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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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It's a recurring theme from which we just can't seem to escape. We discovered an iron 5.3L truck engine on Craigslist for $300, handed the owner three bones, tossed the greasy long-block in the back of our trusty GMC pickup truck, and headed for the barn. The plan was to slip a cam in it and see what would happen when we bolted on a ProCharger P1SC self-contained centrifugal supercharger. Self-contained means you don't have to punch an oil return hole in the pan to make this blower work. It also means we had little self-control when it came to bolting that blower to the unsuspecting little 5.3L truck motor. The opportunity was more than we could resist.

You may recall we've done this before-twice. The first time ("Make 600 HP on Pump Gas," Dec. '07), we pounced on a junkyard Ford 5.0L motor. With a set of RHS heads, a Comp hydraulic roller, an Edelbrock intake, and a blow-through Holley, the ProCharger huffed and puffed to 605 hp at 6,200 rpm. We were so jazzed by the P1SC's performance that we tried again with a 350ci small-block Chevy ("A Boat Anchor into a 611HP Screamer," Feb. '09) that made 611 hp at 6,000 rpm. We decided to pull off the hat trick with a 'tweener 5.3L (325ci) LS engine. That's when our good idea turned a little sideways. After The Supercharger Store sent us the kit, we discovered the cheapie iron block 5.3L motor was missing a couple of essential mount bosses for the accessory drive. By the time we realized this, we had no time to make a new mounting bracket (see the "When in Doubt, Adapt"). So we punted and used an aluminum block 5.3L motor instead. The mount is actually for the power steering pump (or idler if the pump is not used). The supercharger uses a completely separate eight-rib drivebelt. ProCharger has promised a kit to accommodate the iron block soon after you read this. Our test is still valid since there's no difference between an iron and an aluminum 5.3L. In spite of all this drama, we did make 644 hp . That made the sacrifices a little easier to take, don't you think?

CAM SPECS

DURATION ADVERTISED DURATION AT 0.050 LIFT LOBE SEPARATION
Comp Cams, intake 269 219 0.607 112
269LrHR12, exhaust 277 227 0.614

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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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