I know it may not be a W-body. But Just a few months ago before I bought my Lumina, I used to have an 86 Chevy Astro..4.3 TBI V6. Nothign done to the engine and it had 104k miles on it. I was on my way to a friends house about 20 minutes down the road. I was at a stop light. Thought it woudl be funny to do a brake torque. Funny as hell. The guy in the civic revved his itty bitty 4 cyl at me. And I nodded.
Floored the van. Civic had a good jump off the line (Being FWD)
Right at about 40 MPH, I pulled ahead. This guy acted like he had somethign done to it. Some crappy exhaust made it sound like he had work done to it. I ended up winning by a good 4 or 5 car lengths. I would post how fast I was going, but the little needle stops at 85 hehe.
Just a reminder, a Stock 1986 Chevy Astro Van, 4.3L V6 with only 150 HP, (225 lb. ft. of torque) won against a "done up" 99 civic. That was humiliation on his part