Should it be clattering at this low boost?
yea. I live in Watson. To me it’s not worth the hassle. I’d have to tune the car for that. I don’t have an ethanol sensor. My injectors aren’t big enough. My fuel system will not support ethanol yet. I drive the car too much to have to worry about getting fuel. Switching between tunes all the time does not interest me. When it gets to be more common, then I’ll switch. It’s just not an option for me right now.
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From: Ohio
My gen 3 4.8 did 600 on 11 PSI through a TH400 with a stock converter. Comparing dyno results is pretty hard to do though.
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Agreed, peaks weird, but still averages 810ft/lb from 2800-5800. I geared it accordingly, and it's fun to drive, all while being easy on the motor. I've seen cars that have prettier dyno graphs, with better "power/area under the curve", but doesn't translate come track time.
Ya those are 5.3 numbers not cammed 6.0.
Those aren't good examples lol. I got booted NA for running 11.3 in a 6.0L NA 4k lb IRS sedan on 275-17's so an 11.4 in a boosted lighter solid axle car to me isn't very impressive.
As far as 10.3 goes, I ran that (with cage) on 13lbs still on a 17" 275 tire so again not very impressive from a lighter car on 19lbs. Only got faster from there... I could let off at the 1/8th and coast to a 10.0 lol
Meh, no biggie. Long as it runs decent on the track/street, that's the real measuring stick. For a full weight everything intact street car, I'm satisfied. Another thing, show me a NA 365 cube motor putting down 510, and let's see how it drives. I think the real question should be, what are you guys running at the track? Top is spring pressure, bottom is turned up, 19ish i think. Take with a grain of salt, still on the 7.5 so no boosted launches. Bottom slip is on a tire, whereas the top was still on a 320 compound 315.
As far as 10.3 goes, I ran that (with cage) on 13lbs still on a 17" 275 tire so again not very impressive from a lighter car on 19lbs. Only got faster from there... I could let off at the 1/8th and coast to a 10.0 lol
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Verdad Gallardo TECH Junkie
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Ya those are 5.3 numbers not cammed 6.0.
Those aren't good examples lol. I got booted NA for running 11.3 in a 6.0L NA 4k lb IRS sedan on 275-17's so an 11.4 in a boosted lighter solid axle car to me isn't very impressive.
As far as 10.3 goes, I ran that (with cage) on 13lbs still on a 17" 275 tire so again not very impressive from a lighter car on 19lbs. Only got faster from there... I could let off at the 1/8th and coast to a 10.0 lol
Those aren't good examples lol. I got booted NA for running 11.3 in a 6.0L NA 4k lb IRS sedan on 275-17's so an 11.4 in a boosted lighter solid axle car to me isn't very impressive.
As far as 10.3 goes, I ran that (with cage) on 13lbs still on a 17" 275 tire so again not very impressive from a lighter car on 19lbs. Only got faster from there... I could let off at the 1/8th and coast to a 10.0 lol
TECH Junkie
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Ya those are 5.3 numbers not cammed 6.0.
Those aren't good examples lol. I got booted NA for running 11.3 in a 6.0L NA 4k lb IRS sedan on 275-17's so an 11.4 in a boosted lighter solid axle car to me isn't very impressive.
As far as 10.3 goes, I ran that (with cage) on 13lbs still on a 17" 275 tire so again not very impressive from a lighter car on 19lbs. Only got faster from there... I could let off at the 1/8th and coast to a 10.0 lol
Those aren't good examples lol. I got booted NA for running 11.3 in a 6.0L NA 4k lb IRS sedan on 275-17's so an 11.4 in a boosted lighter solid axle car to me isn't very impressive.
As far as 10.3 goes, I ran that (with cage) on 13lbs still on a 17" 275 tire so again not very impressive from a lighter car on 19lbs. Only got faster from there... I could let off at the 1/8th and coast to a 10.0 lol
So does it sound unreasonable for me to think i'm around 580-600 rear on 10lbs? mods below in my sig. 60lbs injectors im at 75% duty cycle at 11.5 AFR. Thats how i was guesstimating. just wondering.
https://www.injectorrx.com/fuel-inje...ze-calculator/
Theres several calculators online to check against 1 another.
Theres several calculators online to check against 1 another.
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Hard to say man. Dynos read different, just many different variables in the mix. Best thing I can tell you is, don't get hung up on dyno numbers. Take it to the track and run it, that's the best way to see imo. So long as you can leave hard, and not baby it, that will give you the best picture of the power it is making.
Hard to say man. Dynos read different, just many different variables in the mix. Best thing I can tell you is, don't get hung up on dyno numbers. Take it to the track and run it, that's the best way to see imo. So long as you can leave hard, and not baby it, that will give you the best picture of the power it is making.
Two things, one, wasn't at all touted as impressive, two, say what you want but I guarantee you that you were coming out swinging.... which I've yet to do. I'm sure you will come back with something like "this was with 3 dead holes, and on an uphill track". As you can see, the car isn't a priority, as i've been on this 7.5 for 3 years now, and haven't cared to get more aggressive with the tune. I would wager that simply being able to employ the transbrake and leave like a boosted car should, things would probably be different. But I just don't care enough to do it (upgrade hardware).
Originally Posted by Game ova
Long as it runs decent on the track/street, that's the real measuring stick. For a full weight everything intact street car, I'm satisfied. Another thing, show me a NA 365 cube motor putting down 510, and let's see how it drives. I think the real question should be, what are you guys running at the track?
Everyone talks about dyno's and how they vary etc....The track has just as many or MORE variables. Dyno's can vary by say 50whp.....you go to the track and have a crap 60' and your trap can say you're making 100-150whp less the car is actually making. And for those that say 60' doesn't impact trap, I've seen first hand decreasing 60' INCREASING trap speed.
11 Second Club
Joined: Mar 2012
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From: South Florida
I also agree with spider. Taking a car to the track is a good indication of what the car can do from a dig. But. As my car bogs down to 23xx rpm it sure does skew the avg. power the car can put down. Also as said. Running this here & that there is really not a good comparison of cars. It's really just like comparing dyno numbers. As Game Ova stated his car "can" be faster. It's just not on kill mode. As my car don't do good at track which a lot of people use to put down my car. Hey, we're all friends.. right? Lol.
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From: Ohio
I don't see how people can possibly say that 60' doesn't effect trap speed. You are at a faster MPH when you start that last 1260 feet.
If you started an additional 60' behind the starting line and passed the tree going 30 mph, you're going to cross the quarter mile at a higher speed than launching at the tree.
If you started an additional 60' behind the starting line and passed the tree going 30 mph, you're going to cross the quarter mile at a higher speed than launching at the tree.
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I don't see how people can possibly say that 60' doesn't effect trap speed. You are at a faster MPH when you start that last 1260 feet.
If you started an additional 60' behind the starting line and passed the tree going 30 mph, you're going to cross the quarter mile at a higher speed than launching at the tree.
If you started an additional 60' behind the starting line and passed the tree going 30 mph, you're going to cross the quarter mile at a higher speed than launching at the tree.
Where did anyone say 60' doesn't effect trap speed. The key is to launch the car the same every time not really being aggressive for ET just a good consistent launch then watch trap speed. If something out of the normal like a major bog or major spin happens then disregard the result. This is while tuning for power of course. People have done it this way for years even before EFI.