mas28O Posted November 10, 2003 Share Posted November 10, 2003 Took my Lt1 240z to the dyno today. I was there for 3hours trying to make some more HP, but it was tuned in close allready. My HP was low but the torque was very good. 319hp 400.02 pounds of torque@2200 Quote Link to comment Share on other sites More sharing options...
Tim240z Posted November 10, 2003 Share Posted November 10, 2003 SSSAAAWWEEEET!!! 400 ft-lbs at 2200 that's pretty honking torque. time for the LT4 cam? Cool Quote Link to comment Share on other sites More sharing options...
Guest ls1z4me Posted November 10, 2003 Share Posted November 10, 2003 I think these are a little easier to read. Have you done any head work or other mods to the engine? Quote Link to comment Share on other sites More sharing options...
yo2001 Posted November 11, 2003 Share Posted November 11, 2003 That aint stock Nice number. Good powerband too. Quote Link to comment Share on other sites More sharing options...
Tim240z Posted November 11, 2003 Share Posted November 11, 2003 From another MAS280 post: Engine-- I ported the stock heads and put in a small cam. I still have the 24lb injectors but I have some 30lb ready to go. The car is not tuned at all and it is only shifting @ 5200 so I am not in the power band that long. I am at about 5000 rpm at the end of the track. I am using 235 drag radials 26" tires and as Scottie said it is all in the 60' not the power. Quote Link to comment Share on other sites More sharing options...
mas28O Posted November 11, 2003 Author Share Posted November 11, 2003 The motor does have bolt ons and some head work. I am looking for some other lt1 dyno runs to see if this is right. I would like to find some lt1 dyno runs using the 4l60e and 2600 TC. The TC might be the reason for the low HP. Quote Link to comment Share on other sites More sharing options...
dmyntti Posted November 11, 2003 Share Posted November 11, 2003 Look at fbody.com and cz28.com for dyno sheets. In the LT1 message boards they often show their dyno results. Quote Link to comment Share on other sites More sharing options...
Scottie-GNZ Posted November 11, 2003 Share Posted November 11, 2003 Remember, you cannot compare dyno numbers unless all the pulls were from the same dyno under the same conditions. Comparing dyno numbers is water cooler talk. What you do with that number is more important and you have nothing to prove. Use your dyno numbers as an indicator of the progress YOU are making and let your timeslip do the talking. IOW, compare your dynos with your previous dyno numbers. Do not get caught up in the "mine is bigger than yours" game. If I did, I would be scared to line up against some of the 600, 700hp dyno monsters. The most HP and the biggest dyno numbers do not always win drag races. Quote Link to comment Share on other sites More sharing options...
Pyro Posted November 11, 2003 Share Posted November 11, 2003 Wow. 400 ft lb at 2200 rpm at the wheels is 480 ft lbs at the crank! Looks like a 7 liter turbo diesel torque curve. Are you sure that dyno is reading right???? Quote Link to comment Share on other sites More sharing options...
Guest Z-rific Posted November 11, 2003 Share Posted November 11, 2003 Listen to Scottie's advice. I've seen reports on how different dynos from different manufacturers give wwaaaayyyyy different results, testing the same car on each. A dyno is a great way to tune your setup and/or check improvements made by swapping parts, but don't read too much into the final number as it compares to a different car on a different dyno. Now I'm not saying the final number is useless. There's just no guarantee on how accurate it is. As a side note, I've read articles on how inaccurate some of the HP numbers from the car makers are. Seems like they like to exagerate a bit. But, with your 1/4 mile times, those numbers look very, very reasonable. Quote Link to comment Share on other sites More sharing options...
Scottie-GNZ Posted November 11, 2003 Share Posted November 11, 2003 But, with your 1/4 mile times, those numbers look very, very reasonable. This is what I stated in the other post before you did the dyno: "If I guess the weight w/driver at 2,750lbs, that's an estimated 320rwhp. " Looks to me like you are able to put every single HP effectively to the ground and that is what it is all about. Compare timeslips, not dyno numbers :D I would say with that low, flat torque, that is probably a very responsive machine on the street. Quote Link to comment Share on other sites More sharing options...
mas28O Posted November 11, 2003 Author Share Posted November 11, 2003 Scottie you where right on with the HP #. The lt1 makes for a very responsive street car. I will go back to the dyno in a few months when I install NOS. Mike Quote Link to comment Share on other sites More sharing options...
JustAFantaZ Posted November 12, 2003 Share Posted November 12, 2003 mas, check your e-mail. I saw a video clip of a Porsche vs a Hybrid V8 Fiat. The Porsche did 114mph, but it was a 13.20 second car. The Fiat was in the 11's@120ish. Why not get more cam? Quote Link to comment Share on other sites More sharing options...
Tim240z Posted November 12, 2003 Share Posted November 12, 2003 Yeah, I agree with more cam. With such a light car, you can stand to lose some bottom end torque as a tradeoff to get some top end power. 2000 rpm is pretty low for a torque peak, esp. in a little ol' car like a Z. Tim Quote Link to comment Share on other sites More sharing options...
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