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Get Better Performance from Your Conversion Swap Parts

G Force Performance is the leading source for a crossmember or other primary component for a transmission swap or conversion. We are your conversion component source for LS, LT, SBC, or Cummins conversion components.

We're proud to say that about 90% of our products are Made in the USA.

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TECH TIPS

    Cummins Conversion Adapter Kits by G Force Performance
    Patent Pending Mock Up Block  by G FORCE PERFORMANCE
    G Force Billet Fox Body Crossmember on Stacey David's Gearz.avi
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We now have Partner Brands

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Patent Pending Mock Up Swap block™

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THE ORIGINAL LIGHTWEIGHT STEEL SWAP BLOCK

Engineered for car enthusiasts and professionals working on conversion and engine swap projects, our innovative lightweight steel swap blocks guarantee engine fitment precision. They're a game-changer when working on unweildy engine swaps. Motor mounts, oil pan, water pump, headers, and other accessories and bolt-ons are easily mocked-up.

Currently available for LS, LT, SBC, BBC, Ford Godzilla 7.3L, and Cummins 4BT or 6BT engines, these patent-pending engine block templates are precision-formed to create a very strong, rigid structure, which is perfect for achieving the alignment you need.

We've also added Swap Block Transmission Mock Ups for a 6L80E/6L90E or TR6060 transmission.

We're constantly adding Swap Blocks for different engines and transmissions. Follow us @GForcePerformance Products on Instagram, Facebook, and YouTube for the latest new product announcements.

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G Force Performance Products More Precision Homepage section background

THE ORIGINAL LIGHTWEIGHT STEEL SWAP BLOCK

Engineered for car enthusiasts and professionals working on conversion and engine swap projects, our innovative lightweight steel swap blocks guarantee engine fitment precision. They're a game-changer when working on unweildy engine swaps. Motor mounts, oil pan, water pump, headers, and other accessories and bolt-ons are easily mocked-up.

Currently available for LS, LT, SBC, BBC, Ford Godzilla 7.3L, and Cummins 4BT or 6BT engines, these patent-pending engine block templates are precision-formed to create a very strong, rigid structure, which is perfect for achieving the alignment you need.

We've also added Swap Block Transmission Mock Ups for a 6L80E/6L90E or TR6060 transmission.

We're constantly adding Swap Blocks for different engines and transmissions. Follow us @GForcePerformance Products on Instagram, Facebook, and YouTube for the latest new product announcements.

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Our Performance Products Make Easy Work of Your Swap

Z32 Transmission To LS | 5 Speed Transmission Adapter Kit

Z32/Z33 LS Adapter Kits Z32/Z33 LS Adapter Kits Learn More

Z32 300zx transmission adapter kit with adapter plate, flywheel, pilot bushing adapter, and bolt kit

Z32/Z33 LT Adapter Kits Z32/Z33 LT Adapter Kits Learn More

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Cummins Swap Kits Cummins Swap Kits Learn More

1984-1995 Mustang to SBC Full Kit- Third Generation | GF-CM-PK-C

Mustang SBC Kits Learn More

G Force Transmission Crossmember

When you opt for a G Force crossmember, we assure you a seamless bolt-to-frame fit comparable to your factory transmission crossmember. The patented double-hump profile accommodates large exhaust diameters, eliminating the need to alter the crossmember to accommodate them. No cutting or welding ensures a hassle-free installation. Additionally, each crossmember comes with easy-to-follow installation instructions and mounting hardware.

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USE OUR CD009 TRANSMISSION ADAPTER TO SAVE ON YOUR LS SWAP

If you're eager to experience the thrill of shifting through the gears in your LS swap but prefer not to break the bank with a T56 transmission, the G Force CD009 transmission adapter is the solution you've been searching for. The CD009 transmission offers seamless gear shifts while efficiently transferring power to the wheels. Plus, our adapter kit simplifies the installation process behind your LS engine!

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Performance Engineered from Start to Finish

G Force Performance Products exclusively manufactures G Force transmission crossmembers, swap blocks, motor mounts, transmission mounts,  suspension components, and more. Our company focuses on crafting premium parts that help automotive enthusiasts achieve their objectives.

Our team of engineers remains committed to the pursuit of groundbreaking designs and upholding our reputation for delivering durable and reliable parts. We are dedicated to an exceptional customer experience from purchase to installation and beyond. We encourage you to consider G Force Performance Products' remarkable aftermarket parts.

Let customers speak for us

from 349 reviews
Ellis Roman
1975-1981 F-Body & 1975-1979 X-Body Crossmember | RCF2L-700
1977 Chevy Nova 4L60E upgrade with G-force Crossmember

The product came well package, Directions were via QR Code and easy to understand. The install was simple and flawless. Looks great and works a designed.

Arthur Gadson
1975-1981 F-Body & 1975-1979 X-Body Crossmember | RCF2L-4L80
75 Camaro project

Haven't installed yet, but it's a quality product from what I can see.This is my second crossmember front GFORCE.

Richard Reese
Standard Height Polyurethane Transmission Mount | GMTM
G Force Performance Transmission Mount

G Force Performance Transmission Mount is made of great quality and is really strong. I definitely will buy with them again for my next project!!

E. Daugherty
Z33 6 Speed Transmission-CD009 LS Engine Adapter & Flywheel | GF-LSZ33-S
Ordered, Installed, Street Driven, Track Tested, and Satisfied

We went with this kit because we didn't have to cut the bell housing, the cost, and overall ease of installation. The kit was purchased a couple of years ago and we have finally been able to give it a good track day. We drove the car around town between 750-1000 miles. There was not an issue. At the beginning of this month we took it to the track, everything operated as it should have. We believe that this was a good purchase and worth the money. Easy solution to a simple problem, getting a good, reliable, inexpensive, transmission to a good, reliable, inexpensive, engine. Simple is better, in this case.

Adam Celani
LS Cam Bearing Tool and Bore Extender Fixture | GF-CBTEXT-COMBO

LS Cam Bearing Tool and Bore Extender Fixture | GF-CBTEXT-COMBO

Victor Liggeri
1975-1981 F-Body & 1975-1979 X-Body Crossmember | RCF2L-4L80
1975-1981 F-Body & 1975-1979 X-Body Crossmember | RCF2L-4L80?

Perfect fit and arrived 48 hours after I ordered it. Very happy with my purchase

Steven Jabs
1978-1983 Malibu, Monte Carlo, El Camino, Cutlass, Grand Prix, Regal Frame Extension | GF-FE100
Brace extension

Part worked perfect thank you

Bret Eliezer
Swap Block 8HP70 Transmission Mock Up | GF-MUT-8HP70
Key to success

These swap blocks are just fantastic. Besides making the obvious easier, getting initial measurements, ability to build directly off of them, weld near them (unlike the poly+ foam competitors), it makes the entire mock up so much easier. Simply fantastic

scott mock
Upgraded LSA Supercharger Belt Drive System | GF-LSA-AB
Frt LSA drive kit

The parts fit & worked perfectly. I'm super happy with the product and pricing. Better fit & lower pricing than GM oem pcs.

Drew
1968-1980 C3 Corvette Crossmember | RCC3-350
1980 Corvette

Fit great and looked amazing on my ‘80 Corvette. Plus plenty of extra clearance for my custom exhaust. Very pleased with it!

Zachary McClellan
2004-2006 Pontiac GTO Crossmember TH400 | RCV4-400
Gto th400 crossmember

Great product! Bolted right on with no issues, highly recommended if doing a th400 swap.

Joshua Atkinson
LS To AR5 Transmission Adapter Kit | GF-LSAR5-KIT
Great product

This was a good quality product with clean edges and priced very good. All hardware is good. Installed perfectly.

Jim
LS To AR5 Transmission Adapter Kit | GF-LSAR5-KIT
Happy about part.

Everything fit good and it was fast delivery.

Josh Jankovic
1968-1972 A-Body Convertible or Boxed Frame Crossmember | RCAEC2

Perfect fit every time strong and look great under the car will always buy g force crossmembers for all my cars and trucks

Maus uden
Swap Block™ Mock Up LS Engine Block | GF-EJ-LS-DIY
mock up LS

all good , fast delivery ,

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