Products

312-350 FORD Y-BLOCK TO CHEVY V8 AUTO
$700.00

312-350 FORD Y-BLOCK TO CHEVY V8 AUTO

Speed Gems

Materials Included(1) ADAPTER PLATE(1) CRANK SPACER(1) FLEXPLATEHARDWARE   *Matching our adapter kits with your engine can be tricky, please email ...

View full details
$700.00
318-350 LA SMALL BLOCK MOPAR TO CHEVY V8 AUTO
$700.00

318-350 LA SMALL BLOCK MOPAR TO CHEVY V8 AUTO

Speed Gems

Materials Included(1) ADAPTER PLATE(1) CRANK SPACER(1) FLEXPLATEHARDWARE   *Matching our adapter kits with your engine can be tricky. If you are un...

View full details
$700.00
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

Customers are responsible for throttle position signal provisions. Check out US Shifts options for TPS Kits.   Speed Gems806H S. Division St., Waun...

View full details
from $1,100.00
bellhousings
$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...

View full details
$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...

View full details
$395.00
BPOC101 - BOP V8 BELL/BLOCK PATTERN TO CHEVY V8 AUTOMATIC TRANSMISSION
from $250.00

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 ...

View full details
from $250.00
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 ...

View full details
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 ...

View full details
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...

View full details
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...

View full details
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...

View full details
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...

View full details
from $1,250.00
Buick 264/322 Nailhead
from $1,150.00

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 ...

View full details
from $1,150.00
BU601 1957-1963 Buick 364 Nailhead (w/ 2.90” crank flange) to Chevy Automatic Transmission
from $1,150.00

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...

View full details
from $1,150.00
BU602 1957-1963 Buick 401/425 Nailhead (w/ 2.90" crank flange) to Chevy Automatic Transmission
from $1,150.00

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...

View full details
from $1,150.00
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 ...

View full details
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 ...

View full details
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 ...

View full details
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 ...

View full details
from $179.00
CA101 1954-63 CADILLAC 365/390
from $1,250.00

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...

View full details
from $1,250.00
CA102 1954-63 CADILLAC 365/390 OR “FLAT-BACK” BLOCK STYLE 331 TO CHEVY MANUAL TRANSMISSION
$1,650.00

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...

View full details
$1,650.00
OL301 1949-1956 Oldsmobile 303/324
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...

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

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

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...

View full details
from $1,650.00
CA601 CADILLAC 429 W/ ENGINE BLOCK MOUNTED STARTER TO CHEVY V8 AUTOMATIC TRANSMISSION
from $750.00

CA601 CADILLAC 429 W/ ENGINE BLOCK MOUNTED STARTER TO CHEVY V8 AUTOMATIC TRANSMISSION

Speed Gems

Materials Included: ***IF YOU HAVE A 1964 ENGINE W/ A BELLHOUSING MOUNTED STARTER, EMAIL US FOR DETAILS BEFORE PURCHASING OR CONTINUING*** (1) Adap...

View full details
from $750.00
CA701 64 Cadillac 429 (TH400 Style) to Hydramatic (59-64) 4 speed Transmission
$90.00

CA701 64 Cadillac 429 (TH400 Style) to Hydramatic (59-64) 4 speed Transmission

Speed Gems

Materials Included (1) FS10002 1964 CAD Crank Spacer to Hydro (2) DP10001 0.620x1.00 Dowel Pin This kit is designed to adapt your 1964 Cadillac 429...

View full details
$90.00
CH301 CHEVY STOVEBOLT STRAIGHT-6 (216/235/261) TO CHEVY V8 AUTOMATIC TRANSMISSION (700R4)
from $1,150.00

CH301 CHEVY STOVEBOLT STRAIGHT-6 (216/235/261) TO CHEVY V8 AUTOMATIC TRANSMISSION (700R4)

Speed Gems

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

View full details
from $1,150.00
CH401 DODGE HEMI W/ NAG1 TO CHEVY LS1 AUTOMATIC TRANSMISSION
$1,500.00

CH401 DODGE HEMI W/ NAG1 TO CHEVY LS1 AUTOMATIC TRANSMISSION

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(...

View full details
$1,500.00
CH501 STARTER PLATE KIT FOR 1955-56 CHEVY V8 TO LATE MODEL TRANSMISSION
$225.00

CH501 STARTER PLATE KIT FOR 1955-56 CHEVY V8 TO LATE MODEL TRANSMISSION

Speed Gems

Materials Included:  (1) Adapter Plate  (1) Hardware Kit Please Note: WILL ALSO WORK IN LATE MODEL APPLICATIONS WHERE THE STARTER MOUNTING THREADS...

View full details
$225.00
DO101  Dodge Hemi w/ NAG1 to Chevy Automatic V8 Transmission
from $1,375.00

DO101 Dodge Hemi w/ NAG1 to Chevy Automatic V8 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 block...

View full details
from $1,375.00
DO102  Dodge Hemi 45RFE to Chevy Automatic V8 Transmission
from $1,375.00

DO102 Dodge Hemi 45RFE to Chevy Automatic V8 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 block...

View full details
from $1,375.00
DO103  Designed Specifically for the Dodge Hemi Hellcat 6.2L & 6.4L to Chevy 4L80E/Automatic Transmission
from $1,375.00

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 block...

View full details
from $1,375.00
EC101  ECOTEC Naturally Aspirated (i.e. Olds Alero) to Chevy Automatic V8 Transmission (700R4/TH350/TH400)
from $1,250.00

EC101 ECOTEC Naturally Aspirated (i.e. Olds Alero) to Chevy Automatic V8 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...

View full details
from $1,250.00
EC102  ECOTEC Supercharged or Turbo to Chevy Automatic V8 Transmission (700R4/TH350/TH400)
from $1,350.00

EC102 ECOTEC Supercharged or Turbo to Chevy Automatic V8 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...

View full details
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...

View full details
from $1,450.00
FO501 FORD 8BA FLATHEAD
from $1,200.00

FO1001 FORD Y-BLOCK 239/252/272/292/312 TO CHVEY V8 AUTOMATIC TRANSMISSION (700R4)

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 ...

View full details
from $1,200.00
FO10001
from $1,250.00

FO102 FORD 429/460 TO FORD SMALL BLOCK AOD/C5/C6

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 (Ford...

View full details
from $1,250.00
FO1101 FORD MODEL A/B TO CHEVY V8 AUTOMATIC TRANSMISSION (700R4)
from $1,650.00

FO1101 FORD MODEL A/B TO CHEVY V8 AUTOMATIC TRANSMISSION (700R4)

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(...

View full details
from $1,650.00
FO1301 FORD 223 6-CYL TO FORD SMALL BLOCK AOD/C5/C6
from $1,250.00

FO1301 FORD 223 6-CYL TO FORD SMALL BLOCK AOD/C5/C6

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 (Ford...

View full details
from $1,250.00
FO1401 FORD MODULAR V8 TO DODGE HEMI TRANSMISSION
$1,350.00

FO1401 FORD MODULAR V8 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 ...

View full details
$1,350.00
FO1501 FORD 2300 4-CYL TO CHEVY V8 AUTOMATIC TRANSMISSION (700R4)
from $1,100.00

FO1501 FORD 2300 4-CYL TO CHEVY V8 AUTOMATIC TRANSMISSION (700R4)

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)...

View full details
from $1,100.00
FO1601 FORD SMALL BLOCK 1965 & NEWER TO FORD FLATHEAD MANUAL TRANSMISSION (1948 & OLDER)
$950.00

FO1601 FORD SMALL BLOCK 1965 & NEWER TO FORD FLATHEAD MANUAL 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...

View full details
$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...

View full details
$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...

View full details
$475.00
FO1801 Ford Modular Engine to Chevy LS1-350
from $1,375.00

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 ...

View full details
from $1,375.00
FO1901 FORD Y-BLOCK 239/252/272/292/312 TO FORD SMALL BLOCK & MODULAR MANUAL
from $1,450.00

FO1901 FORD Y-BLOCK 239/252/272/292/312 TO FORD SMALL BLOCK & MODULAR MANUAL

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...

View full details
from $1,450.00
FO2001 FORD FE 352/360/390/406/427 TO SMALL BLOCK FORD MANUAL TRANSMISSION
$1,450.00

FO2001 FORD FE 352/360/390/406/427 TO SMALL BLOCK FORD MANUAL TRANSMISSION

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...

View full details
$1,450.00
FO201FordFE352
from $1,350.00

FO201 FORD FE 352/360/390/406/427 TO FORD SMALL BLOCK AOD/C5/C6

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 (Ford...

View full details
from $1,350.00
FO203 FORD FE 352/360/390/406/427
from $1,300.00

FO202 FORD/MERCURY FE 410/428 TO SMALL BLOCK FORD AOD/C5/C6

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 (Ford...

View full details
from $1,300.00