Products

AMC Rambler 6-Cylinder to Chevy Automatic V8 Transmission (Kit #AMC101)
from $1,100.00

AMC Rambler 6-Cylinder to Chevy Automatic V8 Transmission (Kit #AMC101)

Speed Gems

*CALL TO ORDER* Speed Gems806H S. Division St., Waunakee, WI 53597PHONE: (763) 767-4480EMAIL:  sales@transmissionadapters.com

from $1,100.00
AP10004 - Adapter Plate Ford Modular to Chevy
$650.00

AP10004 - Adapter Plate Ford Modular to Chevy

Speed Gems

AP10004  Ford Modular to Chevy Adapter Plate

$650.00
BH10002  1957-1963 Buick Nailhead to GM 4-and 5-Speed Bellhousing
$395.00

BH10002 1957-1963 Buick Nailhead to GM 4-and 5-Speed Bellhousing

Speed Gems

This is a BRAND NEW cast-aluminum Bellhousing that will allow you to bolt a 3, 4, or 5-speed Manual Transmission to the 1957 thru 1966 Buick Nailhe...

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$395.00
BH10003  Oldsmobile & Cadillac Bellhousing
$395.00

BH10003 Oldsmobile & Cadillac Bellhousing

Speed Gems

This is a BRAND NEW cast-aluminum Bellhousing that fits Oldsmobile (1949 thru 1964) or Cadillac extended bellhousing engines (1949 thru 1954).  T...

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$395.00
BPOC101 - BOP V8 BELL/BLOCK PATTERN TO CHEVY V8 AUTOMATIC TRANSMISSION
from $265.00

BPOC101 - BOP V8 BELL/BLOCK PATTERN TO CHEVY V8 AUTOMATIC TRANSMISSION

Speed Gems

Materials Included: (1) Adapter Plate (1) Pilot Bushing(4) HCS 3/8-24 x 1-1/4(2) HCS 3/8-16 x 1-1/2(4) FHSCS 3/8-16 x 1(6) FLAT WASHER 3/8(6) LOCK ...

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from $265.00
BU1001  Buick 364 Nailhead Heavy Duty Cast-Aluminum Stick Kit
from $1,450.00

BU1001 Buick 364 Nailhead Heavy Duty Cast-Aluminum Stick Kit

Speed Gems

*Please indicate what year your engine is in the comments when ordering.1957-63 has a 2.00" Crank I/D1964-66 has a 1.70" Crank I/D*Please indicate ...

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from $1,450.00
BU1002  Buick 401 & 425 Nailhead Heavy Duty Cast-Aluminum Stick Kit
from $1,450.00

BU1002 Buick 401 & 425 Nailhead Heavy Duty Cast-Aluminum Stick Kit

Speed Gems

*Please indicate what year your engine is in the comments when ordering.1957-63 has a 2.00" Crank I/D1964-66 has a 1.70" Crank I/D*Please indicate ...

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from $1,450.00
BU101  Buick Straight-8  233/248/263 w/ orig. Manual Transmission to Chevy V8 Automatic
from $1,250.00

BU101 Buick Straight-8 233/248/263 w/ orig. Manual Transmission to Chevy V8 Automatic

Speed Gems

Note: THE TORQUE TUBE WILL NEED TO BE CONVERTED TO A MODERN DRIVESHAFT TO BE ABLE TO ADAPT TO A NEWER TRANSMISSION TAILSHAFT FLANGE OR TRANSFER CAS...

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from $1,250.00
BU201  Buick Straight-8  248/263 w/ orig. Dynaflow to Chevy V8 Automatic Transmission
from $1,250.00

BU201 Buick Straight-8 248/263 w/ orig. Dynaflow to Chevy V8 Automatic Transmission

Speed Gems

Note: THE TORQUE TUBE WILL NEED TO BE CONVERTED TO A MODERN DRIVESHAFT TO BE ABLE TO ADAPT TO A NEWER TRANSMISSION TAILSHAFT FLANGE OR TRANSFER CAS...

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from $1,250.00
BU301  Buick Straight-8  320 w/ orig. Manual Transmission to Chevy V8 Automatic
from $1,250.00

BU301 Buick Straight-8 320 w/ orig. Manual Transmission to Chevy V8 Automatic

Speed Gems

Note: THE TORQUE TUBE WILL NEED TO BE CONVERTED TO A MODERN DRIVESHAFT TO BE ABLE TO ADAPT TO A NEWER TRANSMISSION TAILSHAFT FLANGE OR TRANSFER CAS...

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from $1,250.00
BU401  Buick Straight-8  320 w/ orig. Dynaflow (w/ 3.625" crank flange) to Chevy V8 Automatic
from $1,250.00

BU401 Buick Straight-8 320 w/ orig. Dynaflow (w/ 3.625" crank flange) to Chevy V8 Automatic

Speed Gems

Note: THE TORQUE TUBE WILL NEED TO BE CONVERTED TO A MODERN DRIVESHAFT TO BE ABLE TO ADAPT TO A NEWER TRANSMISSION TAILSHAFT FLANGE OR TRANSFER CAS...

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from $1,250.00
BU501 1953-1956 Buick 264/322 Nailhead to Chevy Automatic V8 Transmission
from $925.00

BU501 1953-1956 Buick 264/322 Nailhead to Chevy Automatic V8 Transmission

Speed Gems

Materials Included: (1) Adapter Plate - Buick Nailhead to Chevy(1) Crank Adapter 1953-56 Buick 264/322 Nailhead to Chevy Auto.(1) Torque Converter ...

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from $925.00
BU601 1957-1963 Buick 364 Nailhead (w/ 2.90” crank flange) to Chevy Automatic Transmission
from $1,075.00

BU601 1957-1963 Buick 364 Nailhead (w/ 2.90” crank flange) to Chevy Automatic Transmission

Speed Gems

Materials Included: (1) Adapter Plate - Buick Nailhead to Chevy(1) Crank Adapter-Inner(1) Crank Adapter-Outer(1) Torque Converter Drive Plate(1) Fl...

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from $1,075.00
BU602 1957-1963 Buick 401/425 Nailhead (w/ 2.90" crank flange) to Chevy Automatic Transmission
from $1,075.00

BU602 1957-1963 Buick 401/425 Nailhead (w/ 2.90" crank flange) to Chevy Automatic Transmission

Speed Gems

Materials Included: (1) Adapter Plate - Buick Nailhead to Chevy(1) Crank Adapter-Inner(1) Crank Adapter-Outer(1) Torque Converter Drive Plate(1) Fl...

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from $1,075.00
BU701 1964-1966 Buick 401/425 Nailhead to Chevy Automatic V8 Transmission W/ Large Hole Flexplate
from $925.00

BU701 1964-1966 Buick 401/425 Nailhead to Chevy Automatic V8 Transmission W/ Large Hole Flexplate

Speed Gems

Materials Included: (1) Adapter Plate - Buick Nailhead to Chevy(1) Crank Adapter-1964-66 Buick 401/425 Nailhead to Chevy Auto.(1) Torque Converter ...

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from $925.00
BU702 1964-1966 Buick 401/425 Nailhead to Chevy Automatic V8 Transmission (w/ small-hole Flexplate)
from $1,075.00

BU702 1964-1966 Buick 401/425 Nailhead to Chevy Automatic V8 Transmission (w/ small-hole Flexplate)

Speed Gems

Materials Included: (1) Adapter Plate - Buick Nailhead to Chevy(1) Crank Adapter-1964-66 Buick 401/425 Nailhead to Chevy Auto.(1) Torque Converter ...

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from $1,075.00
BU801  Buick Flexplate and Adapter for 1963 & Older Buick 364 to 1964 & Newer Automatic Transmission
from $179.00

BU801 Buick Flexplate and Adapter for 1963 & Older Buick 364 to 1964 & Newer Automatic Transmission

Speed Gems

Materials Included: (1) Buick Tapered Pilot Bushing (PB10009)(1) Flexplate (FP10003)(1) 166W-tooth Ring-gear (RG10004)(1) Balance Weight for Buick ...

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from $179.00
BU802  Buick Flexplate and Adapter for 1963 & Older Buick 401/425 to 1964 & Newer Automatic Transmission
from $179.00

BU802 Buick Flexplate and Adapter for 1963 & Older Buick 401/425 to 1964 & Newer Automatic Transmission

Speed Gems

Materials Included: (1) Buick Tapered Pilot Bushing (PB10009)(1) Flexplate (FP10003)(1) 166W-tooth Ring-gear (RG10004)(1) Balance Weight for Buick ...

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from $179.00
CA101 1954-63 CADILLAC 365/390 OR “FLAT-BACK” BLOCK STYLE 331 TO CHEVY AUTOMATIC V8 TRANSMISSION
from $1,100.00

CA101 1954-63 CADILLAC 365/390 OR “FLAT-BACK” BLOCK STYLE 331 TO CHEVY AUTOMATIC V8 TRANSMISSION

Speed Gems

Materials Included:  (1) Adapter Plate - 1954 & up Cadillac to Chevy Automatic(1) Crank Adapter(1) High Torque mini-Starter(2) HCS 3/8-16 x 3-3...

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from $1,100.00
CA102 1954-63 CADILLAC 365/390 OR “FLAT-BACK” BLOCK STYLE 331 TO CHEVY MANUAL TRANSMISSION
from $1,450.00

CA102 1954-63 CADILLAC 365/390 OR “FLAT-BACK” BLOCK STYLE 331 TO CHEVY MANUAL TRANSMISSION

Speed Gems

*This kit includes everything you will need to mate your 365 or 390 to a manual transmission. There is no need to buy additional parts when you ord...

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from $1,450.00
CA201 1942-1948 Cadillac 346 Flathead w/Hydra-matic to Chevy Automatic V8 Transmission
from $1,350.00

CA201 1942-1948 Cadillac 346 Flathead w/Hydra-matic to Chevy Automatic V8 Transmission

Speed Gems

*This kit will only fit the 346-Cadillac Engine that originally had a Hydra-matic Transmission.   Materials Included: (1) Adapter Plate-Inner - Cad...

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from $1,350.00
CA401 1949-54 CADILLAC 331 W/ “EXTENDED BELLHOUSING” BLOCK STYLE TO CHEVY AUTOMATIC V8 TRANSMISSION
from $1,650.00

CA401 1949-54 CADILLAC 331 W/ “EXTENDED BELLHOUSING” BLOCK STYLE TO CHEVY AUTOMATIC V8 TRANSMISSION

Speed Gems

Materials Included: (1) Adapter Plate - Olds/Cadillac 1949-1964 to Chevy(1) Crank Adapter - Olds/Cadillac 1949-1964 to Chevy(1) Torque Converter Dr...

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from $1,650.00
CA501 1949-54 CADILLAC 331 W/ “EXTENDED BELLHOUSING” BLOCK STYLE TO CHEVY MANUAL
from $1,650.00

CA501 1949-54 CADILLAC 331 W/ “EXTENDED BELLHOUSING” BLOCK STYLE TO CHEVY MANUAL

Speed Gems

Materials Included: (1) Bell Housing - 1949 Old/Cad to Chevy Manual(1) Flywheel(1) Starter(1) Starter Block - Multiple Olds/Cadillac applications(1...

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from $1,650.00
CA601  Cadillac 429 to 700R4
$750.00

CA601 Cadillac 429 to 700R4

Speed Gems

Materials Included: (1) Adapter Plate - Cadillac 429 to Chevy 700R4(1) Torque Converter Spacer(1) Pilot Bushing - Cadillac 429 to 700R4(2) Dowel Pi...

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$750.00
CH301  Chevy 216/235/261 to Chevy V8-Style Transmission
from $950.00

CH301 Chevy 216/235/261 to Chevy V8-Style Transmission

Speed Gems

Call us for order details +1(763) 767-4480 Materials Included:  (1) ADAPTER PLATE, CHEVY IN-6 TO CHEVY V8 AT(2) SHCS, ¼-28 X 1-1/2 (6) FHCS, 7/16-...

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from $950.00
CH401 CHEVY LS1 TO CHRYSLER NAG1/A580/W5A580
$1,500.00

CH401 CHEVY LS1 TO CHRYSLER NAG1/A580/W5A580

Speed Gems

Materials Included: (1) Adapter plate - Dodge to Chevy(1) Flexplate Adapter(1) Top steel bar Assembly(2) FHSCS 3/8-16 x 1-1/2(4) FHSCS 5/16-18 x 1(...

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$1,500.00
CH701  LS to Cadillac 429 Transmission
$1,150.00

CH701 LS to Cadillac 429 Transmission

Speed Gems

Materials Included: (1) Adapter Plate - LS to Cadillac 429(2) Dowel Pin .625 x 2.50*Mounting Hardware *CALL TO ORDER* Speed Gems806H S. Division S...

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$1,150.00
DO101  Dodge Hemi w/ NAG1 to Chevy Automatic Transmission
from $1,350.00

DO101 Dodge Hemi w/ NAG1 to Chevy Automatic Transmission

Speed Gems

*This Kit allows for using the original factory starter in the stock location, while retaining the factory flexplate, and doesn't require any bloc...

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from $1,350.00
DO102  Dodge Hemi 45RFE to Chevy Automatic Transmission
from $1,350.00

DO102 Dodge Hemi 45RFE to Chevy Automatic Transmission

Speed Gems

*This Kit allows for using the original factory starter in the stock location, while retaining the factory flexplate, and doesn't require any bloc...

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from $1,350.00
DO103  Designed Specifically for the Dodge Hemi Hellcat 6.2L & 6.4L to Chevy 4L80E/Automatic Transmission
from $1,350.00

DO103 Designed Specifically for the Dodge Hemi Hellcat 6.2L & 6.4L to Chevy 4L80E/Automatic Transmission

Speed Gems

*This Kit allows for using the original factory starter in the stock location, while retaining the factory flexplate, and doesn't require any bloc...

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from $1,350.00
EC101  ECOTEC Naturally Aspirated (i.e. Olds Alero) to Chevy Automatic Transmission (700R4/TH350/TH400)
from $1,100.00

EC101 ECOTEC Naturally Aspirated (i.e. Olds Alero) to Chevy Automatic Transmission (700R4/TH350/TH400)

Speed Gems

Materials Included: (1) Adapter Plate - ECOTEC to Chevy(1) Crank Adapter(1) Torque Converter Drive Plate(2) SHCS M12-1.75 x 35(4) SHCS M12-1.75 x 5...

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from $1,100.00
EC102  ECOTEC Supercharged or Turbo to Chevy Automatic Transmission (700R4/TH350/TH400)
from $1,350.00

EC102 ECOTEC Supercharged or Turbo to Chevy Automatic Transmission (700R4/TH350/TH400)

Speed Gems

Materials Included: (1) Adapter Plate - ECOTEC to Chevy(1) Crank Adapter-ECOTEC Turbo/Supercharged to Chevy(1) Torque Converter Drive Plate(1) Torq...

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from $1,350.00
EC201  ECOTEC LTG and LCV (2013 & newer) to Chevy Automatic Transmission
from $1,450.00

EC201 ECOTEC LTG and LCV (2013 & newer) to Chevy Automatic Transmission

Speed Gems

*CALL TO ORDER* Speed Gems806H S. Division St., Waunakee, WI 53597PHONE: (763) 767-4480EMAIL:  sales@transmissionadapters.com *This Kit is designe...

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from $1,450.00
FO1001  Ford 239/252/272/292/312  "Y" - Block to Chevy Automatic Transmission
$1,100.00

FO1001 Ford 239/252/272/292/312 "Y" - Block to Chevy Automatic Transmission

Speed Gems

Materials Included: (1) Adapter plate - Ford 239 Y block to Chevy(1) Crank Adapter - Ford 239 Y block to Chevy automatic transmission(1) Top steel ...

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$1,100.00
FO101  Ford 351M/400 to Ford Small Block AOD
$1,050.00

FO101 Ford 351M/400 to Ford Small Block AOD

Speed Gems

Note: This kit will also work for a C5, C6. If you plan on using a C4, be sure that you have the larger 164 tooth flexplate style bellhousing (F...

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$1,050.00
FO102  Ford 429/460 to Ford AOD
$1,050.00

FO102 Ford 429/460 to Ford AOD

Speed Gems

Note: This kit will also work for a C5, C6. If you plan on using a C4, be sure that you have the larger 164 tooth flexplate style bellhousing (For...

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$1,050.00
FO1101  Ford Model A/B to Chevy Automatic Transmission
$1,650.00

FO1101 Ford Model A/B to Chevy Automatic Transmission

Speed Gems

Materials Included:  (1) Adapter plate - Ford Model A to Chevy auto(1) Crank Adapter - Ford model A/B to Chevy automatic transmission(1) Flexplate(...

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$1,650.00
FO1201  1949-1953 Ford Flat-Head to Ford Automatic Transmission
$1,250.00

FO1201 1949-1953 Ford Flat-Head to Ford Automatic Transmission

Speed Gems

Materials Included: (1) Ford Flathead to C4 adapter kit (1) Flexplate(1) Starter snout(1) Block plate(1) Starter   *Matching our adapter kits with ...

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$1,250.00
FO1301  Ford 223 6-cylinder to Ford AOD
$1,250.00

FO1301 Ford 223 6-cylinder to Ford AOD

Speed Gems

Note: This kit will also work for a C5, C6. If you plan on using a C4, be sure that you have the larger 164 tooth flexplate style bellhousing (For...

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$1,250.00
FO1401  Ford Modular to Dodge Hemi Transmission
$1,350.00

FO1401 Ford Modular to Dodge Hemi Transmission

Speed Gems

Materials Included:  (1) Adapter Plate - Ford Modular (1) Torque converter spacer(1) Inspection Cover (1) Starter Shim (2) SHCS M10-1.5 X 45 P LOW ...

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$1,350.00
FO1501  Ford 2300 4-cylinder to Chevy V8-Style Automatic Transmission
$1,100.00

FO1501 Ford 2300 4-cylinder to Chevy V8-Style Automatic Transmission

Speed Gems

Materials Included: (1) Adapter plate - Ford 2300 4 cyl to Chevy V8 (1) Crank Adapter - Ford 2300 4 Cyl to Chevy V8 style automatic transmission(1)...

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$1,100.00
FO1601  Ford Small Block to early Transmission (1948 & older)
$950.00

FO1601 Ford Small Block to early Transmission (1948 & older)

Speed Gems

This TRANSMISSION ADAPTER KIT will allow for any Ford engine (i.e. - 240 / 300 straight-6, 250 straight-6, 289, 302, 351W, 351C engines) with a Sma...

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$950.00
FO1602  Ford Small Block to early Transmission (1948 & older) - INCLUDES Flywheel & Starter
$1,350.00

FO1602 Ford Small Block to early Transmission (1948 & older) - INCLUDES Flywheel & Starter

Speed Gems

Materials Included: (1) BH10001 Bell Housing - Small Block Ford to Early Transmission (1948 and older)(1) BP10002 Block Plate - 6 bolt - small blo...

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$1,350.00
FO1701 Ford Y-block Pickup Truck Complete Crossmember Kit
$475.00

FO1701 Ford Y-block Pickup Truck Complete Crossmember Kit

Speed Gems

Materials Included:  (1) Transmission crossmember(2) Removable crossmember (2) "L" Bracket(1) "S" Bracket Right(1) "S" Bracket Left (1) Moog link k...

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$475.00
FO1801 Ford Modular Engine to Chevy LS1-350
$1,350.00

FO1801 Ford Modular Engine to Chevy LS1-350

Speed Gems

Materials Included:  (1) Adapter plate Ford modular to Chevy(1) Torque converter spacer - Ford Modular Engine to Chevy 700R4/4L80E(2) SHCS M10-1.5 ...

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$1,350.00
FO1901 Ford Y-Block to SBF and Modular Manual Transmission
from $1,450.00

FO1901 Ford Y-Block to SBF and Modular Manual Transmission

Speed Gems

Materials Included: (1) Adapter plate - Ford/Linc/Merc to Ford(1) Crank Adapter - Ford 223 Inline 6 or 239 "Y" block to Ford AOD(1) Inspection Cove...

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from $1,450.00
FO2001 Ford FE to SBF Manual Transmissions
$1,450.00

FO2001 Ford FE to SBF Manual Transmissions

Speed Gems

Materials Included: (1) Adapter plate - Ford/Linc/Merc to Ford(1) Crank Adapter - Ford FE to Ford AOD(1) Inspection Cover - Ford (most) (1) Flywhee...

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$1,450.00
FO201 Ford FE 352/360/390/406/427 to Ford AOD
from $1,250.00

FO201 Ford FE 352/360/390/406/427 to Ford AOD

Speed Gems

Note: This kit will also work for a C5, C6. If you plan on using a C4, be sure that you have the larger 164 tooth flexplate style bellhousing (For...

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from $1,250.00