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Engine

PRODUCT SPOTLIGHT: Smeding Performance’s 408″ LS3

For the hot rodder who demands usability and performance, Smeding Performance’s 408” LS3 engines are designed to take your project to the next level. These aren’t your typical cookie-cutter kits—they’re full-fledged, turnkey engine packages built to drop into your classic chassis and turn it into a road-ready rocket. Whether you’re chasing street-friendly power or show-stopping performance, Smeding has you covered with engines dialed in for hot rod perfection.

LS1 CAM SWAP AND DYNO TEST

When it comes to adding power to your small-block Chevy, the camshaft is an integral part of the performance equation. Luckily for owners of Chevy’s latest iteration (Gen III) of the famous small block, the modern fuel-injected LS1 responds just as well to camshaft upgrades as the LT1s, L79s and L48s of old. Naturally, cam technology has come a long way since the days of the Duntov 30-30 profile. The improvements in cam technology are important, as the new LS1 is head and shoulders above any of the old ’60s and ’70s muscle-car small blocks, regardless of the advertised power ratings.

CRATE OPPORTUNITIES

If you’ve ever imagined a time when you could simply pick up the phone or send an e-mail to General Motors and order the engine of your dreams, pull it out of a box delivered to your door and plug it into the car of your dreams, then stop dreaming as that time has come. While it’s not new information that GM Performance Parts provides an assortment of engines to choose from, it’s never been easier to select the one that is best for your budget and the intended purpose of your car.

LS is MORE

When GM introduced the Gen III small block in the F-body, it rekindled a dying performance flame with its new-generation small block. While the Gen I small block actually kick-started the hobby and got it into gear, it’s the latest family of small-block engines that has grabbed the attention of enthusiasts everywhere—and for good reason.

Choosing The Right Cam

Cam-speak is a language all its own. Well, maybe not from a linguistic point of view, but it is a specialized dialect of car-guy talk. Although spoken by a good portion of enthusiasts, Cam-speak is really fully understood by only a handful of those same enthusiasts, as it is a very specialized, nuanced dialect. Those who do not speak the lingo can instantly be singled out. Those who are fluent in cam-speak are listened to intently, even when those listening do not fully comprehend whatʼs being said and how to apply it to their particular applications. Few within our ranks are particularly fluent in this highly specialized jargon.

TPI: TODAY’S PERFORMANCE INCREASE

There are few modifications that can be made to an engine that can give both increased performance and better fuel economy. In these days of increased gasoline prices (nearly $4.50 per gallon), fuel mileage is an important consideration for vintage trucks that owners consider their daily drivers. For many reasons, vintage pickups are becoming not just weekend toys but also weekday workers. And one of the best ways to increase both performance and mileage is with an electronic fuel-injection system.

New Love for the Step Child

Ford fans will always have a soft spot in their blue-oval hearts for the Windsor, the Cleveland and the big 460 FE engines—and deservedly so. If you’ve ever crawled a junkyard for one of these engines, you’ve likely passed over more than a few 351M and 400 engines to find what you are looking for. Poor factory numbers and bad word-of-mouth have made these cousins to the mighty Cleveland about as wanted as poison ivy at a nudist colony, but there is power to be found in those engines—and cheap, too.

4/7 SWAP

We showed you how to build a small-block engine that could make over 500 hp and 500 lb-ft of torque on 87-octane gas. It was a motor that could be driven just about every day with a hydraulic-roller cam and a good carburetor, making acquisition and maintenance almost nonexistent. Like many things we do in the engine world, the results we enjoyed—while good—just weren’t satisfying anymore. We wanted more.

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