[Immusaatmonna]

May be pretty tame, but than... I don't see nascar taxi's here either. [thumbup]

http://www.dumpert.nl/mediabase/1118...cago_taxi.html

[infinkPoode]

May be pretty tame, but than... I don't see nascar taxi's here either. [thumbup]

http://www.dumpert.nl/mediabase/1118...cago_taxi.html

Damn, If I had known they were doing that i would have stalked them in Chicago to get a ride! LoL. I wouldn't call a NASCAR engine tame in any sense of the word. These engines definitely like to scream with redlines in the 8500 to 9000rpm range.

3400lbs, 750hp out of a carbed n/a 358ci engine. Or about 5.8L. That makes about 129hp/liter, more than an S2000 has. Being that they are carbed and don't have VVT thats impressive. Nascar motors are both low tech and high tech. The machining tolerances that go into them are as tight as any other race bred power plant, but they are also simple carbs with cam in block 2 valve head. I would love to be able to put together a SBC 2.2 engine for a car. I'd fuel inject it of course, but still. Its a very impressive engine.

[cajonnmu]

Selling them a bit short, IMO, they turn up to 9500rpm, sit around 9000rpm for up to 600 miles (plus any qualifying, testing) and still give very good fuel consumption for the power produced - estimated to be pushing over 850hp* for the best, unrestricted engines!.
While the basic design is simple, the amount of development over the last couple of decades has been significant, giving close to 150hp per litre! [shocked]

*Found this---
With unrestricted motors:
Previous to the 9500 RPM rev limit rule, NASCAR Nextel Cup engines were producing close to 900 flywheel horsepower. This is when they were spinning up to 10,100 RPMs. Of course, the best teams were making this horsepower, and the independent/small teams were a bit behind.
Here is an approximation of horsepower numbers produced over the years:
2004: 875 (or more) fwhp
2003: 840 fwhp / 750 rwhp
2002: 825 fwhp / 735 rwhp
1998: 750 rwhp / 680 rwhp

All of this data is based on post-race dyno testing posted on jayski.com. All of the teams tend to underestimate and keep their real horsepower numbers a secret (which is why most sites tend to say no more than 800 horsepower).

With restricted motors:
420-450 flywheel horsepower, depending on the size of the restrictor plate.

[#[SoftAzerZx]]

F1 cars have 300-400 bhp per litre.

[infinkPoode]

F1 cars have 300-400 bhp per litre.

They also use pneumatically closed valve OHC engines, are not carbed..etc. The cost of an F1 engine is astronomical. Could probably h

NASCARs are much "cheaper" to run. Built much more equally. My and others points about the NASCAR engines are that they are simple 2v OHV carbed engines. 130hp+ per liter is alot out of that.

From the NEXTEL cup website.
From the ground up, including the engine, a race-ready Nextel Cup car costs about $125,000 to build

[#[SoftAzerZx]]

They also use pneumatically closed valve OHC engines, are not carbed..etc. The cost of an F1 engine is astronomical. Could probably h

NASCARs are much "cheaper" to run. Built much more equally. My and others points about the NASCAR engines are that they are simple 2v OHV carbed engines. 130hp+ per liter is alot out of that.

From the NEXTEL cup website.

Jeeeez...only 2 valves !? Oh ok, I understand.

Anyway, 750 bhp on stock nascar slicks around Chigago streets should be quite exhilarating.