Where to Buy a 350 Chevy Crate Engine: Base, Turnkey and Stage Options

A chevy 350 crate motor is the highest-volume single displacement in the small-block Chevy lineup, and it’s stocked here from three different builders at three very different configuration levels.

This guide covers where to buy a 350 crate engine across those three builders, what actually separates a base long block from a turnkey or Stage 1 build, and one spec gap worth knowing about before you order.

UniversalEngineParts.com is an independent parts retailer. Chevrolet Performance, BluePrint Engines and ATK High Performance are trademarks of their own companies.

In This Guide

• Where to buy a 350 crate engine: what’s in stock
• Base vs. turnkey vs. Stage 1: what you’re actually buying
• Check fit before you order
• Featured in-stock models
• A gap worth knowing about
• Warranty and shipping, briefly
• Common mistakes buyers make
• When to get help before you buy
• Tell us about your build
• FAQs

Where to Buy a 350 Chevy Crate Engine: What’s in Stock

Three 350 crate engine for sale listings cover this displacement here, each from a different builder and at a different finish level: a Chevrolet Performance base long block, a BluePrint 350 crate engine with aluminum heads, and an ATK Stage 1 build.

You can browse the full crate engines category and filter by price and stock status. If price is your main filter, our what a 350 crate engine costs post breaks down what drives the spread between these three; this guide stays focused on where to buy and what you’re getting for it. For how 350 compares to 383 and the other small-block displacements, see our small-block Chevy crate engine guide.

Base vs. Turnkey vs. Stage 1: What You’re Actually Buying

“350” tells you the displacement, not the finish level, and the gap between these three builds is bigger than it looks on a spec sheet.

Base long block is the bare engine: block, heads, crank, rods, pistons, cam, and valvetrain, with no intake, carburetor, ignition or accessories. You supply and tune the rest. This is the lowest-cost entry point, but also the most assembly work before it runs.

Turnkey means exactly what it sounds like: intake, carburetor or EFI, ignition, and accessories installed, so it starts and runs with minimal additional work. A turnkey chevy 350 crate motor costs more than a base long block of the same displacement, but that premium buys assembled, tested completeness.

Stage 1 sits between the two in most builders’ lineups: a long block with a mild performance upgrade (heads, cam, or both) over the bone-stock base, still typically sold without a full accessory package.

If you’re building a 350 small block crate engine for a daily driver, the assembly time a base long block demands is worth weighing against a turnkey’s higher price before you decide.

Check Fit Before You Order

Even within one displacement and one general finish level, oil pan style, balance (internal vs. external), and accessory bracket pattern vary by builder and by part number.

Run the specific part number through the site’s own Compatibility Check tool before you order, even if 350s are familiar territory.

Featured In-Stock Models

Three current listings illustrate the base, dressed, and Stage 1 options.

Chevrolet Performance 350 base long block (19432780)

A factory-sealed base long block from GM’s own Chevrolet Performance division. Chevrolet’s own official page for the 350 HO family lists a horsepower figure only for the dressed Turn-Key version (19433031, at 333 hp @ 5,100 rpm); it does not publish a horsepower rating for this bare base long block, since the figure depends on the intake, carburetor and ignition a base engine ships without. Don’t assume this part matches the Turn-Key’s rating.

BluePrint GM 350 390 HP long block (BP3505CT)

A 350 crate engine with aluminum heads from BluePrint. BluePrint’s own official page confirms “350 c.i.” and “390 Horsepower” for this part number, though it doesn’t publish a torque figure.

ATK GM 350 390 HP Stage 1 (HP89)

A Stage 1 build with aluminum heads and a hydraulic roller cam. ATK’s own official page confirms “390 HP” and “420 lb-ft” of torque at 350 cubic inches, and lists the cam specs (220/224 duration at .050″) and recommended intake and carburetor used to achieve that figure.

Current pricing, exact included accessories and stock status are shown on each product page rather than reproduced here, since all three change over time, and our 350 crate engine cost guide covers the price spread between them in detail.

A Gap Worth Knowing About

This one isn’t a conflict between sources so much as a gap: Chevrolet’s own page for the 350 HO family only publishes a horsepower and torque figure for the Turn-Key configuration, not for the bare base long block UEP sells under 19432780.

That’s expected, not a red flag. A base long block ships without the intake, carburetor and ignition that a dyno number depends on, so there’s no finished-engine figure to publish for it. But it does mean you can’t compare this part number’s “power” against the BluePrint or ATK listings above on a spec sheet; those two come with a published number because they ship closer to complete.

If you need a specific, documented horsepower figure for budgeting or a build sheet, the BluePrint and ATK options above both have one from the manufacturer. The Chevrolet Performance base long block is the right pick when you’re building your own combination and don’t want GM’s choices baked in, not when you need a guaranteed number out of the box.

Warranty and Shipping, Briefly

Warranty terms differ by builder, and this is one of the few posts here mixing all three: BluePrint Engines, Chevrolet Performance, and ATK High Performance. Our warranty information page and the crate engine hub guide cover BluePrint’s and Chevrolet Performance’s terms in full, including a known disagreement between UEP’s stated BluePrint term and BluePrint’s own published term. ATK’s specific coverage isn’t broken out in that same comparison yet, so confirm it directly with support or on the HP89 product page before you order.

Crate engines ship as palletized freight, with published US and Canada delivery windows of 7 to 14 business days, quoted at checkout based on weight and destination. Full steps are on the shipping information page.

Common Mistakes Buyers Make

• Assuming a base long block will perform like the dressed or turnkey version of the same displacement.
• Budgeting for a 350 without pricing the intake, carburetor, and ignition a base long block doesn’t include.
• Comparing horsepower across builders without checking whether the figure is published for the exact part number, not just the family.
• Skipping the compatibility check because “it’s just a 350.”
• Not confirming balance (internal vs. external) before ordering a flywheel, flexplate, or balancer separately.

When to Get Help Before You Buy

If you’re deciding between a base long block, a turnkey build, or a Stage 1 upgrade, it’s worth asking before you order.

Use the Compatibility Check page for a fast fit check, or Contact Us with a specific question.

Tell Us About Your Build

Builders know things no spec sheet does. Answer any of these in the comments to help other readers of this guide.

• Did you go base, turnkey, or Stage 1, and why?
• If you bought a base long block, what did the rest of the build end up costing?
• Did the horsepower or torque you measured match the published figure?
• What’s the one thing you wish you’d confirmed before ordering?

Share what you can, and we’ll join in with general guidance. Please don’t post personal contact details or payment information.

Before You Go

Not sure whether a base long block, turnkey, or Stage 1 350 fits your build? Send us your vehicle and intended use, and we’ll help you compare the real total cost, not just the sticker price.

• Browse the full crate engines category by price and stock status
• Read what a 350 crate engine costs before you compare prices
• Run a Compatibility Check before you order
• Contact our team with any fitment or warranty questions

The more detail you send, the faster we can help you choose.

UniversalEngineParts.com is independent and is not affiliated with, endorsed by or sponsored by Chevrolet Performance, General Motors, BluePrint Engines, or ATK High Performance. Each brand name is a trademark of its respective owner, used here only to identify the engines we sell. Specifications cited from manufacturers’ own pages reflect that part number at the time of writing and may not match every variant; always confirm against the current product page before ordering.

Where to Buy a 350 Crate Engine: FAQs

Where can I buy a 350 Chevy crate engine online?

Universal Engine Parts lists a 350 crate engine for sale from three builders, Chevrolet Performance, BluePrint Engines, and ATK High Performance, at base, dressed, and Stage 1 finish levels, so you can compare before you check fit and order.

What’s the difference between a base and a turnkey 350 crate engine?

A base long block is the bare engine with no intake, carburetor, ignition or accessories; a turnkey 350 crate engine comes assembled and tested with those components installed, so it starts and runs with minimal additional work.

Why doesn’t Chevrolet publish a horsepower figure for the base long block?

A finished horsepower figure depends on the intake, carburetor and ignition installed, which a bare base long block doesn’t include. Chevrolet publishes a figure for the dressed Turn-Key version of the 350 HO family, not the base long block.

Is a 350 crate engine with aluminum heads worth the extra cost over cast iron?

Aluminum heads reduce weight over the front axle and can improve airflow, but the BluePrint and ATK listings here already specify which heads come standard; check the specific product page rather than assuming.

What’s the difference between a Stage 1 and a base 350 crate engine?

Stage 1 typically adds a mild performance upgrade, such as better heads or a cam, over the bone-stock base configuration, while still usually shipping without a full accessory package like a true turnkey build.

How much does a 350 crate engine cost?

Price varies significantly by builder and finish level; our dedicated cost guide breaks down what drives the spread between base, dressed and turnkey options.

Can you help me pick between base, turnkey and Stage 1 for my build?

Yes. Send us your vehicle and intended use through a Compatibility Check or Contact Us, and we’ll help you compare the real total cost of each option, not just the sticker price.