They're pretty good figures, but you sound a little disappointed with the results, were you expecting more from it?? Are those figures corrected for engine horsepower or is it rear wheel?? How much torque is it putting out??
Quote:- "He didn't get beyond 6K rpm or even extend the fuel cut off because his reasoning was I still have stock bottom and stock rod bolts. Fair enough but I do have upgrade valve springs (918s), upgraded stock rocker trunions and hardened pushrods which he completely disregard."
Just fitting the upgraded springs etc isn't gonna stop the bottom end letting loose if something went wrong, so he was obviously being sensible & keeping the revs to a safe limit @ 6000rpm, was the power still climbing at those revs, or was it starting to tail off ??
Dyno's can be fickle things, as the oprators, on a lot of dynos, are able to "fudge" the readings to make them look as if the engine's more powerful than it really is. It sounds like your man is giving you a true reading, which is what you want really.
People really put too much store in what the readings of a dyno say. If the car feels strong on the road, turns the numbers at the track & gives a good feeling whilst driving, then that'd be good enough for me. After all, you don't drive a dyno
, it's what the car's capable of in the "real world" that matters, not hp figures.
Strangely enough, I visited a local motor racing shop a few weeks ago & they're just fitting in their new Dastec dyno which will take up to 1200 hp & they've asked if they can "borrow" my '69 to set it up, as they figured it's gonna be about the biggest car they'd physically fit on there. They want to know where to fit the cooling fans for optimum performance to cool the cars. Dunno whether to take them up on the offer of a free dyno run or not as the "numbers" aren't that important to me, after all the car is what it is
cheers...Nige
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