In reply to Keith Tanner :
Do you remember when there really was a class B?
Through the 80's the turbo engines rapidly eclipsed the NA engines to the point that by 1986 even the last Cosworth stalwart Ken Tyrrell had moved to Renault Turbo power. To reign in the rapidly escalating power the FIA decided to replace the 1.5L Turbo's with cheaper, lower power 3.5L NA engines, up from 3.0L for the old NA engines.
There was to be a two year phase in period. 1987 when although the turbo's would have less boost they were still expected to be ahead of the NA engines. Then for 1988 the turbo engines would be so severely hobbled the FIA expected the NA and turbo engines to be basically equal. Well things didn't work out as planned. We all know how 1988 worked. If it hadn't been for for Jean-Lois Schlesser (standing in for a sick Nigel Mansell) taking out Ayrton Senna at Monza and gifting Gerhard Berger in the Ferrari a very popular win, it would have been a 16 out of 16 grand slam for the (greatest race car of all tim IMHO) McLaren MP4/4. That final iteration of the Honda Turbo engine basically demolished everything else in it's path. The Ferrari turbo was also still faster than the NA engines, but the constructors championship showed the real truth. Mclaren won with 199 pts, Ferrari were second with 65 points then Benetton (previously Tolemen, then Renault, then Lotus and now Renault again!!!) were third, only 26 points behind Ferrari on 39 points.
Anyway, back to 1987. There really was a class B. A second championship within a championship for the new 3.5L NA engines. This was scored separately with the Drivers Championship being called the 'Jim Clark Trophy' and the Constructors being called the 'Colin Chapman Trophy' This was entered by Tyrrell, Lola, AGS, MArch and Coloni.
Jonathan Palmer, father of the much maligned recent F1 driver come commentator Joylen Palmer, handily won with seven 'victories' in the Tyrrell on 95 points with his team mate Philippe Streiff second with four 'wins' and 74 points. Third was another Philippe, Philippe Alliot in a Lola with three wins on 43 points. Note all this is on the old 9,6,4,3,2,1 points system for 1st - 6th only.
Interestingly enough the NA teams were also scored in the regular championship. Tyrrell finished 6th beating Arrows Megatron, Brabham BMW, Zakspeed, Ligier Megatron, Minardi - Motori Minardi, and finally Osella-Alfa Rome all with Turbo power. In the drivers championship Palma finished a very respectable 11th overall out of 32 drivers who entered and 21 of who scored points.
That's the end of todays history lessons boys and girls.