Crankshaft Adapter Sleeves

ICT Billet Crankshaft Adapter Sleeves

ICT Billet offers crankshaft adapter sleeves for a variety of applications, including many Chevy small block engine applications from 1997 and up. These steel spacers are designed to properly mate older GM transmissions (such as the TH350, TH400, 700R4, 4L60E, and Powerglide) to modern GM LS or LT series engines. * How they work: When swapping a classic transmission into an LS/LT vehicle, the engine's crankshaft has a larger center hole (pilot bore) than the torque converter's snout. The adapter sleeve slips into the rear of the crankshaft, bridging the gap to reduce the inner diameter. Key benefits: * Prevents drivetrain damage: By ensuring a tight, centered fit, it prevents the torque converter from wobbling, which protects the transmission pump and input shaft from premature wear or catastrophic failure * No modifications required: They are precision-machined to drop directly into the rear flange of the crankshaft, requiring no permanent changes to the engine or the transmission * Broad compatibility: The sleeves generally work with all Gen III, IV, and V LS and LT series engines (with the exception of some early 1999-2000 6.0L engines)

4.88 out of 5 stars ( 17 )

$31.00

—

$37.99

J.W. Performance Crankshaft Adapter Sleeves

J.W. Performance crankshaft adapter sleeves allow you to fit a transmission from another make into your crankshaft pilot. They're manufactured from high-quality steel and easily insert into the end of your crankshaft pilot with no modifications. These sleeves are available in different styles and sizes for specific applications (such as: adapting Ford engines to GM torque converters; or adapting Mopar Hemi Gen III engines to GM torque converters). Don't risk damaging the input shaft of your transmission—get ready for the track with J.W. Performance crankshaft adapter sleeves.

4.29 out of 5 stars ( 7 )

$52.46

—

$134.33

PRW Platinum Series Crank Adapter Sleeves

PRW crank adapter sleeves are designed to simplify the difficult mating of various engine types with different makes of torque converters or manual transmissions. Platinum Series connectors are crafted from lightweight aluminum to help keep your vehicle's weight minimized. Whether you're slapping a big (or small) block Ford to a GM tranny, or matching a GM torque converter to an LS engine—PRW crank adapter sleeves help you finish oddball couplings in a snap.

Not Yet Reviewed

$23.58

—

$23.99

J.W. Performance Flexplate Adapter Kits

J.W. Performance flexplate adapter kits are designed to fit your engine's crankshaft and allow for the use of a GM TH400, TH350, or a Powerglide transmission. They're ideal for drag race, Circle Track, or other forms of motorsports that rely heavily on automatic transmissions. Components are made from steel and include the longer Grade 8 mounting bolts to install your new flexplate. Order the adapter kit recommended for your application.

4.67 out of 5 stars ( 3 )

$82.22

Allstar Performance Crank Adapter Sleeves

Allstar Performance crank adapter sleeves are designed to allow use of a TH350/TH400 transmission and curved flexplate with a GM LS engine. They're easy to use. Simply insert the adapter sleeve into the crankshaft end to center the torque converter pilot with the crankshaft. The adapter sleeves are manufactured from high-quality steel and are finished in black. For racing, rodding, and street performance parts—choose Allstar!

5.0 out of 5 stars ( 2 )

$27.99

FTI Performance Crankshaft Adapter Sleeves

FTI Performance offers a wide selection of torque converter parts, including bolt kits, crank adapters, and related accessories. These crankshaft adapter sleeves will adapt GM torque converters to Ford small block or big block engines with 1.375 in. pilot. They're available for many Ford applications from the 1960s and up; and Chevy applications from the 1990s and up.

4.0 out of 5 stars ( 1 )

$29.39

TCI Pilot Extension Adapters

Considering an LS engine swap? TCI pilot extension adapters will help to make the fit a perfect match. Simply bolting the old-style converter to your LS engine will not work without the proper spacer. TCI spacers will create the required distance, so the nose of the torque converter fits properly with the crankshaft.

Not Yet Reviewed

$52.95

Advance Adapters Crankshaft Bushing Spacers

Considering an LS engine swap? Advance Adapters crankshaft bushing spacers will help to make the fit a perfect match. Simply bolting the old-style converter to your LS engine won't work without the proper spacer. These steel accessories create the required distance, so the nose of the torque converter fits with the crank. Keep your crankshaft and add one of these Advanced Adapters bushing spacers.

4.0 out of 5 stars ( 1 )

$30.10

ATI Crank Adapters

These ATI crank adapters eliminate the hours of expensive modifications necessary to mate GM transmissions with non-GM engines. Made from quality materials, these crank adapters will allow you to have the GM transmission that you've always wanted.

4.2 out of 5 stars ( 5 )

$67.00

—

$124.99

PRW Crankshaft Adapters

Fit an early design (non-LS) automatic transmission to your Gen III/IV engine with PRW crankshaft adapters. The are machined from steel and given a black surface finish.

Not Yet Reviewed

$46.08