I love summer but my car doesn't seem to like it too much. Last weekend in 90 degree heat I could only manage a best of 12.61 @ 109.4.Back in the spring in 50 degree weather, I was able to knock down some pretty consistent 12.0s-12.teens. I thought there was a problem with the car but after talking to some folks at the track found that their lack of performance was consistent to mine. How have you guys made out this season?

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94 Z28 auto.White with white wheels.A few mods. 12.01 @113.5 N/A with a 1.67 60' on bfgs

 

Heat is bad, high humidity is the killer. I was at Maple grove PA last weekend and Sat with 85 deg temp and 87% humidity the car ran 12.37 @ 108.9. The very next day with 80 deg temp and 44% humidity it ran a 12.04 @ 112.5 on the brakes. Just wait til those 50/50 days roll around and it will be 11's all day long.

Randy

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94Z 355 cid Hughes performance TH350 with 4000 TC, ported and polished 2.00, 1.57 valve heads, ported intake, 52mm TB, Bullet custom grind cam, Comp cams R series lifters, Hooker LT's, custom dual exh. with dynomax bullet mufflers,CSI elec. WP,MSD Digital 6+ ign,Autogage 5" monster tach with shiftlite,AC delete pulley, CC pro mag 1.6 rockers, Forged Ross pistons, 11:1 cr,B&M Pro stick shifter, eagle rods, polished stock crank,balanced rotating assembly , 24lb SVO injectors,Nitrousworks wet kit, AFPR, pcmforless custom program, alston SFCs, boxed LCAs with relocation brackets, tubular panhard rod,chassis engineering 8-point rollbar with 5-point harness, BMR Trac Pak, moser 12 bolt with 4.10's,1LE DS,Hurst line lock, eibach drag launch kit and airbag, HAL 12 way adj struts,CE 3-way adj. shocks, 15x3.5 front and 15x8 rear Weld Draglites with 27x11.5x15 Hossier QTP's. 1.607 60ft 7.62 @ 89.62 mph 1/8 12.02 @ 110.48 mph on motor.
1.55 60ft 7.16 @ 96.04 mph 11.27 @ 118.41 mph (125 shot) Shooting for 10's
In memory of the greatest
#3 Dale Earnhardt The Intimidator

 

Well,last time out in the heat it was 98* and 90+% humidity with a 20 mph headwind,car couldnt break a 12.90 to save it's life.
Beginning of august came around,and got a 1/2 decent night at Cevil and thats when it set it's new N2O best,so yup,my car HATES hot weather.

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Dirk
1997 TA A4
11.251@119.3 1.52 60',7.132@95.39 1/8
The RacinLT1
RacinLT1 pic's

 

I've pretty much noticed a .4-.5 higher ET in the summer months. LT1's hate the heat and they hate the heat and high humidity even worse.

Marty

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97ChameleonTA
M6, Nitto DR's, Moroso Cold Air, Grot LT's, Hooker Catback, Crane 1.6RR's, 3.73 Strange 12-bolt, Cutout...
Best RT: .500
Best 60': 1.842
Best 1/8: 8.195 @ 87.26
Best 1/4: 12.682 @ 109.95 (1.858 60')
314.9RWHP
341.3RWTQ

 

Last year I ran an 11.865@113.57 MPH in about mid 40's, very little humidity.

Since then, I put a hydra rev-kit and 30lbs injectors in. Best was 11.924@113.92 MPH in high 70's, lotsa humidity.

Rather disapointing to me, but maybe I am making more power, but the weather is hurting me, hope so.

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1996 Z28 Camaro
2001 best 1/4 BFG DR's NA - 11.865@113.57 w/1.634 60', 1/8 - 7.563@89.82mph Best 1/4 MPH 114.82 - Best 1/8 MPH 90.73 - 2002 Mid 11's NA, Mid 10's n2o

1989 GMC 1500 truck for work 18.1@73 305
8 cats to feed clean after 1999 V6 Mustang 5 speed
15.358@89.47 MPH w/ 2.227 60'
15.364@90.92 MPH w/ 2.383 60'

My Z28

 

Have any of you tried any fuel adatives to help stop knok retard? It seems to help on my car.

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'69camaro & '99 camaro Ls1 Z28, Pewter, spoiler kit, Borla, air box mods,K&N, egr mod, Mobil 1, HPP3, 160 Hypertech therostate,and N/X 20920 wet system

N/A 8.507 @ 84mph in 1/8
13.216 @ 104.557 in 1/4
60ft. - 2.001

NOS 125 shot 7.848 @ 93.280 1/8th
12.029 @ 118.095 1/4
on Goodyear GSC's

NOS 150 shot
7.404 @ 93.679 1/8th
11.597 @ 117.416 1/4
60 foot 1.674 on a slick

 

Knock retard isn't the problem in hot weather most of the time. What causes our cars to lose performance is the fact that hot humid air is less dense and has less oxygen in it. Humidity is the percentage of water in the air, the more water in the air the less oxygen that can be in it. Therfore, less oxygen less performance, and this is true whether it is 90 degs or 50 degs, it's just that hot weather magnifies the problem.

Randy

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94Z 355 cid Hughes performance TH350 with 4000 TC, ported and polished 2.00, 1.57 valve heads, ported intake, 52mm TB, Bullet custom grind cam, Comp cams R series lifters, Hooker LT's, custom dual exh. with dynomax bullet mufflers,CSI elec. WP,MSD Digital 6+ ign,Autogage 5" monster tach with shiftlite,AC delete pulley, CC pro mag 1.6 rockers, Forged Ross pistons, 11:1 cr,B&M Pro stick shifter, eagle rods, polished stock crank,balanced rotating assembly , 24lb SVO injectors,Nitrousworks wet kit, AFPR, pcmforless custom program, alston SFCs, boxed LCAs with relocation brackets, tubular panhard rod,chassis engineering 8-point rollbar with 5-point harness, BMR Trac Pak, moser 12 bolt with 4.10's,1LE DS,Hurst line lock, eibach drag launch kit and airbag, HAL 12 way adj struts,CE 3-way adj. shocks, 15x3.5 front and 15x8 rear Weld Draglites with 27x11.5x15 Hossier QTP's. 1.607 60ft 7.62 @ 89.62 mph 1/8 12.02 @ 110.48 mph on motor.
1.55 60ft 7.16 @ 96.04 mph 11.27 @ 118.41 mph (125 shot) Shooting for 10's
In memory of the greatest
#3 Dale Earnhardt The Intimidator