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#1
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Considering that I am barely an amateur when it comes to racing. I was hoping some of the pros from the site could give me some tips on how to improve my time. Whether it be mechanical or technique tips I'd like to hear them.
This was my best run at the reunion. Nothing mechanical was touched other than adjusting my tire pressure to assure the tires were planted correctly. ![]() R/T - .529 (I'm aware I tend to dose at the line.) 60' - 2.305 330 - 6.069 1/8 - 9.127 MPH - 81.00 1000- 11.707 1/4 - 13.848 MPH - 105.79 The car is a 454 with an M22 and 4.10 rear. Carb is a DZ from a Z. And before you get any bright ideas Dan. I don't want to hear any Mopar cracks! ![]()
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1969 Z28 1972 Corvette |
#2
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The are many ways to improve your times. First let Stefano drive and if the car don't break put Dru in it!!
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#3
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Oh brother. It is a given that I'm a lousy driver.
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1969 Z28 1972 Corvette |
#4
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Nope, Didn't say that. Its practice. Put Rob Clary in it or COPO Pete. No one can argue about there driving! Once the car gets pretty consistent with those guys driving then you can make changes. Hey, ask KP He has alot of lap time in race cars!! He will tell you what it is doing or not doing.
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#5
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Firstly, don't worry about the reaction time right now...I don't remember what tires you were running, but you're looking at picking up nearly 1/2 second on the big just by knocking .3 tenths off you're 60' time (each tenth off 60' time = 1.5 tenths on the other end)...a 2.0' short time is doable (with practice) on street tires and for sure on Polys. Are you running any clamps on your leafs? Dist/carb work could both help or hurt depending on where they're currently at...waddya got for an engine?
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#6
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Rob,
Traction bars but no clamps. Tires are M/T Indy Profiles. Carb is a 780 but unsure at this time what the innards are. I installed the Crane ignition w/Limiter in the distributor. Think the total advance was 38. Engine is an LS6. Intake is a hi-rise 163 rather than the low 569. That seems to be the only mod on it..
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1969 Z28 1972 Corvette |
#7
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Considering that I am barely an amateur when it comes to racing. I was hoping some of the pros from the site could give me some tips on how to improve my time. Whether it be mechanical or technique tips I'd like to hear them.
quote Darren Spray It (NOS)..........................LOL......That will get your attention real quick Ken
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![]() The Best things in life......Aren't Things |
#8
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I agree with Rob, there is plenty of gain in your 60' time. If you have traction bars already installed, how hard are you hitting the tires? Is the car bogging, spinning, or hopping? In my amatuer opinion, there is almost as much to gain by suspension tuning as there is to engine tuning.
Another tip is to try slipping the clutch for the first 5-10 feet, it keeps the rpm's up. Be careful though, you might smell the clutch burning! I tried it twice so far, the first time I was rewarded with a 2.17 60' time, the next time I could smell the clutch so I never tried it again. My best 60' without slipping is a 2.22, so I'm almost down to that 2.17 - might trying slipping it again ![]()
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Marlin 70 Yenko Nova-350/360, 4speed M21, 4.10 Posi (Daddy's Ride) 69 SS Nova-396/375hp, 4speed M20, 3.55 Posi (Benjamin's Ride) 67 RS Camaro-327/250hp, 2speed Glide, & 3.08 Open (Danny's Ride) |
#9
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I was coming out of the hole easy then punching it. No bog or hopping. Plenty of power therefore the instances of spinning...
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1969 Z28 1972 Corvette |
#10
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If you are not boggin or hoppin, but spinning, I'd adjust the traction bars and air pressure, and come out harder. I've tried coming out easy, it killed my 60' and I could never make it up. I tuned the suspension a bit more, ie; added/moved the spring clamps around, and was able to raise my launch rpm by 500+ rpms. That brought my 60' down a tenth or two.
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Marlin 70 Yenko Nova-350/360, 4speed M21, 4.10 Posi (Daddy's Ride) 69 SS Nova-396/375hp, 4speed M20, 3.55 Posi (Benjamin's Ride) 67 RS Camaro-327/250hp, 2speed Glide, & 3.08 Open (Danny's Ride) |
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