The "Ultimate Street Performance Engine" 1380cc Classic Mini engine is mated with a gearbox, with flywheel and clutch assemblies all in place. These late model Mini Cooper rod change transmissions are also fully rebuilt and painted, and in the base configuration are assembled with a 3.44 final drive.
Optional kits to install the power-unit in earlier model Classic Mini Coopers are available. An optional remote shift box can be equipped too.
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The "Ultimate Street Performance Engine" from Mini Mania is the result of 40+ years of building and racing our own Mini Coopers. Because drivability and reliability are of utmost importance in any Classic Mini Cooper, only components from well-established suppliers are utilized to build our Mini motors.
While the standard configuration is described here, power-units can be customized to meet your particular needs for your Mini Cooper. Just ask your friendly Mini Mania Sales Technician for a custom power-unit quote.
Engine blocks are cleaned, magnaflux'd, bored and painted. The Classic Mini Cooper cylinder head is one of our special Aluminum heads, which is not only cast ported, but has hardened valve seats for use with unleaded fuels. The Mini motor uses Evo 9cc dished pistons, which are specifically designed for this application. Elgin supplies the custom ground camshaft, which is driven by a new timing chain and gears.
The built Classic Mini engine is mated with a gearbox, with flywheel and clutch assemblies all in place. These late model Mini Cooper rod change transmissions are also fully rebuilt and painted, and in the base configuration are assembled with a 3.44 final drive.
Optional kits to install the power-unit in earlier model Classic Mini Coopers are available. An optional remote shift box can be equipped too.
Note: There is NO CORE CHARGE! And if you want to save even more money, call us about our 'Trade In' Program that allows you to get money back on your old (1275cc) engine!
Specifications:- 73.5mm squeeze-cast pistons
- 10:1 Compression
- 10/10 Crank
- Elgin CAM003 carefully timed in at 107º for best horsepower
- 11-Stud Aluminum Cylinder Head With Big Valves
- These power-units are hand built with care, stand tested and tuned (final tuning, of course, is always done in the Mini). Shipped palletized and protected, the power-units are ready to bolt in and run.
Engines built by Mini Mania are warranted by Mini Mania for 12 months or 12,000 miles (which ever comes from first). Non-refundable $1,000 deposit required.
Let us build you the engine you need! Call us at 800-946-2642 for your customized rebuild.
Mini Mania Engine Comparison Tool - 1380 cc
1380_ENGINE | 1380HP_ENGINE | 1380HP_ENG_ULT | 1380HP_ENG_5SPD | |
Cast Iron Head | ||||
Aluminum Head | ||||
3.4 Differential | ||||
3.1 Differential | ||||
3.2 Differential | ||||
4 Speed | ||||
5 Speed | ||||
LCB Header | ||||
Elec. Distributor | ||||
Carb System | ||||
Distributor Wires | ||||
Duplex Timing Kit | ||||
ARP Studs |
Interested in a 1275cc rebuilt engine? We have those too.
Mini Mania - where Classic Mini Rebuilt Engines are for Sale
Here's the disc brake conversion kit: https://www.minimania.com/part/C-AJJ4028/Brake-Conversion-Kit-Drum-To-Disc-S-Classic-Mini
Here's a header and pipes kit: https://www.minimania.com/part/C-STN18A/Stage-One-Kit-For-1275-Mini--Cooper-W-hif44-Carb-Stage-1
Carb: https://www.minimania.com/part/MMKT0402/Classic-Mini-175-Su-Hif6-hif44-Rebuilt-Conversion-Kit-For-1380-Engines
Electronic distributor: https://www.minimania.com/part/PSD55/Classic-Mini-59d-A-Electronic-Distributor-Non-Vac-High-Energy-Type
Mini Mania Tech Team
The Classic Mini Parts and Accessories Experts
Mini Mania Tech Team
The Classic Mini Parts and Accessories Experts
Mini Mania Tech Team
The Classic Mini Parts and Accessories Experts
Mini Mania Tech Team
The Classic Mini Parts and Accessories Experts
The "Ultimate Street Performance Engine" from Mini Mania is the result of 40+ years of building and racing our own Mini Coopers. Because drivability and reliability are of utmost importance in any Classic Mini Cooper, only components from well-established suppliers are utilized to build our Mini motors.
While the standard configuration is described here, power-units can be customized to meet your particular needs for your Mini Cooper. Just ask your friendly Mini Mania Sales Technician for a custom power-unit quote.
Engine blocks are cleaned, magnaflux'd, bored and painted. The Classic Mini Cooper cylinder head is one of our special Aluminum heads, which is not only cast ported, but has hardened valve seats for use with unleaded fuels. The Mini motor uses Evo 9cc dished pistons, which are specifically designed for this application. Elgin supplies the custom ground camshaft, which is driven by a new timing chain and gears.
The built Classic Mini engine is mated with a gearbox, with flywheel and clutch assemblies all in place. These late model Mini Cooper rod change transmissions are also fully rebuilt and painted, and in the base configuration are assembled with a 3.44 final drive.
Optional kits to install the power-unit in earlier model Classic Mini Coopers are available. An optional remote shift box can be equipped too.
Note: There is NO CORE CHARGE! And if you want to save even more money, call us about our 'Trade In' Program that allows you to get money back on your old (1275cc) engine!
Specifications:- 73.5mm squeeze-cast pistons
- 10:1 Compression
- 10/10 Crank
- Elgin CAM003 carefully timed in at 107º for best horsepower
- 11-Stud Aluminum Cylinder Head With Big Valves
- These power-units are hand built with care, stand tested and tuned (final tuning, of course, is always done in the Mini). Shipped palletized and protected, the power-units are ready to bolt in and run.
Engines built by Mini Mania are warranted by Mini Mania for 12 months or 12,000 miles (which ever comes from first). Non-refundable $1,000 deposit required.
Let us build you the engine you need! Call us at 800-946-2642 for your customized rebuild.
Mini Mania Engine Comparison Tool - 1380 cc
1380_ENGINE | 1380HP_ENGINE | 1380HP_ENG_ULT | 1380HP_ENG_5SPD | |
Cast Iron Head | ||||
Aluminum Head | ||||
3.4 Differential | ||||
3.1 Differential | ||||
3.2 Differential | ||||
4 Speed | ||||
5 Speed | ||||
LCB Header | ||||
Elec. Distributor | ||||
Carb System | ||||
Distributor Wires | ||||
Duplex Timing Kit | ||||
ARP Studs |
Interested in a 1275cc rebuilt engine? We have those too.
Mini Mania - where Classic Mini Rebuilt Engines are for Sale
Mini Mania Tech Team
The Classic Mini Parts and Accessories Experts
These gearboxes have been available for a good many years and have in fact proven to be just as reliable as original ones.
FOLLOW UP QUESTION: Ok thanks. I think mine is a remote linkage, currently, but I guess that’s easy to change if you buy a rod shift gearbox with the 1380. What RPM at 75 mph with the 5 speed box? I understand it is 3.4 FD and the 5th gear equates to around 3.0. What kind of HP do you get from a street tuned 1380? Any issues with heat with the bigger engine? Any concerns with the landing between 2-3 cylinders? My 1275 S block is bored to 1310 and appears to have several crack repairs in that spot?
ANSWER TO FOLLOW UP: Yes, upgrading to a rod change is very common! https://www.minimania.com/part/MMKT0803/Mini--Mini-Cooper-Rod-Change-Upgrade-Conversion-Kit

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