Dynotune.

 

Looking forward to seeing the results. Good luck.

 

^^^^^ me, too...Good luck with it today...

--Alan

 

Thanks guys, I hope to still make the track... but my freakin' 15x10 Prostars are rubbing still even after caliper grinding last night. I'm going to run home today after work and go nuts with the grinder and see if I can get it to stop. Gonna put me at the track a little later than I like but I should still have time to get a few passes in. Part that sucks is that our track tends to fade pretty fast on test & tune nights, so I won't get ideal traction.

We'll see!

 

did you try cleaning up the inside of the wheel as well? when mine rubbed I had to clean up the slag on the inside of the wheel as well so it would stop rubbing

 

Bandit, no, I bought them used, but I'll take a look at that today, thanks!

 

This is a serious hijack of the thread but, Javier good luck tonight. I too am looking forward to knowing how you do. PM me the info and a pic if you get one to put up on Frank's site...

 

A friend of mine with the LE2 just dynoed 407rwhp through a 9"!

I think whats holding me back is the Granatelli MAF, bad plugs, and bad gas! Cars going in for a tune in April/May.

 

Good luck Javier (even though you're probably at the track now ). I know this has been a long time comin'.

 

That original post is a bit old, did Kearn ever get the problems resolved? I agree that revving it past 6K isn't gonna do much good. It peaked at 6K with 352 rwhp. With heads, that's kinda low, don't you guys think? Also, the LE2.2 cam is similar to a 306 or 847, but improved correct? I would figure close to 400 rwhp by 6000 rpms, maybe 6500 at most. My car peaked at 5850 with 358 rwhp. It was over 350 rwhp by 5300 rpms. It also looks a good bit low throughout the chart, I'd say its down by over 20 rwhp at 4K. I know I sound like a broken record, but I'd degree the cam. I've seen too many of these cars make poo poo power for there to be some magic that makes some good and some bad. Its gotta be the install.

 

Good, I'm glad to hear that as I knew there was more in the car. Like you I'm sorting out Gremlins and found the intake gasket leaking, headers leaking, the fuel pressure guage reading wrong and a tiny vacuum leak from a rubber vacuum hose. Think the issue is it takes a lot of time to work these things out and most never do.

Thanks for thinking about me!!

 

Pull a couple of your plugs and see if they are black. Most likely NOT the tune and more like an exhaust vacuum leak or bad 02's. I'm a big believer in a routine change of 02's as I've found they should be just part of normal maintance.

You tune for both full power and drivability. Usually you don't have to touch the drivability areas of the charts unless there are issues or things like changing injector size, MAF size, etc. and in your case it's mild enough to not worry about driving tune. The 02 sensors monitor daily driving.

1.03 is 1.03. The dyno always corrects up in hotter weather unless something really strange is going on. SAE is set for a 29.6 barometric pressure and 77 degrees while standard is 29.9.92 and 60 degrees. That's also why standard reads a little higher as it looks at better weather.

Believe you said it was 90 degrees in Chicago which is I think around 700 feet above sea level and would explain exactly why the dyno correct the numbers up. NOT down unless you had very unusual weather conditions. (like unheard of)

I've said this before so I'll make it brief…………. People who hate dyno's.....don't know dyno's. Every major automotive sport except top fuel classes use dyno's and every........EVERY NASCAR team uses a chassis dyno. You guys must know something they don't.

Dyno's are a friend, not a foe and are extremely reliable if you use the same dyno every time. Peak numbers mean a little and it's average hp within the intended rpm that puts the rubber on the road. After a dyno session the first thing I do is plug in the numbers in 100 rpm intervals into a spreadsheet to see what the average hp gain/loss is in each gear of a simulated 1/4th mile run.

Dyno's don't bite, but they may be a bit hard to understand if you're not used to them. So, get used to them.

 

[QUOTE=

I do think that the car IS running pig rich, and the car seems to me like it WAS tuned in 3 runs. Ill ask FLP tomorrow what they think about your statement.

I was thinking about having the car re-tuned by FLP or looked over rather, but dont know how much that will run me.

Greg[/QUOTE]

[QUOTE=Originally Posted by Denny McLain
A guy bought the LE heads and cam that was in a 385ci combo that made 445 rwhp. Today I was helping tune the car and it only made in the high 340 range with again the same heads and cam that made mid 400 range earlier. Now this is an auto so we don't expect it to dyo the same but we knew we were missing something.

The first thing we found was the airbox was overly restricting and by just unhooking the airbox we gained 18 hp. I'd like to try new 02's as that can also throw off peak power. Also the air quality this time of year isn't very good so take that into consideration.

He had the stock 48 mmTB and I'm going to try my spare 58 mm TB to see if that helps. Also I had an electric pump, a welded/ported LT4 intake and every other trick in the book including a year of tuning finding what the car wanted.[/QUOTE]

If anyone can find the optimal tune and combination in just 3 dyno pulls, they are worlds better than I am. When I made 445 rwhp in the 385ci combination mentioned above I was amazed at the people who said it couldn't have happened. Think the real answer is THEY couldn't figure out how or spend the time n effort to make it happen.

Like duh......it only took me a year and probably 150 dyno runs to find what the car wanted sorting out both tune and issues. If you not talented (evidently I'm not) it takes a tremendous amount of tenacity to optimize any car. Just how it works!!

Now is it worth the effort?? Probably not if your the average person, but if you want to hang with the big dogs making the big numbers you got to act like a big dog or be real damn lucky.