HOW TO DIY TURBOCHARGE A JUNKYARD BIG BLOCK CHEVY-8.1L GEN 7 496 TURBO-HOW TO MAKE BIG TORQUE GAINS!

HOW DO I MAKE MORE TORQUE WITH MY GEN 7 8.1L BIG BLOCK? CAN I RUN A CHEAP TURBO ON MY 8.1L GEN 7 BIG BLOCK? IS THE GEN 7 BIG BLOCK REALLY AS LS? HOW MUCH BOOST CAN I RUN? HOW MUCH BOOST WILL THE STOCK 8.1L TAKE? WHAT SIZE TURBO SHOULD I USE ON MY 8.1L BIG BLOCK? DOES THE SUMMIT RACING S475 TURBO REALLY WORK? CAN I RUN E85 ON MY TURBO BIG BLOCK? CHECK OUT THIS TEST ON A HIGH-MILEAGE, JUNKYARD, GEN 7, 8.1L BIG BLOCK WITH BOOST. I ADDED AN S475 (T60 TURBO FROM SUMMIT RACING TO THE USED 8.1L (THNX AGAIN AMOS AND DARREN). RUNNING E85 FUEL AND AN ATW INTERCOOLER, I SUCCESSFULLY TURBOCHARGED THE JUNKYARD BIG BLOCK AND MADE SOME IMPRESSIVE TORQUE AND POWER GAINS!

[LawrenceTolman]

glad to see another boosted 8.1! I can vouch for the "tire spinning" torque, mine makes just over 900 ft.lbs. at the tire on 13 psi.

[andyharman]

There's a reason for big blocks. 800 lb*ft of torque at 3500 rpm is ~530 HP. That'll jerk your trailer uphill at a good clip. Why rev any higher?
God created the big block Chevy because he loves us and wants us to be happy.

[bcbloc]

Love an engine with so much torque it breaks the dyno!

[grapeseed]

@6:04 "and that's what happens when we add more boost"
- The G.O.A.T. -

[bradhollinger]

Just pulled the 6.0l out of my 02 2500hd 4x4 4.10 and put in a stock 8.1 (out of an 03 Avalanche) with a Black Bear tune, uh yeah, I'm liking it !

[nastyss]

This seems like a great combo for someone who wants diesel power without a diesel, just wonder how reliable it would be.

[mddunlap]

It’s cool to see the trade off of displacement and tq/rpm. You see the 7.3l able to spin a little more rpm but only makes 500 foot pounds from 1500rpm and up not the 550 you get from the 8.1 but being able to spin faster the 7.3 gets a touch over 500 hp. I really want to see what the 8.1 does with a intake and cam.

[Snorky]

Those torque numbers are unbelievable. Wild! I would be concerned about the low-mid range tq and the connecting rods

[michaelblacktree]

Second-hand 8.1 V8 engines will now have the "youtube tax", LOL. 😛

[ShawnGilbert]

I've had a 496 Mark IV with AFR heads and a marine F2 level procharger on the street in a first gen Camaro...I lol at that torque that's what I tried to explain to people...it was INSANE and completely useless on a 275 pro Drag Radial...

[cbeer]

The 8.1L in my '02 Avalanche is just begging to be unlocked with some tuning! A turbo would be awesome

[joseiracheta]

So much torque that you are breaking load cells. That's awesome. How do you guys calibrate the load cells ?

[connerhill]

I’ve wanted to build one of these engines for years. Now I’m going to find one

[marlonjohnson]

Glad I came across this video I have the 8.1 and about to install into my 1973 chevy malibu so hopefully someone responds to because definitely have alot of questions about where to start what oil pan what motor mounts etc

[twistedpixel]

Just don't try boost with a stock 4l60e. You only get to try it once. It's fun for about 20 seconds or so. After that you get to set in the driveway and listen to your awesome turbo motor.

[davidresar]

Very interesting! I didn't get to catch all of the part one. This however looks very promising for big power! Keep up the good work! Maybe a big bang 8.1l???

[shadjohnsen]

Hell I threw a like on this before the video even started 👍🏼👍🏼

[jeffrykopis]

FYI, I met a fellow on You Tube who was a fleet/plant mechanic at some big firm. He said they had MANY 8.1s on duty, I can't remember if they ran generators or irrigation pumps. He also said they all tended to suffer a catastrophic failure at around 5000 hrs, if I remember right. (It's been a year or so, sue me) I recall they were breaking connecting rods. However, other gents objected, saying things like, "I have 300k miles on my 8.1, hauling fertilizer over the Grapevine", or some such. Food for thought. I would guess that generators or pumps run close to wide open their whole life, I dunno.

[ronstanley]

I would love to see a Dyno run on a 8.1 with a cam, roller rocker arms and headers.

[TheHologrm]

Moar please!!

Thank you this is the motor I wanted you to get into!