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Chevrolet 5.3L LS Budget Engine Build - 644HP Junkyard 5.3L

Buy A Budget LS Engine, Add A Cam, Carburetor, Headers, And-Oh Yeah-A Procharger Centrifugal Blower, Mix 'Em Together To Build A...

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The ProCharger LSx Serpentine System
We obtained our ProCharger system through our pals at The Supercharger Store, and the kit includes a system that relocates the alternator and power steering pump to create enough room for the supercharger. The beauty of this design is that it does not rely on the narrow, six-rib, stock serpentine belt package. ProCharger instead adds a separate blower pulley to the crank-necessitating a swap to an ATI harmonic balancer-that spins an eight-rib belt wholly for the supercharger. This does add length to the overall engine package, but ProCharger says the company has already fit these blower packages in early Chevelles.

Water Injection
The big issue with making boost is that it also adds heat. The one-two punch of heat and added cylinder pressure makes it very difficult for pump gas to control detonation. One solution is to inject a measured amount of water into the inlet system when the engine is under boost. The secret is called latent heat of vaporization. The simple side of this concept is that during the conversion of a liquid to a gas, heat is absorbed, which lowers the inlet air temperature. This is the same concept your body utilizes to regulate excess heat by using sweat to pull heat away from your skin. In your engine, the injected water cools the air and makes it denser (a greater amount of oxygen in a given space). The water doesn't put out the flame, as is the common misconception. Instead, the small amount of injected water reduces the peak cylinder pressures that contribute to detonation.

The two keys to water injection are to use as little as necessary and to inject the water in very fine droplets to allow them to more easily vaporize. This is exactly the design for The Supercharger Store's water injection system. While is not inexpensive, that is mainly due to the high-pressure pump and engineered injector nozzle that are required to help vaporize the water. For blow-through centrifugal superchargers, The Supercharger Store mounts the nozzle upstream of the supercharger inlet to take maximum advantage of the water's inherent cooling abilities. We didn't get a chance to try the water injection on our engine, but we can tell you that it does work. Bob and Terry Woods at the Supercharger Store currently have a ProCharger D1SC blower on a 318ci Mopar engine that has made 663 hp at 6,000 rpm with 91-octane pump gas and water injection at 16 psi and 30 degrees of total timing. The package is in a '73 Plymouth Scamp that runs 12.55 at 118 mph and gets 16 mpg on the highway. Before you replicate this tuneup, be aware that the Supercharger Store is at 4,200 feet. If you're closer to sea level, plan on using less timing and boost.

Testing, Evaluations, and Conclusions
We knew from previous experience with this P1SC supercharger that we could see a 50 percent power increase. We also hoped we could pull 400 hp out of the stock 5.3L motor, which we also achieved. After determining that belt slip was causing our boost drop-off at higher engine speeds, we tightened the snot out of the drivebelt. The first pull after that generated well over 600 hp. Yeehaw! In fact, we had to install a larger 4.15 pulley on the supercharger to keep the boost level below 15 psi to protect the factory cast pistons. We added four jet sizes to both the primary and secondary to ensure a safe air/fuel ratio and used MSD's software to program the ignition curve to no more than 22 degrees of ignition timing. Westech's Steve Brulé also pulled out 2 degrees of timing between 4,000 and 5,500 rpm, where maximum torque occurs, to again keep us out of detonation. With that tune-up, the engine pulled out 644 hp at 6,500 along with a best torque of 546 lb-ft at 5,900 rpm.

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194 comments
Cathy Hall
Cathy Hall

It really doesn't matter what engine you build as long as the mechanic knows what their doing and I think the mechanics at fast are the best. Way to go Travis and the crew!!!

Age Cobra
Age Cobra

You don't a lot of cubes and the best big block are Fords and ChryCos.I never pit Aerican Muscle over each other anymore.It is Muscle vs imports.

James Hayward
James Hayward

Buicks arent high winders but pull like freight trains.......ive got a 70 buick gsx, 455, stage 1, 4spd , all original, and runs like a raped ape...........

Peter Papaleo
Peter Papaleo

No find three so when the first two blow up you have a third spare

Peter Papaleo
Peter Papaleo

Umm I didn't think the 5.3&4.8 were ls engines. Aren't they Vortec truck engines?

Craig Serrano
Craig Serrano

I'd go 4.8L with a turbo, if these guys can tune them and squeeze 6-700hp out of a stock bottom end, cam, and a pair of heads, and get 30mpg. Why would you need anything more on the street? Other than more's never enough:)

Bob Strongarms
Bob Strongarms

LS = easy HP in a compact & lightweight package. No need for a big block anymore unless you really want to run one.

Branden Knives Ross
Branden Knives Ross

as sweet as the buick 455 is, the block simply cannot sustain much more than 600 horse, not that you need much more than that

Christopher Spielvogel
Christopher Spielvogel

its easy! big turbo on jy LSx motor and start stacking up spares bcuause they pop like poprocks.

Michael Palombo
Michael Palombo

LM7, 5.3L stroker engine from the chevy trailblazer- can be boosted up to 1000hp! On stock internals!

Ted David Burrell
Ted David Burrell

Love the mix of new and old. Too bad this one appears to be coil-on-plug powered. Those aluminum heads must be worth their weight in gold!

Ken Dennis
Ken Dennis

woodstock woody...step 2 take ford motor in for scrap beg for gm back take ford scrap money get a coffee and get back to building

Teahartea Vatara
Teahartea Vatara

TÉMOIGNAGE: Si vous voulez faire un prêt entre particulier merci prendre contacte ( essemevo@gmail.com ) avec cet Mr Philippe qui m'a rendu le sourire aux lèvres. J'ai plusieurs collègues qui ont aussi reçus des prêts à son niveau sans problèmes au lieu de vous faire avoir par des individus mal intentionnés qui prennent pour travaillent à escroqué les innocents et je publie ce message parce qu'elle m'a fait du bien avec ce prêt et ne vous découragés pas parce que moi je me suis fait avoir mais j'ai rencontré cet monsieur honnête et Généreux alors prenez contacte avec lui: voici son Email: essemevo@gmail.com Merci de faire comme moi et envoyer votre demande pour obtenir votre prêt en 48 heures au plus. MERCI DE PARTAGER CETTE INFORMATION POUR AIDER NOS FRÈRE NOS AMIS ET AUTRES.

Gene Stribling
Gene Stribling

we don't like them if we got one for free and all the parts for it we say no

Doug Nelson
Doug Nelson

Im doing a 5.3 in my 76 nova. Help me go low buck... Please. Like under $1000.

Don Morris
Don Morris

You can make over a 1000 hp on a small block

Matt Pound
Matt Pound

$4,000 you can have 800whp all day with a 5.3

Scott Petty
Scott Petty

I don't consider $7,000 a budget build. I could have an inline 6 with more power for the same cash.

Scott Petty
Scott Petty

nevermind. Budget build = $7,000. lmao.

Dennis Jones
Dennis Jones

LQ4 with Twin Turbos that is my dream engine

Michel Loup
Michel Loup

or pontiac sd 421 dual 4bbl 488 hp stock

Michel Loup
Michel Loup

302 dz best smal block or 454 best big block

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