kenimpzoom
Rear Admiral
- Joined
- Jul 13, 2002
- Messages
- 4,807
For 2006 what engines are the big three putting in their NASCAR cars.<br /><br />Is Chevy still using the SBC or have they stepped up to the LS1 blocks?<br /><br />Ken
These figures seem a little low when you put them up against an F1 engine.<br />3.0 ltr (183 cubic inch) 900 bhp 17000 rpm naturally aspirated.Originally posted by QC:<br /> KIZ,<br /><br />A little more for you. They are all carbureted, naturally aspirated (no turbo or blower), push rod and 358 cubes max. They are putting out around 800 bhp in non-restrictor plate config and are hitting around 9000 RPM twice every lap
<br /><br /><br />The lap record at a track like Dayton is around 220 MPH for a nascar car BUT they keep removeing HP to keep them down in the 195 MPH range <br /><br /><br />tommays
Well, then that gets complicated. I think the SB2 was kinda the forerunner to the LS1 series of small blocks. I think what you'll have is a short skirt block (good old small block chevy) with the new LS1 valve configuration (IEIEIEIE). GM tried or wanted to use that engine in NASCAR long before the LS1 came out in the cars, and NASCAR wouldn't let them. So I don't know if the LS1 is truly anything like it or not.<br /><br />
That says to me that the GM engine is the LS1 basically. Cause that's what makes an LS1 engine different from a good old SBC, it looks like a Ford! Deep skirt block and IEIEIEIE valve arrangement. (By-the-Way SBC's valves are arranged IEIEEIEI)
True RPJS, but what's the weight of an F1 car? 1500lbs? 700kg? Well a NASCAR CUP car is 3400lbs (1545kg). Install that Ferrari engine in Jeff Gordon's car, and if it could get going, it wouldn't hit that 19,000rpm limiter if it wanted to. Car would be too heavy, and the motor wouldn't have the TORQUE to get it there. Put a NASCAR CUP engine in an F1 (yeah, like it would fit!) and the car would still hit the same top speed, it would just accelerate slower once the car was moving. But it sure would be neat to hear a 358 cubic inch (5.7liter) V-8 rumble through that tunnel in Monaco!Originally posted by RPJS:<br />These figures seem a little low when you put them up against an F1 engine.<br />3.0 ltr (183 cubic inch) 900 bhp 17000 rpm naturally aspirated.Originally posted by QC:<br /> KIZ,<br /><br />A little more for you. They are all carbureted, naturally aspirated (no turbo or blower), push rod and 358 cubes max. They are putting out around 800 bhp in non-restrictor plate config and are hitting around 9000 RPM twice every lap
TilliamWe,<br /><br />Actually . . . horsepower basically translates directly to top speed. If you put the F1 engine in a NASCAR chassis and geared it for the proper WOT RPM at top speed (very similar to the prop issue) it would reach a higher top speed and the reverse is also true, you put the NASCAR engine in the F1 car and it would be slower . . .<br /><br />I think where you are getting messed up is that the NASCAR engine produces more torque, so if geared properly it should accelerate the F1 car faster than its original engine. However, it would definitely be slower at top speed; bhp equals work, speed is work. The total car weight would be heavier for the F1 car repower and lighter for the Cup car repower which also would favor the Cup car with the F1 engine in a top speed comparison to its original engine.
That's what I was describing in my first post, the first part. That engine has been around a while. And as I said, NASCAR banned it for a few years, before they let GM use it. <br />Oh, and at the same time, the only thing different between the Pontiac, Olds, and Chevies, were the valve covers!
You should believe me anyway. . . It's a math thing
<br /><br />Think about it this way, if you have a turbine that turns 100,000 RPM and devlops 1200 bhp it will beat both examples with only 63 lb/ft. torque. Yes it must be geared correctly and I don't know of any transmissions that would do it (maybe Helicopter turbine to blade tranny?), but the higher horsepower rig of the same weight will go faster at top speed.<br /><br />This happens to be my favorite topic, application of horsepower, not NASCAR. I think NASCAR is about #3, boats has gotta be #2 
