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08-13-2016, 04:30 PM | #21 |
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Re: suspension and ignition setup need help
It sounds like you are pretty much maxed out given the restrictions. I agree with Alan about testing the limits of launching be it thru timing events or other means. The testing never ceases for any of us...
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Rich Taylor I/SA - 321 |
08-13-2016, 05:11 PM | #22 |
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Re: suspension and ignition setup need help
Another engine builder, who is a friend of mine, and responsible for some historic performance, told me "it isn't so much that we know what makes the car go fast, it's that we know so much about what doesn't make it go fast, or even makes it go slower". All of that comes from testing, relentless, exhaustive, tedious testing. Unfortunately, there is no known substitute.
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Alan Roehrich 212A G/S |
08-13-2016, 05:11 PM | #23 |
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Re: suspension and ignition setup need help
Sneeky pete
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KEITH MAYERS 2 X somebody many X nobody |
08-13-2016, 08:59 PM | #24 |
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Re: suspension and ignition setup need help
Four wheel scales? 50/50 or better? Just some things to think about.
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08-13-2016, 09:35 PM | #25 |
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Re: suspension and ignition setup need help
After giving this some thought I maybe would be inclined to look to the other end of the track instead of beating a dead horse....err, tire I mean.
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Rich Taylor I/SA - 321 |
08-14-2016, 08:41 AM | #26 |
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Re: suspension and ignition setup need help
Do they check your tires other than size? Some companies sell products to rejuvenate your tires. Think about that and let it "soak" in.
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08-16-2016, 04:21 PM | #27 |
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Re: suspension and ignition setup need help
Can you retard the cam any? If so try that and bring the timing in more aggressive. Larger "worked on" intake, delay the secondary slightly on the carb. Also, I would try a 7" rim. By the picture the tire looks like it is starting to run over itself like it is to low on air. But, I know you do that to try and hook. The other way would be to put a 4.30 gear in it and let that hook and then try to be more aggressive with the timing and use more torque through the trans low gear setting. Also, do you have a soft hitting converter? By the way that is FLYING! for anything much less a very stock appearing car. Like everyone said testing, testing, testing. Keep up the good work.
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08-19-2016, 08:31 PM | #28 |
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Re: suspension and ignition setup need help
I raced one of these cars about 20+ years ago. It was a 331 small block, TH400 and 5.13 combination.
If you take a side view of your car and draw the imaginary lines through the rear control arms you will find the instant center of the car probably about 6-8 feet in front of you, maybe more. The IC needs to be about where the engine block/trans come together or at worse the front of the engine. According to the rules, you might be able to do the following. The UMI adjustable upper links really don't do much more than adjust the pinion angle, kind of like the upper link in a ladder bar car. So, if you can find another upper control arm - you only need one, cut it in half, mount the half to the rear and then have your stock arm mounted in front to the frame and bring it down on top of the half. Tack weld it there, do the other side and then pull them out to weld them up. Put these in and you just moved the IC where you need it with "stock" parts. I think you will be very pleased with the 60' after this modification. |
08-20-2016, 12:15 AM | #29 |
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Re: suspension and ignition setup need help
We downloaded this MicroSoft Excel file which was a big help in understanding, and getting the rear edge geometry set up in our 81 Malibu. All instructions are in the file. Measure the end point locations of all rear control arms and enter them in the spreadsheet. It will then calculate and graphically depict the Instant Center location and several other critical dimensions. You can then alter the numbers to see what you need to change to arrive at the Instant Center you desire. Good luck.
www.patooyee.com/calculators/4BarLinkV3.0c.xls
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Larry Merk |
08-22-2016, 05:50 AM | #30 | |
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Re: suspension and ignition setup need help
Quote:
The 2.10 1st gear is hurting not helping and who built the trans? What exactly is your performance goal? Last edited by 1320racer; 08-22-2016 at 06:13 AM. |
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