Forum: HoseHeads Sprint Car General Forum (go)
Moderators: dirtonly  /  dmantx  /  hosehead

I agree that its hard to say whether those dyno #s are correct or maybe embellished a bit, about like gas mileage stickers on new vehicles. It would be interesting to know if the buyer of the motor ever has them independently tested or if thats always on the builders dyno.

As far as Knoxville last year I think the lower than normal temps and not being as humid and heavy of air as they normally get in Kville for the nationals made a big difference in the power they were getting out of those motors. And along with that extra power comes running the motors more on the edge and therefore more possibility of blowups.

http://gph.is/XMLGff

Cheers!

Luna's Ford engine style that won 2 WoO titles and 3 
Kings Royals before a weight rule against the best EVER
in their prime and now DOMINATES super dirt late model
racing is no longer allowed/wanted in a WoO sprint
car.... Was Luna a miracle worker?

Hence the invalidity of (mines got more ponies than yours theory) the fluctuation from one dyno to the next (in my world) is rather huge, dyno numbers are great and obviously quite interesting, it makes one notice where the most bang for the buck is and items worthy of use, honestly, A dyno's use is mainly for a engine producing maximum power without destroying anything through its targeted cycle before freshening , thier use for a typical racer means keep it fueled correct and happy , granted in all competition the margin for catastrophie will be pushed to the limit, I remember when a good ascs 360 was 625 ish range , with todays inovations in injection, headers, cams and ignition I dont see it unobtainable hitting 680, why not? when you add up 10-7-6 hp increases here and there, its right on the money, and fueld to kill? heck, it'll impress you when a motor goes into Kamakazzie mode.. the real question here is, how much HP can it make for how long?

9000 rpms thats funny, most 410 motors peak around 7200-7500 rpm and the run around 8000-8300 rpms.

Anything over that is most likely wheel spin, you can take the same motor and gear with different drivers and get as much as 300-400 rpms different between the two

Rahmers billet block that was outlawed was the first engine that I heard had over 900HP and spun over 9K rpm..

The 900hp is not that hard to believe,,, and with the lightening of the valve train over the years, 9k is surely on the cards.

Even the "cheaper" 358's are now turing over 8K

well Kelly, maybe you can put some death to a portion of this debate?, what % of your mills do you still utilize a rev kit? what portion still use a rocker stud and girdle type configuration? , I remember back when a stud girdle and rev kit ment you had some nice stuff and spinning rather large rpm, now the valve train has went on a diet and most (obviously) use a rocker shaft style assembly , I cant familiarize myself with the 358's but to my understanding the iron headed motors are becoming just as bad ass as a 360? I dont think most the figures are too far off HP wise , forgive me for kickn the 950 # out there, but anybody willing to brag about "our" sport tends to streach the #'s a little, afterall, most new comers dont care anyway thier still fast,, Although, nobody likes to let the cat outa the bag , is it me or is there a big white elephant in the room?