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PostPosted: Sat Jan 30, 2010 11:11 am 
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Joined: Thu Dec 24, 2009 12:51 am
Posts: 129
First Name: Brudder Jake
Location: Va Beach, VA
Lose the weight - free horsepower. Every hundred pounds of sprung weight lost, weight supported by the springs, is a gain of 0.10 second.

Lighter wheels & tires, suspension pieces for unsprung weight is 70% reduction compared to sprung weight.
Lower vehicle height for mph helps. Air friction increases by the square for every ten mph.
Lower viscosity of engine oil equals more available power.
Little more duty cycle to injector ON time? I suggest this increase of ON time as suggested by others, carb guys would increase jet size until MPH dropped, then back up to previous jet.

Good luck.

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PostPosted: Sat Jan 30, 2010 12:35 pm 
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Joined: Mon Jan 04, 2010 11:39 pm
Posts: 19
First Name: Paul
I've been tweaking and tweaking trying to get there...so close!

According to this website: http://www.dragtimes.com/da-density-...calculator.php DA was:

6:51 - 851
7:51 - 840
8:51 - 1004
9:51 - 1113
10:51 - 1192

My passes were at 7:06, 8:34, 9:35 & 10:09


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PostPosted: Sun Jan 31, 2010 1:13 am 
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Joined: Mon Dec 21, 2009 9:12 pm
Posts: 230
First Name: camaroman7d
Location: Vacaville, CA
Paul,
Without making some sort of change I don't see you getting that 11.50. Sure you may get an 11.599 at some point if you just keep running it and the stars line up. I'm not being a hater, you are just running very good times for the MPH you have. You need to find a little more power, or drop some weight from the car, if you want to run in the 11.50's consistently.

Ok how about this, have you tried both deep and shallow staging? If you shallow stage (just tickle the second beam) and you leave a bit early you can get a "running" start and this will help your 60' and might be enough to get you where you want to be. Of course deep staging will help your reaction time if you don't red light, this basically will shorten the track a smidge. Not sure either one of these will be enough. Have you tried different air filters? Or running without an air filter?

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[color=#0[youtube][/youtube]000BF]Royce NO XQSSS Bradley
1961 Buick Skylark
1970 Nova
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PostPosted: Sun Jan 31, 2010 10:04 am 
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Joined: Mon Jan 04, 2010 11:39 pm
Posts: 19
First Name: Paul
Aw hell Royce, I have no good reason to run 11.50's consistently...just wanted to see if I could get down there. The thing for me is for it to be consistent when I go out and do a little bracket racing...I think I'm there, although I go out early as I get skeered of the light when the pressure's on, LOL!

It's been an adventure setting up my car to get it to run at the strip. I've just had so much fun making it run well on the street/strip...and hitting 11.50's with no traction devices would, well, just be the cherry on top, LOL!


Oh...deep vs shallow...I red light if I deep stage, so I always shallow stage. My reaction times are usually less than .050 (except when it matters, LOL) so that's good.

I thought about removing the air cleaner on my cold air setup but just never got there.


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PostPosted: Sun Jan 31, 2010 2:20 pm 
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Joined: Mon Dec 21, 2009 9:12 pm
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First Name: camaroman7d
Location: Vacaville, CA
That's what makes it fun and keeps us coming back. Trying to improve or get that last tenth can be an obsession. Your car is very impressive and pretty well dialed in, that's when improvements are hard to come by. For a small block car, with no power adders, no "real" traction device (if I remember right you have trick springs), to run mid 11's in a real street car is very respectable.

I can't think of anything easy to get that last .05 - .1 second for you.

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[color=#0[youtube][/youtube]000BF]Royce NO XQSSS Bradley
1961 Buick Skylark
1970 Nova
Previous 6 time Camaro owner
http://community.webshots.com/user/camaroman7d[/color]


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PostPosted: Sun Jan 31, 2010 3:55 pm 
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Joined: Mon Jan 04, 2010 11:39 pm
Posts: 19
First Name: Paul
camaroman7d wrote:
That's what makes it fun and keeps us coming back. Trying to improve or get that last tenth can be an obsession.


Me obsess about something? No way! :mrgreen:


I have original 68 camaro six cylinder coil springs in the front and composite mono leaf springs in the back.

You know...maybe a little less fuel in the tank would get me .03?? I think I had about half a tank last time.


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PostPosted: Sun Jan 31, 2010 10:57 pm 
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Joined: Mon Dec 21, 2009 9:12 pm
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First Name: camaroman7d
Location: Vacaville, CA
paulm wrote:
You know...maybe a little less fuel in the tank would get me .03?? I think I had about half a tank last time.


That is worth a try, the downside is you could hurt your 60' due to the less weaight in a prime spot. You never know until you try. You figure just over 6lbs per gallon, depends on how big your tank is, but the weight savings could be decent.

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[color=#0[youtube][/youtube]000BF]Royce NO XQSSS Bradley
1961 Buick Skylark
1970 Nova
Previous 6 time Camaro owner
http://community.webshots.com/user/camaroman7d[/color]


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PostPosted: Sat Jan 15, 2011 8:28 pm 
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Joined: Mon Jan 04, 2010 11:39 pm
Posts: 19
First Name: Paul
No changes but got the right weather...

R/T .001
60 1.556
330 4.651
1/8 7.299
MPH 92.44
1000 9.605
1/4 11.578
MPH 114.33


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PostPosted: Sat Jan 15, 2011 11:36 pm 
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Joined: Sun Nov 29, 2009 8:44 am
Posts: 2761
First Name: Jim
Location: Anywhere and everywhere
very nice Paul!
I really need to work on getting quicker with mine.

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PostPosted: Wed May 11, 2011 3:43 pm 
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Joined: Mon May 10, 2010 5:46 pm
Posts: 19
First Name: Jay
Location: Yorkville IL.
@ your mph 113.xx you are dead nuts for your et. Take 1320 divided by your mph and the result is your et.

1320/ 113.4 = 11.64 This formula is quite accurate, at least as a goal to shoot for. Tune for a higher mph( more hp). and your et should follow. Ever since my mph went up around 118 my et has dropped, not where I want yet, but this is a good mark to shoot for. @ 118 my et should be 11.19 and best has been 11.43, but my goal for this year is 11.20. Time will tell.

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64 Chevelle
sbc 4 spd.
11.43 @ 119.9 mph


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