1981 R2 CALDER/SANDOWN Sports Sedan (GT) Series

/ super100mph Enjoy this wonderful race from all those years ago..We Believe this is Round 2 Heat 2 at Calder Raceway 1981, an amazing blast from the past featuring Tony Edmondson's brilliant Alfa GTV Holden, John Briggs in his mighty Chevrolet Monza, Bob Jane Chevrolet Monza.
1980 Australian Sports Sedan Championship R3 Highlights (ICMR) • 1980 AUSTRALIAN SPORTS...
1982 Sports Sedan/GT Championship Round 4 Adelaide (ICMR)

[@alfaromeo5069]

Fantastic race - Thank you for the video ;-)

[@gdiserviciisrl7121]

bellissimo filmato

[@CaptainScarlet1961]

Wow that was an awesome race, really close but super clean just like it should be.......

[@ldnwholesale8552]

At that time Briggs Monza had a huge list of faults that should have actually stopped it from being raced. And it had 6 litre engine in comparison to the Alfas 5 litre.

[@Holden308]

Interestingly, despite the adoption of IMSA spec GT racing by CAMS in 1982 which allowed cars to run engines up to 6000 cc (as well as the entry of Le Mans style racers like the Porsche 935 and 944 turbos), the Don Elliot owned Alfa continued to use the 5 litre Chevy V8 until mid-1983 when they finally upgraded it to the 6 litre engine and K&A in Adelaide rebuilt the car to GT spec which allowed for 18 inch rear wheels rather than the 10 inch it ran in sports sedan guise. That's largely why the Edmonson Alfa was largely blown away for speed in 1982 by the 935 driven by Alan Jones and the Peter Brock driven Bob Jane Monza which had been upgraded to GT spec, the car was still basically a Group B Sports Sedan up against IMSA GT cars.

[@Holden308]

But to actually answer your question which I should have done 3 years ago ... under CAMS Group B Sports Sedan rules, cars could only run engines up to 5000cc if the road going variant came with an engine 5.0L or less. The biggest engine the Alfetta came with in road form was a 2.5L V6, thus it was restricted to a 5.0L V8. If the road car had a larger than 5000cc engine, the race car could run up to 6.0L. As some road Monza's came with the 350 Chev, they could run a 6.0L V8. The Jag could also run up to 6.0L as it came with a 5.3L V12. From what I understand, the ex-McCormack Jag ran a 5.6L V12.
The trade off for having the larger engines was more weight and that tyre size under Sports Sedan rules remained at 10" maximum regardless of engine capacity., thus

[@cabeman89]

this is from 1981 - not 1980 - part of the ABC telecast from round 2 of the ATCC

[@Super100MPH]

Thanks for that!

[@gricads]

thanks for the upload