[Zagato_Olaf]

Hello members,

I thought it was time to make a new compilation of the information that we have gathered so far (02-02-2014). Thank you for all the members that contributed to this thread/database.

Definition:
But first an addition to definition of what a GTAm is.
As already said the GTAm was an Alfa Romeo 1750 GTV USA (105.51) that had Spica fuelinjection. It had two brake boosters and standing pedals. These cars were converted by Autodelta to GTAm specification. The homologation papers specify what changes could be made. Autodelta had a complete list of options to convert the car into a GTAm.
Along with the type 1750 GTV USA (105.51) some type 1750 GTV EU (105.44) have also been converted (standing and hanging pedals). The same goes for some type 2000 GTV’s (105.21) with hanging pedals.
Besides that, UlrichGTA told me that in Germany some GT 1300 Juniors (105.30) have been converted to GTAm because the GT 1300 Junior was lighter.
Difficulty with the GTAm is, that it never had a unique type- and chassisnumber. This is unlike the type GTA (105.32 LHD and 105.34 RHD) and type GTA 1300 Junior (105.59).

Variants:
There are variants within the different types:
- new cars from the production line converted to GTAm spec's by Autodelta SpA as Autodelta works cars
- new cars from the production line converted to GTAm spec's by Autodelta SpA as Autodelta customer cars
- existing cars converted to GTAm spec's by Autodelta SpA as Autodelta customer cars
- new or existing cars converted to GTAm spec's by other tuners/teams with a combination of Autodelta, Angelini, Balduzzi, Facetti and other parts like the `Balduzzi` cars (Tony Adriaensens mentions this in his book)
- new or existing (replacement) bodyshells with or without a chassisnumber that were equipped with Autodelta, Angelini, Balduzzi and other parts (for example from wrecked cars)
- other variants on this theme in various stages of tune

There is a list of Autodelta options for your 1750/2000 GTAm called "GTAm modifications & options for GTAm". Source of this info is the 1st edition of “Alleggerita” by Tony Adriaensens. In the 2nd edition of “Alleggerita” by Adriaensens, Dasse & Übelher, you will find a list and photographs of the parts that are specific to the GTAm (als well as to the Giulia Sprint GTA, GTA-SA and GTA 1300 Junior). This 2nd edition is a “must” for any GTA, GTA 1300 Junior, GTA-SA and 1750/2000 GTAm fan!

The options according to the 1st edition of “Alleggerita”:

Aluminium or steel or plastic doors and boot lid
Plastic hood and dashboard
Plexiglass door glass – descending window or sliding window
Lightweight laminated Glaverbel windshield and rear window
Rear window also available in Plexiglass
Lightweight battery in trunk (Warley)
Anatomic racing seat – Tipo 33 – total weight 3 kg/6.6 lbs
Roll over protection cage
Leather rimmed racing (steering) wheel
FIA oil catch tank (1 litre)
Special rear axle locating system, sliding block
Fully modified differential housing including Pivot Pin and reinforcements
Steel torque Tee – optional Unibal joints
Modified arms for rear stabiliser bar
Koni 220/85 shock absorbers
Modified front suspension
26 mm front stabiliser bar
18 mm rear stabiliser bar
Special close ratio gearboxes – on demand Colotti T 118 gearbox
ZF Autolock differential
Lightweight bell housing, gears and gear lever
Special lightweight racing or heavy duty rallye assembly clutch
Sebring front exhaust pipe
100 litre fuel tank with racing cab
Special Autodelta patented 100 litre safety fuel tank
Reinforcements for oversize tank
Dual Bendix fuel pumps + Lucas main fuel pump
Special plumbing for dual fuel pumps
Serck’ oil cooler
Electron alloy deep sump and protection shields
Modified oil pumps with, if necessary longer pickups for deep pan bottoms
Elaborated crankcase
Monosleeves
Special racing camshafts
Special racing pistons – flat
Lightweight flywheel
Racing crankshafts
Special steel racing (connecting)rods; 0,740 kg/ 1.631 lbs
Special small cylinderhead – valve angle 45 degrees – with double ingnition
Guillotine throttle assembly for use with Spica or Lucas mk II
Fiberglass air box assembly with integral horns & nozzle holders
Spica or Lucas injection
10.000 rpm rev-counter
Dinoplex electric ignition
Ventilated ATE front and rear discs with aluminium calipers
13” Campagnolo magnesium wheels (from 7Lx13” to 10Lx13”) also 7Lx15” was available
Plastic front and rear fender flares to use with 13” wheels

On special demand:
16 valve, single ignition cylinder heads approx. 240 hp
T64 braking torque differential

I doubt whether this list is fully complete.
What about a radiator (copper) expansion tank?
Special Autodelta works engines?
16 valve exhaust manifold?

I have to check the 2nd edition of “Alleggerita” for the list with options.

And what about other tuners such as Angelini with it's 2000cc 16 valve cylinderhead with Weber carburettors?
Further specifications can be found in the homologation papers.

A lot of GTAm's will have been updated during and after their racing life, engines and gearboxes were swapped, they have been restored, etc ..... And some of these cars had great palmares while others were less fortunate.

Copies:
Besides that, there are a lot of copies with various stages of tune with less or more original GTAm parts. Have a look around on alfabb and you will see a lot of GTV's being changed into GTAm copies. Some of them are very nice and well built.

Chassisnumbers:
Here is a list with with chassisnumbers and the sources of the information we have collected sofar. The latest list dates from 30-12-2013. This list is an updated and extended version of the earlier lists published here. Sources for this list are Maurizio Tabucchi (MT) in his book “Alfa Romeo GTA”, Adriaensens in his 1st edition of the book ”Alleggerita”, Adriaensens, Dasse & Übelher (A,D&Ü) in their 2nd edition of the book “Alleggerita”, members of this forum and my own research. The so called “bad scan” that is mentioned was a paper with errors that caused some misunderstandings concerning chassisnumbers.

List from 30-12-2013:
105.44
# 1357840 Monzeglio 105.44 GTAm, questionmark?
# 1358476 Elaborazione Autodelta 1968, Autodelta works engine (source: MT), , history mentioned by A,D&Ü, licenseplates BL 54224 / TV 191114 / PN 48500 / TV 313588
# 1357933 (source: Martin Übelher)
# 1363100 History mentioned by A,D&Ü
# 1378479 Monzeglio Squadra Corse 1970 (source: MT), Martin Übelher confirms this car as genuine in post #40, history mentioned by A,D&Ü, this car has the square indicator lights in the front instead of the small round indicator lights
# 1382607 (source: Fred della Noce), Fred noted that he used to own a Brasilian ex Jolly Club Hotel GTAm now owned by Alcidis Diniz in Brasil. Look in this thread: http://www.alfabb.com/bb/forums/gta-...13599-a-3.html. Autodelta SpA prepared, history mentioned by A,D&Ü, this car has the square indicator lights in the front instead of the small round indicator lights, licenseplate TO E38632

105.51
# 1530037 (source: Eiso Bergsma, he claims that the original Autodelta invoices are with the car), Prepared in 1974, Balduzzi camcover, history mentioned by (A,D&Ü)
# 1530038 (source: Don Best) typo for 1530938 according to the 'bad scan', Don Best confirmed it is a typo because he was working from the 'bad' scan)
# 1530145 (source: Don Best) typo for 1532345?, according to the ‘bad scan’, Don Best will investigate
# 1530246 (source: Don Best) typo for 1532346?, according to the ‘bad scan’, Don Best will investigate
# 1530537 (source: RossoGTVforme, Autodelta prepared (works car?) No date (Sent to US), seen in Monterey)
#1530671 Autodelta SpA, 01-09-1969, history mentioned by A,D&Ü, licenseplates Prova MI 1370/F-DE 65/MI K97829
# 1530776 Autodelta SpA, 29-10-1969, history mentioned by A,D&Ü, licenseplate MI L18548
# 1530782 Alfa Romeo SpA, 31-12-1969Takis confirms car now in the Alfa Romeo Museo Storico collection, see post #34, history mentioned by A,D&Ü, licenseplate MI L12787
# 1530787 (source: Don Best) (typo for 1530782 according to Martinue's 'bad scan', Don Best confirmed it is a typo because he was working from the 'bad' scan)
# 1530834 Autodelta works car No date (source: Adriaensens) Imported by Alfa Romeo Benelux, history mentioned by A,D&Ü,
#1530838 Autodelta SpA to Alfa Romeo Vertriebs GmbH Frankfurt am Main, history mentioned by A,D&Ü, licenseplates MA GS-555/MA TB-555
# 1530840 Raced by Alfa Romeo Benelux/Grafo Racing Team No date (source: Adriaensens), chassis mentioned by A,D&Ü
# 1530841 Raced by Hahn No date (source: Adriaensens), history mentioned by A,D&Ü, licenseplate MA HE-555
#1530843 Chassis mentioned by A,D&Ü
# 1530848 27-01-1970 previously owned and raced by Toine Hezemans No date (source: Adriaensens), chassis mentioned by A,D&Ü, licenseplate 63-42-MN and 93-42-MN
# 1530849 Autodelta SpA 27-01-1970, history mentioned by A,D&Ü, licenseplates MI K92422/HGN-19K ,
# 1530879 Autodelta SpA 08-01-1970, history mentioned by A,D&Ü, licenseplate MI K63991
# 1530896 Autodelta 28-01-1970, history mentioned by A,D&Ü,
# 1530938 Autodelta SpA 26-01-1970, history mentioned by A,D&Ü,
could be ex-Chiapparini and ex-Rosso Bianco collection, is now in private collection and for sale as of december 2010, licenseplate MI K91850
# 1530952 Autodelta SpA 26-01-1970 (source: MT) Autodelta works car No date (source: Adriaensens), history mentioned by A,D&Ü, licenseplate MI L27247
# 1530974 (source: Bjorn Schmidt), history mentioned by A,D&Ü
# 1531034 Autodelta SpA 11-02-1970 (source: MT), history mentioned by A,D&Ü, licenseplate MI L26447
# 1531039 Autodelta SpA 11-02-1970 (source: MT) Ex SOFAR France driven by Chasseuil (source: Adriaensens), history mentioned by A,D&Ü
# 1531042 Autodelta SpA 16-02-1970 (source: MT) Autodelta works car No date (source: Adriaensens), history mentioned by A,D&Ü, licenseplate MI L26448
# 1531068 24-02-1970 Car was bought at the end of 1970 and needed a rebuild when it arrived in Australia (source: Vince Sharp), history mentioned by A,D&Ü, have a look at http://www.alfabb.com/bb/forums/gta-...lo-2013-a.html
# 1531210 Raced by Alfa Romeo Benelux No date (source: Adriaensens), history mentioned by A,D&Ü
# 1531212 Alfa Romeo SpA, history mentioned by A,D&Ü, licenseplate MI L47391
# 1531222 Autodelta 20-02-1970 (source: MT) see post #192, Alfa Romeo SpA according to and history mentioned by A,D&Ü, licenseplates MI L47392/ SI 124926
# 1531230 Autodelta SpA works car 30-05-1970 (source: Adriaensens), history mentioned by A,D&Ü, licenseplate MI L47393
# 1531231 Luigi Cecchini 26-05-1970 (source: MT), Takis confirms car is now in Greece, see post #35, Autodelta works engine* No date (source: Adriaensens), history mentioned by A,D&Ü, licenseplate MI L29550
#1532022 01-10-1970, sold 22-02-1971 in Madrid, Spain, body colour is white with black interior, chassis mentioned by A,D&Ü, licenseplate MI M48973
#1532028 Alfa Romeo Deutschland, history mentioned by A,D&Ü
#1532099 (source: Matteo Tstsis) 14-01-1971 Car tuned by Autodelta and sold on the 10th of May 1971 to Motor Hellas, Athens, Greece
# 1532165 (source: Don Best) (typo for 1532166 according to Martinue's 'bad scan'), Don Best confirmed it is a typo because he was working from the 'bad' scan)
# 1532166 Destination USA (source: MT) Autodelta prepared for Scuderia Brescia Corse No date (source: Adriaensens), history mentioned by A,D&Ü, licenseplates MI L27427/MI L31853/MI M54088/PR193113/MN 192542
# 1532265 Autodelta SpA 23-01-1971 (source: MT), Escuderia Nacional, history mentioned by A,D&Ü, licenseplate MI M48973
# 1532307 Autodelta 23-01-1971 (source: MT), history mentioned by A,D&Ü
# 1532327 Autodelta 23-01-1971 (source: MT), chassis mentioned by A,D&Ü
# 1532345 (source: MT in post #112: Don Best and others in the thread concerning 'GTAm prices' mentioning the 'Angola' GTAm's), 17-05-1971, chassis mentioned by A,D&Ü, licenseplate AAD-XX-XX
# 1532346 (source: MT in post #112: Don Best and others in the thread concerning 'GTAm prices' mentioning the 'Angola' GTAm's), 17-05-1971, history mentioned by A,D&Ü, licenseplates AAD-XX-XX/ST-76-00
# 1533142 Autodelta SpA 28-01-1972 (source: MT) Autodelta works car No date (source: Adriaensens), history mentioned by A,D&Ü
# 1534912 (source: Ecarrillo) Should this read 1354912 and was it a typo? Why then was chassis 1534912 mentioned in the auction data? What about the RHD?
# 1538476, not possible because chassisnumber is too high (?!): 1538476 should probably read 1358476 (source: Adriaensens)

Please remember that this list is far from complete when the history of the individual chassis is concerned. There simpy isn't enough room to add all that is known.
Please note that Adriaensens, Dasse & Übelher have added a lot of history to the individual chassisnumbers in the 2nd edition of "Alleggerita". More is to come, because A, D & Ü did not add history that could not be verified. For example #1530841 is one of the chassisnumbers with a lot of info to be added.

Furthermore, Tom Tanner made a list of colours belonging to the different chassisnumbers.

Please feel free to correct and add information to this list.

Sources:
• "Alleggerita" 1st edition by Tony Adriaensens
• "Alfa Romeo GTA" by Maurizio Tabucchi
• "Alleggerita" 2nd edition by Tony Adriaensens, Patrick Dasse & Martin Übelher
• Information from fellow AlfaBB members
• My own research


Ciao! Olaf