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  #16 (permalink)  
Old 10-30-2006, 02:44 PM
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Pulling the fronts is not the end of the road. Are you serious about Drag Racing or do you just want to yank the fronts?

What are you launching at? Can you launch harder without tire spin?

What's your shift point?

What are your 60' times?

I have talked to some guys locally and they said that about a 1.5 second 60' the fronts just started to come up, but that only happens in a properly sorted out car.

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  #17 (permalink)  
Old 10-30-2006, 03:00 PM
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Actually the rollbar/cage has been dropped to 11.49 or quicker.
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Old 10-31-2006, 05:00 AM
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and they ought to enforce safety rules for faster running cars. that said, 60 foot times are important, and yeap, no doubt tire spin, shift points, and just plain tuning are a good place to strat before ripping the engine out and going crazy for .50 seconds. i assume you ain't john force with multi million dollas of sponsor money.

does your track use traction compond? how much? you heating the tires first? are you using hard street tires? lot's and lots of things to consider before any serious engine work. from, oh, i dunno, a few weeks of experiance, it's often small details that give the greatest gain. don't look for elephants when a donkey will do the job.

patience. detail. think things out. innovate.

i have found 1/10 ths. before by little things like fuel pressure, a cool can, adding a gasket or new accelerator pump to a holley--or rejetting it. had a series of bad runs that was caused by a malfunction of the auto choke once.

i think you are close. keep tweaking.

and----------------run safe!
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Old 10-31-2006, 08:05 AM
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You did not state your MPH....
With that much CID i'd start looking at a mid 3's gear unless you run 1/8mi.

I believe in using the torque your engine produces not reving through it.

Our Turbo Buick's make alot of torque and we run a 3:42 gear with 231cid.

BBC's make alot of torque.. no sense in throwing it away with a high gear.

I'll bet your MPH is low and your engine is out of it's range at the end of the

1/4mi.

Nice looking car! I'll bet the guy's on Malibu site will be able to help.

BTW, The energy you use pulling the tires off the ground is not being used to
make it go forward... think about that awhile before making wheel stands your goal... I just smile when I see a car doing that when everyone else is amazed... I think to myself... he'd drop another few tenths if he's set up that suspension right.
~Scott
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  #20 (permalink)  
Old 10-31-2006, 10:48 AM
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There is also a difference between standing the car on it's bumper and pulling them 6" and carrying them out to the 60' mark. That's effective weight transfer as opposed to wrong suspension set up.
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Old 10-31-2006, 05:26 PM
 
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ok guys here is the ticket for this one

reaction ... .1022
60 FT ... 1.5360
330 ft ... 5.0698
1/8 ET ... 7.9547
1/8 MPH ... 84.95
1/4 ET ... 12.3533
1/4 MPH ... 108.62

now yes i heat up the tires good and yes its a slick 28 11.5
yes the car hooks really good no or not much tire spinning
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Old 10-31-2006, 08:45 PM
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That's a start, but we still need more.

What stall do you have in the torque convertor? What's your shift point andwhat are you crossing the finish line at RPM wise? That will give us some more info as to how much you have left on the top. Can you launch harder? Too much after that and it's pretty much trial an error until you reach all the power your car can make. Also, what color are your spark plugs? that will give an indication of overall mixture. Also, what elevation is the track you tested at. My fathers '64 Buick is a mid 12 second car at sea level but is low 13's way up here at 4200 feet in elevation. What was the temperature you tested at and was there a storm coming in? I have watched the barometer make a .3 second difference on some cars.

The point I'm trying to make is, we need almost all the information you can provide to come to a reasonable conclusion to help as opposed to just saying change this or that.
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  #23 (permalink)  
Old 11-01-2006, 03:57 AM
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Nice care you got there. You car looks tuff in those pics.
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  #24 (permalink)  
Old 11-01-2006, 06:33 AM
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That car is hooking excellent with a 1.53 60.
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  #25 (permalink)  
Old 11-01-2006, 07:25 AM
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What's the engine RPM shift points and RPM at the finish?
Is it still pulling or flat?

My first guess is to tall a gear, you're getting great 60' times so I tend to think it's quit pulling well before the finish, but again that's just a guess.
If so, playing with tire size and gears you can get all kinds of combo's.
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Old 11-01-2006, 07:44 AM
 

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Quote:
Originally Posted by kardoc
ok guys here is the ticket for this one

reaction ... .1022
60 FT ... 1.5360
330 ft ... 5.0698
1/8 ET ... 7.9547
1/8 MPH ... 84.95
1/4 ET ... 12.3533
1/4 MPH ... 108.62

now yes i heat up the tires good and yes its a slick 28 11.5
yes the car hooks really good no or not much tire spinning
I analize my 1/4 mile time tickets a lot..... A quick scan of yours tells me your car is set up for the 1/8 mile......which means you pull great till about half track, then something falls flat. I'd put that thing on a dyno, I bet your fuel pressure or something fairly simple is wrong. 108 mph trap speeds for your combo seems really low. Just to let you know, I run a 4 clyinder, 2.0 liter, runs 11.7's and traps 123 mph... (I tune for mph and find the e/t times will fall)....It took years to get there...not just one run. So stick in there, be smart, you'll get it.
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  #27 (permalink)  
Old 11-01-2006, 08:21 AM
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Quote:
428ho :My first guess is to tall a gear,
Agree 100%

Quote:
I analize my 1/4 mile time tickets a lot..... A quick scan of yours tells me your car is set up for the 1/8 mile......which means you pull great till about half track, then something falls flat. I'd put that thing on a dyno, I bet your fuel pressure or something fairly simple is wrong. 108 mph trap speeds for your combo seems really low. Just to let you know, I run a 4 clyinder, 2.0 liter, runs 11.7's and traps 123 mph... (I tune for mph and find the e/t times will fall)....It took years to get there...not just one run. So stick in there, be smart, you'll get it.
Great advice... agree again!!!!

I look at MPH more than anything. If your car's making power it'll run a good MPH. Your 60' would not change much running a 3:40-3:50 gear but I'd bet your MPH would increase at least 4mph. Great 60' by the way.

My 89 Turbo Maxima runs 13.40's @ 107.89mph. I can't launch the car hard so my ET suffers but the MPH justifys 12's. Yours is all at the begining of the track.
The Turbo Buick Camaro (86 Camaro) with 3.8L buick was running a 1.48 60' with 6psi boost off foot brake ran a [email protected] on pump gas through the mufflers on a ET Street 18lbs/boost total.
2 stroke turbo's car is making great power too but he's launch limited looking at the ET. (I know how that feels.. my Maxima is a 2.4 60

Anyhow... Gear change is needed... and then make some more top end power you'll be 11's in no time!
~Scott
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