Well..the V8 was sleeved down from 3.5 liter to 3.0 liter 1988 to please the Merc boys.
The Fuel Injection came 1985. I never raced a 3.0 liter V8 but do not believe the way higher RPM some people are speculating/talking about.
Maybe some increase in RPM but never 15,000 someone wrote.
The 1988 US Formula 1 Series..OMC used a 3 liter F1 V8..!!
http://svera.se/blogg/the-1988-us-fo...3-liter-f1-v8/