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  #16 (permalink)  
Old 06-08-2004, 08:36 AM
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Takes a wuss to run a NASCAR motor. I run a real man's NHRA motor!

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Old 06-10-2004, 12:32 PM
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Correct me if I'm wrong, I'm more of a suspension/chassis guy than an engine guy, but we're talking 8k redline range and that means things like titanium in the valve train, does it not?

Also.. do they not use restrictor plates any more?

Generally speaking, yep a NASCAR engine would be tuned for the higher RPM range. Like the article says, it would have a hotter cam. In general.. alot of the things that are done on hotrod engines that are generally left out on production (balancing, porting heads, matching air passages etc.) would be done. Forged cranks are used, at least I know that's a difference of NASCAR engines of yore..
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Old 06-10-2004, 03:48 PM
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What Makes A Nascar Motor Different

Read with interest, some know what they are talking about.
I built a Grandstock (Street Stock) in Virginia in 1984 & we raced it at Langley Track for two seasons. Experience & reading the Pro Tec's good stuff taught me how to keep a 351-Cleveland together. Race motors only like 104 octane fuel, race mortors like lots of extra clearences in their guts parts i/e the motor is three forths worn out the first time you light it off. Race motor don't like low rpm, as in 3,000 rpm and less. Bottom line, Race Motors ain't gonna work in a steet rig.
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  #19 (permalink)  
Old 06-10-2004, 04:18 PM
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this company builds crate motors from used winston cup parts, http://www.musclemotorparts.com/strip.htm check the build sheet and see for your self what the difference is (ofcourse the cams are different as they are ground for restrictor plate use, but this is as close to a nascar motor a mortal human is ever going to get on the street)
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Old 06-12-2004, 01:01 AM
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I race circle track, once we had the bright idea of dropping one of our spare engines in a friends nova, big mistake we didnt "cruise" for more than 30 min before we fouled out the plugs and ended up towing it back, along the way we also flattened out the lobes on the cam from too much low rpm, so the idea of having a "nascar" motor in a street driven car, even if you could get around all the other problems mentioned in all the previous posts, isn't a very good idea, I'm sure by now the person that wrote the original post has a better understanding. just thought I'd tell my little story to show that everyone has some "weak" moments!!! LOL......steve
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Old 06-12-2004, 09:56 PM
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LOL steve! sure sure I gotta Nascar motor too! It takes me to work everyday and idles good and dont overheat when I am stuck in traffic. Oh yeah Its also real fast! I can do 180 when my automatic hits overdrive and the airconditioning compressor is the only limitation to high rpm!
Seriously gang this i gotta nascar motor fib is almost as prevalent as the 3/4 cam story! hmmm with the cost of inflation 3/4 is now what? maybe the guy was trying to say he had an endurance type engine. who knows? I sure dont! I can imagine a real nascar motor would last about a day in real driving assuming if it could even have a torque range under 4500 rpm.
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Old 06-19-2004, 03:09 AM
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GM part # 12370848 Busch Grand National Engine Handbook

This book contains all the specs and clearances, bore and bearing, and recommended parts to build a "competitive" Grand National Engine.

If you'd like one, you could build it from their lists. I'm not sure how well it'd do at 3krpms in stop and go traffic for a daily driver, but I'd like to see how it does in a quarter mile with the right gears. If it's built to last for 500 miles, that's about 2000 quarter mile passes. Force doesn't build any that last like that..... LOL
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