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CH301 CHEVY STOVEBOLT STRAIGHT-6 (216/235/261) TO CHEVY V8 AUTOMATIC TRANSMISSION (700R4)
from $995.00

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...

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from $995.00
FO301 FORD Y-BLOCK
from $1,350.00

FO301 FORD Y-BLOCK 239/252/272/292/312 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...

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from $1,350.00
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...

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from $1,350.00
CA101 1954-63 CADILLAC 365/390
from $1,150.00

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 $1,150.00
FO203 FORD FE 352/360/390/406/427 TO FORD MODULAR V8 AUTOMATIC TRANSMISSION
from $1,350.00

FO203 FORD FE 352/360/390/406/427 TO FORD MODULAR V8 AUTOMATIC TRANSMISSION (6R80/4R70W)

Speed Gems

Materials Included: (1) Adapter Plate - Ford/Lincoln/Mercury to Ford(1) Crank Adapter - Ford/Lincoln/Mercury/Edsel to Ford AOD(1) Flexplate(1) High...

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from $1,350.00
FO2501 FORD 429/460 TO FORD MODULAR V8 AUTOMATIC TRANSMISSION (6R80/4R70W)
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from $1,650.00

FO2501 FORD 429/460 TO FORD MODULAR V8 AUTOMATIC TRANSMISSION (6R80/4R70W)

Speed Gems

Release expected 5/4/2026 Call for more info 763-767-4480 USES V8 STYLE 5.0L/5.4L 6R80 *** If you have a 351M or 400, Please see kit # FO250...

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from $1,650.00
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Mechanical components including a flywheel, clutch plate, and starter motor on a white background
from $1,100.00

FO2701 FORD SMALL BLOCK V8 TO FORD MODULAR V8 AUTO

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Back and better than ever, our small block Ford to Modular V8 automatic kit is ready to take your project to the next level. With a refined footpri...

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from $1,100.00
FO401 FORD FE 352/360/390/406/427
from $1,350.00

FO401 FORD FE 352/360/390/406/427 TO CHEVY V8 AUTOMATIC TRANSMISSION (700R4)

Speed Gems

Materials Included: (1) Adapter Plate – Ford FE to Chevy(1) Crank Adapter – Ford FE to Chevy(1) Flexplate(1) High-torque mini-Starter(4) SHCS 7/16-...

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from $1,350.00
FO501 FORD 8BA FLATHEAD
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from $1,200.00

FO501 FORD 8BA FLATHEAD (1949-1953) TO CHEVY V8 AUTOMATIC TRANSMISSION (700R4)

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Materials Included:  (1) Adapter Plate – 1949-1953 Ford Flat-head to Chevy Auto.(1) Crank Adapter – 1949-1953 Ford Flat-head to Chevy Auto.(1) Flex...

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from $1,200.00
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Buick 264/322 Nailhead
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from $1,150.00

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

Speed Gems

** CALL FOR LEAD TIME DETAILS** Materials Included: (1) Adapter Plate - Buick Nailhead to Chevy(1) Crank Adapter 1953-56 Buick 264/322 Nailhead to ...

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from $1,150.00
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FO10001
from $1,250.00

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

Speed Gems

Note: Does not work with 351M/400. 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 fle...

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from $1,250.00
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 ...

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from $1,200.00
MT601 Ford T-5 1983-1993
$325.00

MT601 Ford T-5 1983-1993 to most 1964-82 Ford 3 & 4-speed Bellhousings

Speed Gems

Materials Included: (1) Adapter plate - 1983-1993 Ford T-5 onto most Ford 3 and 4 speed bellhousings(2) FHSCS 7/16-14 x 1-1/2(2) HCS 3/8-16 x 1 3/4...

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$325.00
OL301 1949-1956 Oldsmobile 303/324
from $1,575.00

OL301 1949-1956 Oldsmobile 303/324 to Chevy Automatic Transmission (internally balanced)

Speed Gems

Note: Due to the nature of the Chevy V8 bellhousing being larger than the engine block rear profile and shape, this kit requires modification of th...

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from $1,575.00
OL302 1957-1960 Oldsmobile 371/394
from $1,575.00

OL302 1957-1960 Oldsmobile 371/394 to Chevy Automatic Transmission (externally balanced)

Speed Gems

Note: Due to the nature of the Chevy V8 bellhousing being larger than the engine block rear profile and shape, this kit requires modification of th...

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from $1,575.00
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...

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from $1,150.00
S10006 - High-Torque mini-Starter (Multiple Kit Applications)
$178.99

S10006 - High-Torque mini-Starter (Multiple Kit Applications)

Speed Gems

This Starter works with the following Speed Gems Kit #'s: · AMC1 - 01· BU1 - 01· BU2 - 01· BU3 - 01· BU4 - 01· CA1 - 01· CA1 - 02· FO2 - 01· FO2 - ...

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$178.99
ME401 Mercedes 5 & 6-cylinder
from $1,450.00

ME401 Mercedes 5 & 6-cylinder (1987 & Newer) Diesel Engine (w/ 15-degree) to Chevy Manual Transmission

Speed Gems

15 degree offset it to angle the engine more than from the factory for tighter packaging in shorter engine bays. Materials Included: (1) Adapter ...

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from $1,450.00
PA201  1955-1956 Packard 320/352/374  V8 to Chevy 700R4/Automatic Transmission
from $1,350.00

PA201 1955-1956 Packard 320/352/374 V8 to Chevy 700R4/Automatic Transmission

Speed Gems

We’re proud to continue offering these specialized kits, though availability may occasionally be limited due to lower demand.  Please allow 4–8 wee...

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from $1,350.00
MT301  216/235 with 3-speed Chevy Bellhousing 1954 and Older to Chevy S10 T5 1984-1992
$255.00

MT301 216/235 with 3-speed Chevy Bellhousing 1954 and Older to Chevy S10 T5 1984-1992

Speed Gems

Materials Included: (1) Adapter plate - 1984-1992 Chevy S10 T5 to 1954 or older Chevy 216/235 with Chevy 3-speed Bellhousings(4) FHSCS 3/8-16 x 1-1...

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$255.00
OL303 1961-1964 Oldsmobile 394 with "Slim-Jim"
from $1,200.00

OL303 1961-1964 Oldsmobile 394 with "Slim-Jim" to Chevy Automatic Transmission (166-tooth externally balanced)

Speed Gems

Note: You will be re-using the stock Slim-Jim flywheel with this kit. Remove the original drive plate that is held onto the stock flywheel with 5/1...

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from $1,200.00
FO901 FORD SMALL BLOCK 221/260/289 1964 & OLDER TO FORD SMALL BLOCK AOD/C5/C6
from $1,250.00

FO901 FORD SMALL BLOCK 221/260/289 1964 & OLDER TO FORD SMALL BLOCK AOD/C5/C6

Speed Gems

Please call for availability +1 763-767-4480 Note: This kit will also work for a C5, C6. If you plan on using a C4, be sure that you have the large...

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from $1,250.00
MT101 Chevy 3 & 4-speed Bellhousings
$325.00

MT101 Chevy 3 & 4-speed Bellhousings (most) to Chevy S10 T5 1984-1992

Speed Gems

Materials Included: (1) Adapter plate - 1984-1992 Chevy S10 T5 to most Chevy 3 & 4-speed Bellhousings(4) SHCS 1/2-13 x 2 This BELLHOUSING ADAP...

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$325.00
PA101  Packard 288/327/359 Straight-8 to Chevy Automatic V8 Transmission
from $1,350.00

PA101 Packard 288/327/359 Straight-8 to Chevy Automatic V8 Transmission

Speed Gems

We’re proud to continue offering these specialized kits, though availability may occasionally be limited due to lower demand.  Please allow 4–8 wee...

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from $1,350.00