to hook up and she fired on the first hit.

i installed a massive high output 2 speed electric fan and wired it on twin relays for my ecm to control the fan speeds when running normal vs turning the ac on. i mounted my intercooler between radiator and fan. the truck setting around idling never even gets any temperature hardly with the massive radiator from the big block.

on to the purty stuff!!

the engine ready to install...


the engine setting in its new home...


intercooler mounted...


the wastegate and dump tube mounted...


the intake..


and how it sets finished up... the down pipe isnt installed in this pic but you get the point!!


the truck that its in....


i will update thread as soon as we get it tuned on the dyno in the next week or so and i'll be sure and bring a video aswell :-)

thanks for looking,
Jamie

03sierraslt

iTrader: (22)

Nice, curious to see how it does for ya.

1969x11

iTrader: (38)

Awesome build !!!! Got any pics of your hot pipes?? I'm also wondering how the vette filter/ regulator is going to work out.

BigBlock90

iTrader: (4)

i have taken a few shots of the hot pipes. i will post them up in a bit. i used 2 passenger side manifolds and cut the front and rear out of the one i used on the driver side and used 2.5" v-bands and welded them on.

ive seen several guys around here running the vette regulator filter assymbly on boosted trucks and cars with good results, but have had a few tell me to run the aeromotive 13301 vaccum referenced regulator that i have setn on the work bench...haha. i will see how it does first and then switch out if i need too. im not shooting for a huge horsepower truck. just a nice cruiser for some weekend fun.

Jamie

1969x11

iTrader: (38)

Sounds like you've got your $hit together. I have always wanted one of these trucks...with an LS swap. Get out there and find the limits of that 4.8 LOL .

Blown06

iTrader: (32)

You have committed a sin. Clean install but you have ruined the truck in my eyes. If something came with a rat motor in it.........it should have a rat motor in it. But hey, thats what this hobby is all about. Rant over.

TIM Z

iTrader: (12)

This is sick !! One of my fav body styles with boosted LS powah , I want !!
Nice clean install , I like the turbo mounted on driver side , nice job .


I disagree , as long as he keeps the original BBC in the corner if the garage it can always be put back in . Might as well make it run as good as it looks IMO .

BigBlock90

iTrader: (4)

i hung a rod through the stock block many years ago and then built a .030 461 for it with aluminum heads and lots of goodie's and threw a carb on it. ive just grown tired of the gas sucking big motor so i pulled it an sat it on a crate for safe keeping just in case :-)

thank you, i cant wait to tune it and see what happens.

custm2500

iTrader: (10)

I don't see that intercooler being very effective. I know with trans coolers they rate them at how efficient they are in front and behind of the radiator such as the one I just installed on our automatic semi. I think it was like 40% if behind the radiator. I don't know if there is any data about intercoolers?

operatorfailure

iTrader: (3)

I have been thinking about doing this same thing, like a homemade log manifold on my 68 c-10. I would love to see pictures of the manifold if you could.