Products

Quick view
AP10004
Speed Gems
$500.00
Quick view
BH10003 Olds & Cadillac Bellhousing
Speed Gems
$345.00
Quick view
BU1000101 Buick Straight 8 233/248/263 with Manual Transmission to Chevy Automatic
Buick
$1,095.00
Quick view
BU1000301 Buick Straight 8 320 with Original Manual Transmission to Chevy Automatic
Buick
$1,095.00
Quick view
BU1000401 Buick 233/248/263/320 w/ Dynaflow to Chevy
Buick
$1,095.00
Quick view
BU1000501 1953-1956 Buick 264/322 Nailhead to Chev Automatic Transmission
Speed Gems
$675.00
Quick view
BU1000601 1957-1963 Buick 364 Nailhead to Chevy Automatic Transmission 2.90” Crank Flange
Speed Gems
$850.00
Quick view
BU1000602 1957-1963 Buick 401 Nailhead to Chev Automatic Transmission 2.90" crank flange
Buick
$850.00
Quick view
BU1000701 1964-1966 Buick 401/425 Nailhead to Chevy Automatic Transmission
Buick
$675.00
Quick view
BU1000702 1964-1966 Buick 401/425 Nailhead to Chev automatic transmission w/small hole flex plate
Buick
$675.00
Quick view
BU10009 Buick Bellhousing to GM 4 and 5 Speed
Speed Gems
$345.00
Quick view
BU1001001 Buick 364/401/425 Nailhead Heavy Duty Cast Aluminum Stick Complete Kit
Buick
$1,295.00
Quick view
BU10011 Buick Flexplate and Adapter/ '64 and Newer Trans to '63 and Older Motor
Speed Gems
$295.00
Quick view
CA1000101 1954 and up Cadillac 365 to Chevy Automatic
Cadillac
$895.00
Speed Gems

AP10004

$500.00
Adapter Plate Ford Modular to Chev
BH10003 Olds & Cadillac Bellhousing
Speed Gems

BH10003 Olds & Cadillac Bellhousing

$345.00
This cast aluminum bellhousing fits an Olds (1949 thru 1964) or Cadillac extended bellhousing engines(1949 through 1954). These bellhousings are NOT meant to exactly replace the stock bellhousings. They are made to accept a GM pivot ball and cast steel fork. We can machine them to accept most commonly available 3, 4, and 5 speed transmissions. We also have extended pilot bushings available for different length input shafts. 
 
This part is over 1/4 inch thick making it the heaviest duty bellhousing available for these engines. 
BU1000101 Buick Straight 8 233/248/263 with Manual Transmission to Chevy Automatic
Buick

BU1000101 Buick Straight 8 233/248/263 with Manual Transmission to Chevy Automatic

$1,095.00

Materials Included:

(1) Adapter plate - inner - Buick straight 8 to Chev
(1) Adapter plate - outer - Buick straight 8 manual to Chev
(1) Crank Adapter - Buick Straight 8, 233/248/263 with standard transmission to Chev automatic
(1) 168 tooth Chev flexplate FRA100 
(1) High torque mini starter 3510 
(2) Dowel pin .620 x 2 1/2 
(6) SHCS 7/16-20 x 3/4
(6) 7/16-20 x 3/4 flexplate bolts
(2) FHSCS 7/16-14 x 1-1/2
(3) HCS 7/16-14 x 1 1/2 YZ 8 
(4) Lock washer 7/16 YZ 8
(1) HCS 7/16-14 X 1 1/4 YZ 8 
(5) HCS 3/8-16 X 2 1/2 YZ 8 
(1) HCS 3/8-16 X 1 1/4 YZ 8 

*Matching our adapter kits with your engine can be tricky. If you are unsure of which kit to purchase for your engine, please call customer service at (763) 767-4480. Bendtsen's Speed Gems is not responsible for return shipping costs of mismatched kits.

BU1000301 Buick Straight 8 320 with Original Manual Transmission to Chevy Automatic
Buick

BU1000301 Buick Straight 8 320 with Original Manual Transmission to Chevy Automatic

$1,095.00

Materials Included:

(1) AP10018 Adapter plate - inner - Buick straight 8 manual to Chev auto 
(1) AP10017 Adapter plate - outer - Buick straight 8 manual to Chev
(1) Crank Adapter - Buick Straight 8, 320 with standard transmission to Chev automatic 
(1) 168 tooth Chev flexplate FRA100
(1) High torque mini starter 3510
(1) HCS 3/8-16 X 1 1/4 YZ 8 
(2) HCS 3/8-16 X 3 3/4 YZ 8 
(2) FHSCS 7/16-14 X 1-1/2 
(3) HCS 7/16-14 X 1 1/2 YZ 8
(6) FHSCS 3/8-24 X 1
(5) HCS 3/8-16 X 2 1/2 YZ 8
(6) 7/16-20 x 3/4 flexplate bolts
(2) Dowel Pin .625 x 2 1/2
(1) HCS 7/16-14 x 1 1/4 YZ 8
(4) Lock Washer 7/16 YZ 8

 

*Matching our adapter kits with your engine can be tricky. If you are unsure of which kit to purchase for your engine, please call customer service at (763) 767-4480. Bendtsen's Speed Gems is not responsible for return shipping costs of mismatched kits.

BU1000401 Buick 233/248/263/320 w/ Dynaflow to Chevy
Buick

BU1000401 Buick 233/248/263/320 w/ Dynaflow to Chevy

$1,095.00

Materials Included:

(1) Adapter plate - inner - Buick straight 8 manual to Chev auto
(1) Adapter plate - outer - Buick straight 8 manual to Chev
(1) Crank Adapter - Buick straight 8 to Chev
(1) 168 tooth Chev flexplate FRA100 
(1) High torque mini starter 3510
(6) SHCS 7/16-20 X 3/4
(1) HCS 3/8-16 X 1 1/4 YZ 8
(2) HCS 3/8-16 X 3 3/4 YZ 8
(2) FHSCS 7/16-14 X 1-1/2 
(4) HCS 7/16-14 X 1 1/2 YZ 8 
(4) Lock Washer 7/16 YZ 8
(5) HCS 3/8-16 X 2 1/2 YZ 8
(2) Dowel Pin .620 x 2 1/2 
(6) 7/16-20 x3/4 flexplate bolts 


*Matching our adapter kits with your engine can be tricky. If you are unsure of which kit to purchase for your engine, please call customer service at (763) 767-4480. Bendtsen's Speed Gems is not responsible for return shipping costs of mismatched kits.

BU1000501 1953-1956 Buick 264/322 Nailhead to Chev Automatic Transmission
Speed Gems

BU1000501 1953-1956 Buick 264/322 Nailhead to Chev Automatic Transmission

$675.00

Materials Included:

(1) Adapter plate - Buick Nailhead to Chev
(1) Crank Adapter - 1953-1956 Buick 264/322 Nailhead to Chev automatic transmission
(1) Torque converter drive plate
(6) SHCS 7/16-20 X 2 1/2
(4) FHSCS 7/16-14 X 1-1/2
(6) 7/16-20 x 3/4 flexplate bolts
(2) Dowel pin .621 x 1 Tapped
(5) HCS 3/8 16 X 1 1/4 YZ 8

*Matching our adapter kits with your engine can be tricky. If you are unsure of which kit to purchase for your engine, please call customer service at (763) 767-4480. Bendtsen's Speed Gems is not responsible for return shipping costs of mismatched kits.

BU1000601 1957-1963 Buick 364 Nailhead to Chevy Automatic Transmission 2.90” Crank Flange
Speed Gems

BU1000601 1957-1963 Buick 364 Nailhead to Chevy Automatic Transmission 2.90” Crank Flange

$850.00

Materials Included:

(1) Adapter plate - Buick Nailhead to Chev 
(1) Crank Adapter - Inner 
(1) Crank Adapter - Outer 
(1) Torque converter drive plate
(1) Flexplate - small center 
(1) Balance weight for Buick 364 to Chev auto
(6) SHCS 7/16-20 X 3
(4) SHCS 7/16-14 X 1 3/4
(2) SHCS 7/16-14 X 1 1/4 
(6) 7/16-20 x 3/4 flexplate bolts
(2) Dowel pin .621 x 1 tapped
(5) HCS 3/8-16 x 1 1/4 YZ 8

*Matching our adapter kits with your engine can be tricky. If you are unsure of which kit to purchase for your engine, please call customer service at (763) 767-4480. Bendtsen's Speed Gems is not responsible for return shipping costs of mismatched kits.

BU1000602 1957-1963 Buick 401 Nailhead to Chev Automatic Transmission 2.90" crank flange
Buick

BU1000602 1957-1963 Buick 401 Nailhead to Chev Automatic Transmission 2.90" crank flange

$850.00

Materials Included:

(1) Adapter plate - Buick Nailhead to Chev
(1) Crank Adapter - Inner
(1) Crank Adapter - Outer
(1) Torque converter drive plate
(1) Flexplate - small center
(1) Balance weight for Buick 401/425 to Chev auto
(6) SHCS 7/16-20 X 3
(4) SHCS 7/16-14 x 1 3/4
(2) SHCS 7/16-14 x 1 1/4
(6) 7/16-20 x 3/4 flexplate bolts
(2) Dowel pin .621 x 1 trapped
(5) HCS 3/8-16 x 1 1/4 YZ 8

 

*Matching our adapter kits with your engine can be tricky. If you are unsure of which kit to purchase for your engine, please call customer service at (763) 767-4480. Bendtsen's Speed Gems is not responsible for return shipping costs of mismatched kits.

BU1000701 1964-1966 Buick 401/425 Nailhead to Chevy Automatic Transmission
Buick

BU1000701 1964-1966 Buick 401/425 Nailhead to Chevy Automatic Transmission

$675.00

Materials Included:

(1) Adapter plate - Buick Nailhead to Chev 
(1) Crank Adapter - 1964-1966 Buick 401/425 Nailhead to Chev automatic transmission
(1) Torque converter drive plate
(6) SHCS 7/16-20 X 3
(4) SHCS 7/16-14 X 1 3/4 
(2) SHCS 7/16-14 X 1 1/4 
(6) 7/16-20 x 3/4 flexplate bolts 
(2) Dowel Pin .621 x 1 tapped 

*Matching our adapter kits with your engine can be tricky. If you are unsure of which kit to purchase for your engine, please call customer service at (763) 767-4480. Bendtsen's Speed Gems is not responsible for return shipping costs of mismatched kits.

BU1000702 1964-1966 Buick 401/425 Nailhead to Chev automatic transmission w/small hole flex plate
Buick

BU1000702 1964-1966 Buick 401/425 Nailhead to Chev automatic transmission w/small hole flex plate

$675.00

Materials Included:

(1) Adapter plate - Buick Nailhead to Chev
(1) C10018 Crank Adapter - 1964-1966 Buick 401/425 Nailhead to Chev automatic transmission
(1) Torque converter drive plate
(6) SHCS 7/16-20 X 3
(4) SHCS 7/16-14 X 1 3/4
(2) SHCS 7/16-14 X 1 1/4
(6) 7/16-20 x 3/4 flexplate bolts
(2) Dowel Pin .621 x 1 tapped
(1) Flex plate - small center

*Matching our adapter kits with your engine can be tricky. If you are unsure of which kit to purchase for your engine, please call customer service at (763) 767-4480. Bendtsen's Speed Gems is not responsible for return shipping costs of mismatched kits.

BU10009 Buick Bellhousing to GM 4 and 5 Speed
BU10009 Buick Bellhousing to GM 4 and 5 Speed
BU10009 Buick Bellhousing to GM 4 and 5 Speed
BU10009 Buick Bellhousing to GM 4 and 5 Speed
Speed Gems

BU10009 Buick Bellhousing to GM 4 and 5 Speed

$345.00
This bellhousing that will allow you to bolt a 3, 4, or 5 speed transmission to the 1957 thru 1966 Buick nailhead engine. Some 5 speed transmissions will require a second adapter plate.
We make these here in the U.S. They are cast and machined in Minnesota. This part is NOT meant to be an exact replacement for the stock Buick bellhousing. We have flywheels available for these engines as well.
This bellhousing does NOT fit the 264 / 322 nailhead engines.
BU1001001 Buick 364/401/425 Nailhead Heavy Duty Cast Aluminum Stick Complete Kit
BU1001001 Buick 364/401/425 Nailhead Heavy Duty Cast Aluminum Stick Complete Kit
BU1001001 Buick 364/401/425 Nailhead Heavy Duty Cast Aluminum Stick Complete Kit
BU1001001 Buick 364/401/425 Nailhead Heavy Duty Cast Aluminum Stick Complete Kit
BU1001001 Buick 364/401/425 Nailhead Heavy Duty Cast Aluminum Stick Complete Kit
BU1001001 Buick 364/401/425 Nailhead Heavy Duty Cast Aluminum Stick Complete Kit
BU1001001 Buick 364/401/425 Nailhead Heavy Duty Cast Aluminum Stick Complete Kit
BU1001001 Buick 364/401/425 Nailhead Heavy Duty Cast Aluminum Stick Complete Kit
BU1001001 Buick 364/401/425 Nailhead Heavy Duty Cast Aluminum Stick Complete Kit
BU1001001 Buick 364/401/425 Nailhead Heavy Duty Cast Aluminum Stick Complete Kit
Buick

BU1001001 Buick 364/401/425 Nailhead Heavy Duty Cast Aluminum Stick Complete Kit

$1,295.00

Materials Included:

(1) Bell housing - 1957-1963 Buick nailhead 364 to Chev manual transmission
(1) Flywheel - 1957-1963 Buick nailhead 364/401/425 to Chev manual transmission
(1) Pilot Bushing - 1957-1963 Buick nailhead 364401/425 to Chev manual transmission
(6) SHCS 7/16-14 X 1 3/4
(4) SHCS 1/2-13 X 1 1/4
(6) SHCS 7/16-20 x 1

*Matching our adapter kits with your engine can be tricky. If you are unsure of which kit to purchase for your engine, please call customer service at (763) 767-4480. Bendtsen's Speed Gems is not responsible for return shipping costs of mismatched kits.

Installation Instructions

BU10011 Buick Flexplate and Adapter/ '64 and Newer Trans to '63 and Older Motor
Speed Gems

BU10011 Buick Flexplate and Adapter/ '64 and Newer Trans to '63 and Older Motor

$295.00
CA1000101 1954 and up Cadillac 365 to Chevy Automatic
Cadillac

CA1000101 1954 and up Cadillac 365 to Chevy Automatic

$895.00

Materials Included: 

(1) Adapter plate - 1954 and up Cadillac to Chev auto
(1) Crank Adapter 
(1) High torque mini starter 3510
(2) HCS 3/8-16 x 3 3/4 YZ 8
(4) SHCS 7/16-14 x 1
(6) SHCS 7/16-20 x 3/4
(6) 7/16-20 x 3/4 flexplate bolts
(1) HCS 3/8-16 x 1 3/4 YZ 8
(3) USS Flat washer 3/8 YZ 8
(1) Lock washer 3/8 YZ 8
(1) HCS 3/8-16 X 1 1/4 YZ 8
(1) 168 tooth Chev flexplate FRA100
(2) Dowel Pin .625 x 1 tapped

*Matching our adapter kits with your engine can be tricky. If you are unsure of which kit to purchase for your engine, please call customer service at (763) 767-4480. Bendtsen's Speed Gems is not responsible for return shipping costs of mismatched kits.