JUNKYARD LS MONSTER MAKEOVER! HOW TO TRANSFORM YOUR JUNKYARD 5.3L INTO A 7,700 RPM, 542-HP DEMON!

HOW TO BUILD A MAX POWER, 542-HP (ALL MOTOR) 5.3L. CAN I MAKE 100 HP PER LITER WITH A 5.3L? WHAT IS MOST POWER I CAN MAKE WITH A JUNKYARD LS? HOW HIGH CAN I REV MY JUNKYARD LS? CAN I RUN 7500 RPM WITH AN ALUMINUM 5.3L? WHAT CAM SHOULD I RUN TO MAKE BIG POWER? HOW HIGH CAN I REV MY JUNKYARD 5.3L LS? WHAT HEADS SHOULD I RUN TO MAKE MAX POWER! CHECK OUT THIS VIDEO WHERE I WENT LOOKING TO EXCEED 100 HP/LITER ON A 5.3L LS. I DID A TOP-END SWAP ON AN ALUMINUM, JUNKYARD 5.3L L33 AND MANAGED TO COAX 542 HP. CHECK OUT ALL THE DETS AND LEARN HOW TO DO IT YOURSELF!

[baddaddy]

I can see why big dollar engine builders know who Richard Holdener is. You produce excellent content that is relevant to novice guys and build more interest which leads to them eventually. Great vid as always

[timmcooper]

I really appreciate that you spend time with both oddball engines and popular ones. True gearheads have a wide bandwidth of interest and are not brand loyal boo birds. I love all kinds of different engines from model T Fords to Hondas, and LS's, too!! All of these things are really fun to play with and learn about. The rec port 6.0 LS in my 53 year old Land Rover just went "Clunk", now I'm learning about how I can build a stroker out of what's left HaHa!!

[abdullaalameri]

Majestic. Rewatched at least 5 times. Next we need to see 250 + intake cam. 12.5 compression. And test ethanol vs methanol. 600 hp would be magnificent

[Prenquall]

Been watching your vids for a while now and you never disappoint... im building a gen 3 6.0 for my camaro and your vids have really helped me with what path i wanna go with her! Ty for the vids keep up the great work!

[dougpeirce]

540 hp out of a 327 CID NA engine that lasts. Great time to be a hot rodder. This would be a fun engine in a street car with a manual transmission and aggressive exhaust sound, let it sing.

[bobqzzi]

Awesome work. I certainly expect it will make 1620HP with turbos. Can't wait

[teamraptor]

I'd like to see a David Vizard spec'd cam for this combination. He seems to be a fairly sharp ole fella, I'd like to see his theory in action in a back to back test. Thanks for all you do Richard, keep up great work. It is truly valuable.

[logandimmer]

So on 6.0, with similar mods, we could see 600hp, maybe even more with rec port heads? I would love to see this same setup on a 6.0, reving to the moon. As always love the videos, great info and nothing beats the sound of a screaming LS.

[burnz]

M1 of course!!! It will push some nice numbers and give it a good cleaning! Lol. Just remember to run some regular through it afterwards and toss the oil.

[safwanhassan]

He got lucky with that l33 that motor been running great and his been working the heck out of it 😮🎉

[baddog]

Nice job. From what I've heard e85 doesn't make a big difference in a N/A engine. But let's see ! Inquiring minds wanta know !

[Charlie-qbsy]

I really like your testing, you have the best LS information on YouTube. How about testing exhaust, header diameter and exhaust diameter. example 1-7/8 header with 2-1/2 exhaust vs 1-3/4 headers with 2-1/2 exhaust. you could also include 3" exhaust. this would be really helpful for us daily driven guys.

[michaelblacktree]

Any day you break 100 hp per liter is a good day. BTW, thanks for the closeup shots of the hardware. 👍

[whataboutbob]

7000rpm+ always sounds good 👍
Nice looking tq curve.

[allthathpandnotire]

All the old sbc guys were happy with 1 hp per ci. Taking stock junkyard stuff now days and getting 100 hp per liter is no joke. My 6.0 is making about that n/a and it’s a wild ride For stock junk.

[richardweihert]

I would like to see an overlay with the previous configuration. Also I would like to see some testing with Texas speed CNC ported 243/799 heads. I want to build and swap a 6.0 into my 1973 Nova, but the numbers you are getting with a more readily available 5.3 has me reconsidering that idea.

[bluecollarhotrods]

I'm curious what the overlay of the 510 hp combination would have looked like vs. this combo. And... I wonder what just changing the camshaft would have done for power and leave the LSXR on it.

[mariQ]

This setup with a 6-speed MT and Nitrous to makeup for torque loss in a foxbody would be badass. Let alone with a turbo.. Rich I been keeping up with your videos for YEARS and a subscriber from different accounts now lol.. can you please run a High RPM shootout with NOS + Turbo on the 4.8, 5.3 and the LS3 Destroker to see how they differentiate or compare to one another under boost. I’ve seen other videos of 6.0s with 4.8 cranks running a 75mm-88mm turbos and they’re all sick !! Thanks Richard 🙏🏼

[Bozemanjustin]

Richard holdener

On one of the episodes of engine masters, they were trying different size heads on I believe a 408

They showed that the 225 head was too large for that motor

So if a 225 is too large for a 408, wouldn't it be too large for a 325?

Wouldn't a 195 be maximum?

Guys on engine masters even got great results with the 165 heads. They actually impressed themselves, brulee even said that he would take the small head and cam. Com combination for a daily driver

[ryankinman]

Awesome video, after this it just makes me wonder can you get the junkyard 5.3 to 600hp N/A?