See "Downloads & Prices" page for Product Sheets and Instructions for specific adapters
THE FITMENT OF EACH ADAPTER IS DETAILED IN THE PRODUCT SHEET.
If your engine or transmission is not listed there then IT WILL NOT WORK.
(no matter what someone else says)
Tech Article Scans from 1956 (1-2 mb pdf)
This includes Engine hp and weights
- Transmission Bolt Pattern Designations and Naming Conventions. This
is not all-inclusive and is simply provided to help you identify a particular
bolt pattern visually. If in doubt, don't assume. Call with any particular
- AT=Automatic Transmissions
- MT=Manual Transmissions
- 350= Chevrolet Small and Big Block Bellhousing Bolt
- 350MT = General Motors "Muncie" and
"Saginaw" bolt pattern and register diameter
- 318= Mopar Small Block Bellhousing Bolt Pattern
- 426 = Big Block Mopar
- FE = Early Ford Big Block
- 460 = Late Ford Big Block
- 4.6L - Ford Modular
- 302= Ford 1965 up Ford Small Block Bellhousing Bolt
- BOP=Buick Olds Pontiac Cadillac Iron Block V8 Bellhousing
- FTL= Ford 1965-1978 Transmission Bolt Pattern
- FT5= Ford 1979-1992 Borg Warner T5 Transmission
- A833=Mopar Manual Transmission Bolt Patterns
- CadLa= Cadillac & Lasalle Manual Transmission
- 292= 49-64 Ford Lasalle Manual Transmission Bolt
- EFM= 1932-1948 Ford Lasalle Manual Transmission
- T5 Photos of the various T5 transmissions.
- "350" Chevrolet Bolt Pattern
from the introduction of the V8 in 1955 untill the LS1. Note the lack of
the top cernter bolt.
- "BOP" Buick iron blocks after 1966,
Oldsmobile after 1964, Pontiac after 1964(See 389-350), Cadillacs after
- "Unicase" General Motors multiple
bolt pattern case for Chevrolet and BOP
- "350MT" After 1955 on GM cars/trucks.
Most often trucks have a 5 1/8" center register cars measure 4 66"
- "Cad Lasalle" Long input,
bearing retainer not bolted to trans. top shift or side shift. Fort must
be sealed to bellhousing.
- "318" Small Block Mopar.
Starter bolts to the case on the drivers (US) side. Ring gear is on the
- "426" Big Block Mopar.Very
similar to "318" but will not interchange. One engine bolt hole
just below lower starter bolt.
- "A833" Mopar used a multitude
of bolt patterns and transmmissions, Best not to guess on these. One charateristic
is a very long pilot diameter.
- "302" 6 bolt pattern small
block Ford. Starter bolts to passenger side (US).
- "FE Ford" Starter is high on Pass.
- "460" Largest BH bolt pattern of
the bunch. Pass side starter.
- Ford "Modular" motor
- "292" 1949-1964 Ford Tall
and narrow pattern. Can have 1 3/8" or 1 1/16" input shaft diameter.
- "EFM" Early Ford Mercury.
1932-1948 Ford V8. Round with 8 bolt holes and 2 3/8" dowel pin holes.
1 3/8" input.
- "T56" Borg Warner 6 speed. Common bolt pattern but multiple
input shaft lengths. GM, Ford and Chrysler all used this transmission.
Best bet is to identify original application and year. Versions that originally
had the "Pull" clutch styles can be difficult to adapt.
- Borg-Warner built this transmission beginning in the
early 80's and another company under licence continues to do so. Multiple
applications including imports. The left unit is a GM 4 cylinder version
with the fine spline input and the tall narrow pattern. There are 2 main
bolt patterns; The GM versions mated to the V6 and V8 up to 1991 used the
standard Muncie or "350MT" pattern. The GM 4 cylinders and Ford
applications used the tall narow pattern. Except for the ones with the
"350MT" pattern, input shaft length varies according to the application
and year so it is best to call with a measurement if using the Ford T5
or GM 4 cylinder version.
P.O. Box 763 Pismo Beach CA 93448
FAX (805) 481-9367
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