Gwatney Performance - GM Performance Builds and Tuning

Cylinder Heads

Sale!

LS3 / L92 / L99 / LSA

Cylinder Heads

GPI – Ported LS3 / L92 / L99 / LSA Cylinder Head Package

Rated 5.00 out of 5

From: ~~$1,295.00~~ $995.00

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Sale!

LT1 / LT4 / L86

Cylinder Heads

GPI – Ported OEM LT1 / LT4 / L86 (Gen V) Cylinder Head Package

Rated 5.00 out of 5

From: ~~$1,395.00~~ $995.00

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Sale!

LS1 / LS2

Cylinder Heads

GPI – Ported OEM LS1 / LS2 Cathedral Port Cylinder Head Package

From: ~~$1,295.00~~ $995.00

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Sale!

L83

Cylinder Heads

GPI – Ported OEM L83 (Gen V 5.3 DI) Cylinder Head Package

Rated 5.00 out of 5

From: ~~$1,395.00~~ $995.00

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Sale!

LS7

Cylinder Heads

GPI – Ported OEM LS7 Cylinder Heads

~~$1,995.00~~ $1,895.00

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Camshafts

Top Seller

Camshafts

GPI – LS3 / LS2 / LS1 Cam

Rated 5.00 out of 5

$399.00

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Top Seller

Camshafts

GPI – L99 VVT Cam

Rated 5.00 out of 5

$425.00

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Top Seller

Camshafts

GPI – LT1 Cam (Gen 5)

Rated 5.00 out of 5

$425.00

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Top Seller

Camshafts

GPI – Low Lift LS Truck Camshaft (4.8L / 5.3L / 6.0L)

Rated 5.00 out of 5

$399.00

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Top Seller

Camshafts

GPI – Low Lift VVT LS Truck Camshaft L92 / L94 / L9H (6.2L)

Rated 5.00 out of 5

$425.00

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Converters

Circle D – 6L80/90 Pro Series Single Disk Converter

Rated 5.00 out of 5

$979.00

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Converters

CircleD – 8L90 Pro Series Multi Disk Converter

$1,299.00

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Converters

Circle D – 6L80/90 Pro Series Multi Disk Converter

$1,299.00

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Converters

Circle D – 6L80/90 High Performance Converter

$599.00 – $979.00

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Converters

Circle D – 4L80E Pro Series Converter

$979.00

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Brakes

New

Rear Brake Kits

Aerospace Components – 10-15 Camaro Pro Street Rear Brake Kit

$1,139.00

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New

Front Brake Kits

Aerospace Components – 10-15 Camaro Pro Street Front Brake Kit

$959.00

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New

Rear Brake Kits

Aerospace Components – 10-15 Camaro Drag Rear Brake Kit

$1,039.00

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New

Front Brake Kits

Aerospace Components – 2016+ Camaro Pro Street Front Brake Kit

Rated 5.00 out of 5

$959.00

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New

Rear Brake Kits

Aerospace Components – 2016+ Camaro Pro Street Rear Brake Kit

Rated 4.00 out of 5

$1,139.00

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Porting Services

Top Seller

Induction

GPI – LS3 Intake Manifold Mod (Radius Rod Mod / Porting)

Rated 5.00 out of 5

$275.00 – $675.00

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Intake Manifolds

OEM L86 (6.2L) Intake Manifold and Throttle Body Swap for L83 (5.3L) Trucks (2014-Up GM Truck)

Rated 5.00 out of 5

From: $350.00

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Induction

MSD – Atomic AirForce LT1 Intake Manifold PORTING SERVICE ONLY

Rated 5.00 out of 5

$300.00

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Induction

GPI – L86 Intake Manifold PORTING SERVICE ONLY

$400.00

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Induction

GPI – Factory Gen V LT1 Intake Manifold PORTING SERVICE ONLY

$275.00

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Tuning Services

Top Seller

Tuning Services

GPI – Dyno Tune Calibration Package for GM Vehicles

Rated 5.00 out of 5

$550.00

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Tuning Services

GPI – Remote Tune Calibration Package (Requires HP Tuners / EFI Live)

Rated 5.00 out of 5

$425.00

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Tuning Services

GPI – Street Tune Calibration Package for GM Vehicles

Rated 5.00 out of 5

$375.00

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Tuning Services

GPI – Remote Tune Calibration Package (Includes HP Tuners Hardware)

Rated 5.00 out of 5

From: $724.99

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Piston / Rod Combos

Top Seller

Connecting Rods

GPI – Complete Gen 5 LT1 / L86 Drop-In Piston / Connecting Rod Package (2014+ Corvette / 2016+ Camaro SS)

Rated 5.00 out of 5

$1,694.90

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Top Seller

Connecting Rods

GPI – Complete Gen 5 L83 5.3L Drop-In Piston / Connecting Rod Package (14-19 Silverado / Sierra / Tahoe / Yukon)

$1,694.90

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WHAT IS REQUIRED TO HAVE AN AFFIRM ACCOUNT?

Be 18 years or older (19 years or older in Alabama or if you’re a ward of the state in Nebraska).

Provide a valid U.S. or APO/FPO/DPO home address. Buy with Affirm is not currently available to West Virginia residents.

Provide a valid U.S. mobile or VoIP number and agree to receive SMS texts. The phone account must be registered in your name.

Provide your full name, email address, date of birth, and the last 4 digits of your social security number to help us verify your identity.

DO I HAVE A CREDIT LIMIT WITH AFFIRM?

Unlike a credit card, Affirm is not a revolving line of credit. While customers can take out multiple Affirm loans at once, each Affirm loan application is evaluated separately as a closed-end transaction. An application from a returning customer may be denied, however, if that customer has failed to repay other Affirm loans on time or if the customer shows excessive borrowing behavior.

WHY WAS I PROMPTED FOR A CHECKING ACCOUNT?

Affirm sometimes requires additional information to consider a credit application. Such information may include an active checking account, which helps Affirm verify your identity and your ability to repay the requested loan. If they prompt you for this information but you are unable to provide it, Affirm will be unable to approve your credit application.

See All FAQs

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Cam Kits

Cylinder Heads

Camshafts

Converters

Brakes

Porting Services

Tuning Services

Piston / Rod Combos

GWATNEY PERFORMANCE AND AFFIRM

CHOOSE 3, 6, OR 12 MONTHLY PAYMENTS

REAL PEOPLE, REAL SUPPORT

FREQUENTLY ASKED QUESTIONS

WHAT IS REQUIRED TO HAVE AN AFFIRM ACCOUNT?

DO I HAVE A CREDIT LIMIT WITH AFFIRM?

HOW DO I PAY MY BILLS?

DOES AFFIRM PERFORM A CREDIT CHECK?

WHY WAS I PROMPTED TO PAY A DOWN PAYMENT WITH A DEBIT CARD?

WHY WAS I PROMPTED FOR A CHECKING ACCOUNT?

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GWATNEY PERFORMANCE AND AFFIRM

CHOOSE 3, 6, OR 12 MONTHLY PAYMENTS

REAL PEOPLE, REAL SUPPORT

WHAT IS REQUIRED TO HAVE AN AFFIRM ACCOUNT?

DO I HAVE A CREDIT LIMIT WITH AFFIRM?

HOW DO I PAY MY BILLS?

DOES AFFIRM PERFORM A CREDIT CHECK?

WHY WAS I PROMPTED TO PAY A DOWN PAYMENT WITH A DEBIT CARD?

WHY WAS I PROMPTED FOR A CHECKING ACCOUNT?