Latest update: December 29th 2020 /updated further December 31st 2021.
Hello members,
I thought it was time to start updating the compiled list with GTAm chassisnumbers of genuine and authentic cars (as of 30-12-2020). Thus making a new compilation of the information that we have gathered so far (until 30-12-2020) with information that has been gathered in the last seven years, here and on other social media. Thank you for all the members that contributed to this thread/database! But first, what exactly is a GTAm?
Definition:
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 a GT 1300 Junior (105.30) has been converted to GTAm (because the GT 1300 Junior was lighter?). Here is the link to one of his comments on this topic.
Anybody know this car? Real GTAm? French registration...
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 parts from a specific tuner or 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 within the rules and specifications of the homoligation of the 1750 GTAm.
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. These options (and more?) are also mentioned in the editions (I to IV) of the "Performance Options Catalog".
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!
Options:
The options according to the 1st edition of 'Alleggerita' which are also found in the "Performance Options Catalog" (nr. IV or Rev 2/77):
- Aluminium or steel or plastic doors, hood/bonnet and boot/rear deck lid
- Plastic 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 inch Campagnolo magnesium wheels (from 7Lx13 to 10Lx13) also 7Lx15 was available
- Plastic front and rear fender flares to use with 13inch 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:
- 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.
Development:
A lot of GTAm's will have been rebuilt and updated during and after their racing life, engines and gearboxes were swapped, extra weight taken off for example hillclimbing, 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 30-12-2020. 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. You wil see the typos in the list.
List from 30-12-2020 with updates pending.
105.44
# 1357840 Monzeglio Squadra Corse, round front indicator lights, CT licenseplate, copy of the real car accoording too the sellers of this vehicle.
# 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 questionmark (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, licenseplate TO E38632
# 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. Autodelta SpA prepared, history mentioned by A,D&Ü.
105.51
# 1530037 (source: Eiso Bergsma, he claims that the original Autodelta invoice is with the car, others claim that this invoice belongs to another GTAm and was copied), prepared in 1974, Balduzzi camcover, history mentioned by (A,D&Ü)
# 1530038 (source: Don Best) Typo for 1530938 according to Martinues 'bad scan', Don Best confirmed it is a typo because he was working from the 'bad' scan. No GTAm.
# 1530145 (source: Don Best) Typo for 1532345, according to Martinues 'bad scan'. No GTAm
# 1530246 (source: Don Best) Typo for #1532346, according to Martinues 'bad scan'. It turns out that 0246 is a roadgoing 1750 gtv so it was a typo. No GTAm. See post #397
# 1530537 (source: RossoGTVforme, Autodelta prepared (works car?) No date (Sent to US), seen in Monterey. More info?)
#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, 31-12-1969 Takis 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 Martinues 'bad scan', Don Best confirmed it is a typo because he was working from the 'bad' scan. No GTAm.
# 1530834 Autodelta works car No date (source: Adriaensens) Imported by Alfa Romeo Benelux, history mentioned by A,D&Ü,
#1530838 Raced by Hahn, 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
#1530842 Chassis mentioned by A,D&Ü
#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
GTAm revealed at AROCA Spettacolo 2013
# 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. No GTAm.
# 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? Questionmark.
# 1538476, this probably should read as #1358476 (source: Adriaensens)
Please remember that this list is far from complete where 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
- "Performance Options Catalog" by Autodelta, nrs I to IV
- "Competition Reference Manual" by Don Black, revision of edition 2, January 10th 1999
- Research & information from fellow AlfaBB members and facebook members
- My own research
Ciao, Olaf 31-12-2021.