Dave Morgen ect. -Please Help - Super Street Car launch

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dragrace67camro
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Dave Morgen ect. -Please Help - Super Street Car launch

#1 Post by dragrace67camro » Sat May 10, 2008 6:26 pm

Hello
My name is Dave I run a 1967 camaro I race Super Street ( 10.90 ) right now And I do pretty well in super street but the car will run 9.60 and would like to run Super Gas ( 9.90 ) The problem is I dont have a tube chasie car and it is little heavy 2775 empty 3000 with me and fuel
and it will not leave hard enought to cut a light on a .400 pro tree in super street we use a.500 tree and cary .075- .080 in the box to cut a .015 light and when sun shines on tree in the later rounds I have to put .060 or so in the box when the blubs look like they are already on. As you can see I need the car to leave about .030 or more quicker so I can run Super Gas .400 tree .
Car Details
2775 lb empty 3000with driver race ready
lader bar car 3 deg down in front also tried 0 deg
3 deg down pin angle
ford 9"in rear end 4.30 gear also have a set of 4.56 but was trying to keep RPM's under control at top end
tire is not a 13.5 X29.5 95" cir. M/T tire I have been looking at 14x31 goodyear with 97" cir.
cant fit any bigger tire camaro wheel well is very small
1.75. inch of tavel on front end
468 cu BBC 1050 dom. carb 875 hp at the flywheel 575 foot pounds
26." tall front tire ( thinking 25" might help little )
2 speed trans with stock first gear
launch is 5200 on trans brake have tired up to 5500 ( no help )
QA1 coil overs with 110 pound springs double adj.
moroso trick springs in front with 90/10 shocks

to run 10.90 we run about 3 second of stop and stop is on a .10 that when it stops spinning

60 ft all out is about 1.37 -1.40 but almost never run off the stop
on the stop 60ft is 1.680. and shift and 1.00 seconds

I get almost one full rotation out of the rear tire before wheels up to break beams I have tried the rear end coil overs full soft seems to 60 ft better BUT react slower :-( -- I have tried lower air in rear tires all the way to 7.5 all the way up to 13.5 I have been running @ 11.5

anything else you need to know please ask that all I can think of right now

I have lots of video and photos I will post link both

thank you in advance for any help anyone can offer

Dave
Attachments
launch-small.gif
1967 chevy Camaro 500 cu 13.5to 1 comp.

dragrace67camro
Posts: 35
Joined: Tue Jul 24, 2007 11:36 pm
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video

#2 Post by dragrace67camro » Sat May 10, 2008 6:29 pm

http://www.youtube.com/watch?v=JVKqUjKSI9M

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1967 chevy Camaro 500 cu 13.5to 1 comp.

dragrace67camro
Posts: 35
Joined: Tue Jul 24, 2007 11:36 pm
Location: SO CA.
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more

#3 Post by dragrace67camro » Sat May 10, 2008 6:34 pm

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http://www.youtube.com/watch?v=YORM5LnlNaY


photos of car at

launch photos http://www.redliners.us/camaro-new.htm

back of car before double adj. http://www.redliners.us/camaro-back.htm

front http://www.redliners.us/camaro-e.htm

I hope that someone can help I am really lost and dont know what to do
thanks again
Dave
1967 chevy Camaro 500 cu 13.5to 1 comp.

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70NOVA
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#4 Post by 70NOVA » Sun May 11, 2008 12:14 am

it seems like you have the stop coming on to fast take your 60 foot divide it by 60 that will tell you how much time to go 1 foot it takes aprox 1 foot to break the beams.
you dont have much weight transfer can you loosen the front end let it snap up just a thought

dragrace67camro
Posts: 35
Joined: Tue Jul 24, 2007 11:36 pm
Location: SO CA.
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#5 Post by dragrace67camro » Wed May 21, 2008 12:53 pm

70NOVA wrote:it seems like you have the stop coming on to fast take your 60 foot divide it by 60 that will tell you how much time to go 1 foot it takes aprox 1 foot to break the beams.
you dont have much weight transfer can you loosen the front end let it snap up just a thought
Thanks for the reply At this point I will try anything If I take my best 60 ft and div. by 60 comes ti 0.03 and I have the stop on for .10 tenth and in a thenth the wheels are up in the air a good 3-4 inches

just cant seemt to get it to jerk ( dead Hook ) the wheels out of the beams to get that faster reaction time I need to run super gas

I have ordered the new GoodYear tires they are 2 in big around and 1 full inch wider tread and have a stiff side wall part # is 2019

Well I hope this helps -- Any Other Ideas
1967 chevy Camaro 500 cu 13.5to 1 comp.

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stroker1
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#6 Post by stroker1 » Thu May 22, 2008 12:02 pm

If you are running 0.000 delay in the box and you still cant get quick enough for a .400 tree then you are gonna have to improve your vehicle reaction time. And it sounds like that's where you're headed. So you are on the right track. Maybe if you loosen the front it will help the jerk effect.

Also, if you are barely creeping into the beams it will help you to go a little deeper in. But you may find that you are not as consistant that way.

Ideally, you want to get the car to leave quick enuff to start putting some delay back into the box for the .400 tree, and then all you need is a delay adjustment to be right back on for the .500 tree.

I assume you are on a tranny brake. So is it on a relay? And what type of brake? There may be a way you can speed that up if nothing else works. Or maybe you can find a way that you are quicker on the button by placing it in a different location or changing the type of button you are using.

Good luck
'87 S10 stock suspension, Caltracs, 9" rearend, 1.82 Glide, 383 SBC,
Brodix Track1 Heads, 14:1 compression, 180 shot plate,
2" tube Hussler Headers, 1.38 60ft., 6.20 ET 1/8th, 109 MPH,
Still Tuning, more to come.

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stroker1
Posts: 333
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Location: Dunn, NC

#7 Post by stroker1 » Thu May 22, 2008 12:57 pm

One more thing to add. It's a wild shot but have you tried coming off the brake at a fairly low RPM and hit the converter harder? Normally I would say this would slow down your vehicle reaction time. But it might just let it hit the converter hard enuff to jerk the front end faster and cancel out the lower staging RPM. :roll:

Like I said, it's a wild idea but it's CHEAP!!

Stroker1
'87 S10 stock suspension, Caltracs, 9" rearend, 1.82 Glide, 383 SBC,
Brodix Track1 Heads, 14:1 compression, 180 shot plate,
2" tube Hussler Headers, 1.38 60ft., 6.20 ET 1/8th, 109 MPH,
Still Tuning, more to come.

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70NOVA
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Location: CHEEKTOWAGA NY

#8 Post by 70NOVA » Fri May 23, 2008 10:14 am

put the max air pressure in the front if the tires say 35 max thats what you want to put in that will decrease your roll out or get a set of smaller front tires

dragrace67camro
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#9 Post by dragrace67camro » Fri May 23, 2008 11:31 am

70NOVA wrote:put the max air pressure in the front if the tires say 35 max thats what you want to put in that will decrease your roll out or get a set of smaller front tires
I run the max Air now - but I have been thinking about going to a 25 in tall tire
I have 26 In now - How much quicker do you think 1 inch would be ??

thank you

Dave
1967 chevy Camaro 500 cu 13.5to 1 comp.

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johnh
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Joined: Thu Aug 09, 2007 8:16 am
Location: Maryland

#10 Post by johnh » Fri May 23, 2008 1:49 pm

dragrace67camro wrote:
70NOVA wrote:put the max air pressure in the front if the tires say 35 max thats what you want to put in that will decrease your roll out or get a set of smaller front tires
I run the max Air now - but I have been thinking about going to a 25 in tall tire
I have 26 In now - How much quicker do you think 1 inch would be ??

thank you

Dave

Why smaller?
6.01 @ 116 on 9 Inch Slicks

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70NOVA
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#11 Post by 70NOVA » Sat May 24, 2008 10:12 pm

smaller tire has less roll out so even if you drive through the beam it will be quicker
i dont know how much see if someone you know has a set you can use and go out test and tune

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