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305 shootin' for mid 13's

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Old Jun 7, 2005 | 08:36 PM
  #1  
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From: Chicago area
Car: 87 Z-28
Engine: 383 HSR w/supercharger, AFR heads
Transmission: 700r4 w/2500 stall
Axle/Gears: 3:73
305 shootin' for mid 13's

My mods are in my sig. My first time at the track I ran a 14.4 at 103 MPH with 2.3x 60' times. I was not happy (I know it is only a 305 but I really thought it would do better)
Since then I have installed an alcohol injection system, 27x11x15 slicks and have disconnected the front sway bar.
Now, prior to the alcohol system, my MSD-6BTM was pulling 20 degrees of timing at full boost. I hope now to be able run full timing.
So, next week I am going to run it again. Anyone want to guess the new times? Take a shot and I will post the actual times next week.
My hopes are 13.5s at 105 MPH.
Attached Thumbnails 305 shootin' for mid 13's-tires1.jpg  
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Old Jun 7, 2005 | 08:43 PM
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From: Montreal\Quebec|Canada
Car: Camaro Z281991 Engine: 5.7L/350 TPI Transmission: TH700R4 ··································· Car: Acura CL 1998
Engine: 3.0L/183
Transmission: 4 spd auto/OD
you should reach that 13.5 with the SC and Alc Inj ...

if not better
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Old Jun 7, 2005 | 08:48 PM
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From: Paxton, MA
Car: 1987 Camaro Z28
Engine: 335 TPI Stroker
Transmission: Tremec TKO 500
Axle/Gears: 10 bolt / 3.42
Should run faster than my car
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Old Jun 7, 2005 | 09:00 PM
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From: Chicago area
Car: 87 Z-28
Engine: 383 HSR w/supercharger, AFR heads
Transmission: 700r4 w/2500 stall
Axle/Gears: 3:73
This is off the topic, but I have watched the progress on your car TunedPort 355, and I must say- Nicely done!.
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Old Jun 7, 2005 | 09:05 PM
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From: Pittsburgh PA
Car: 89 Iroc-z
Engine: 555 BBC Turbo
Transmission: TH400
Axle/Gears: MWC 9” 3.00
13.5's at 105mph?? you should easily be able to hit that with 11psi on 305 and a cam....

get them 60 foots down into the 1.9's and see low low 13's at 105ish... with slicks, maybe you can hit some 1.7's and hit high high 12's.

i am doing 13.8 at 96 with no topend on a L98 stock TPI. that 105 trap speed i would think would be good for low low 13's
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Old Jun 7, 2005 | 09:51 PM
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From: Orland Park, IL
Car: 1984 Z28
Engine: SLOW carbed ls
Transmission: TH400 with brake, 8" PTC converter
Axle/Gears: moser 9" 4.11
tons of people are running mid 13s on mild 305s with no supercharger. something doesn't seem right at all.
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Old Jun 7, 2005 | 09:55 PM
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From: Oshkosh wi
Car: 77 Firebird
Engine: 454
Transmission: th350
Axle/Gears: 4.10
The slicks alone should get you into the mid to low 13's. Alcohol injection and more timing I think will get you in the 12's.
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Old Jun 7, 2005 | 10:52 PM
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From: Harford County, MD
Car: camaro sportcoupe
Engine: 7.0L
Transmission: G-Force GF5R
Axle/Gears: Moser 9"
103 mph is good for like LOW 13's, if not high 12's. with a decent 60', which i don't think you'll have a problem getting some 1.7/1.6's out of her, i'd think you'd be well into the 12's. 105mph would be good for like 12.7's.


a bit off topic, but can you get me the part number to the lakewood 70/30 struts your running?
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Old Jun 8, 2005 | 04:57 AM
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From: Chicago area
Car: 87 Z-28
Engine: 383 HSR w/supercharger, AFR heads
Transmission: 700r4 w/2500 stall
Axle/Gears: 3:73
Originally posted by xpndbl3
tons of people are running mid 13s on mild 305s with no supercharger. something doesn't seem right at all.
With the exception of the cam it is a stock 305. I agree that it does not sound right, I was thinkning that with all the timing being retarded, my power was being robbed.


a bit off topic, but can you get me the part number to the lakewood 70/30 struts your running?

Summit P/N: LAK-40500
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Old Jun 8, 2005 | 11:13 AM
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From: Harford County, MD
Car: camaro sportcoupe
Engine: 7.0L
Transmission: G-Force GF5R
Axle/Gears: Moser 9"
THANKS!!!! been looking for the p/n to those for a LOOOOOOONG time
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Old Jun 16, 2005 | 08:48 AM
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From: Chicago area
Car: 87 Z-28
Engine: 383 HSR w/supercharger, AFR heads
Transmission: 700r4 w/2500 stall
Axle/Gears: 3:73
Well, I got rained out. I will be going next week to test it out.
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Old Jun 25, 2005 | 08:10 AM
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From: Chicago area
Car: 87 Z-28
Engine: 383 HSR w/supercharger, AFR heads
Transmission: 700r4 w/2500 stall
Axle/Gears: 3:73
I ran it last night. It was 91 and humid, but the car ran pretty good.

60': 2.025
1/4: 13.81
1/4 MPH: 104.23

So I can see a big improvment over the last time out, plus the weather conditions were not as favorable as the first time out.
The best part of the night was when I raced a 2001 Camaro SS. My wife happened to be sitting by the friends of the guy driving the SS. She said they made some comments about the SS beating the third gen. Well, I won!! VIVA LA THIRD GEN!!!
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Old Jun 26, 2005 | 07:32 PM
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TunedPort 335's Avatar
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From: Paxton, MA
Car: 1987 Camaro Z28
Engine: 335 TPI Stroker
Transmission: Tremec TKO 500
Axle/Gears: 10 bolt / 3.42
Hmmm.. how bad are you spinning? What tires and launch method are you doing? That car should be noticeably quicker than mine with those mods. Although it was very hot, that trap speed shows room for quicker ET's though!
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Old Jun 26, 2005 | 08:04 PM
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From: Harford County, MD
Car: camaro sportcoupe
Engine: 7.0L
Transmission: G-Force GF5R
Axle/Gears: Moser 9"
hmmm...something is very messed up here. there is no reason you shouldn't be 60'ing better.
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Old Jun 30, 2005 | 11:44 AM
  #15  
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From: Chicago area
Car: 87 Z-28
Engine: 383 HSR w/supercharger, AFR heads
Transmission: 700r4 w/2500 stall
Axle/Gears: 3:73
I found that I am getting alot of blow by. When I reach about 9 pounds of boost, my PCV valve blows out of the valve cover. I have not done a compression test, but I believe that my rings are shot. This is no supprise on the stock bottom end.
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Old Jun 30, 2005 | 11:55 AM
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From: Harford County, MD
Car: camaro sportcoupe
Engine: 7.0L
Transmission: G-Force GF5R
Axle/Gears: Moser 9"
hope you get it all squared around. i like seein other fast 305's.
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Old Jul 9, 2005 | 11:17 PM
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From: Solomons Island Maryland
Car: 1991 Camaro RS
Engine: 4 bbl 305
Transmission: 700R4
pssssssssss hey ditch the fuel injection check out my sign and im all motor N/A
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Old Jul 10, 2005 | 06:15 PM
  #18  
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From: Harford County, MD
Car: camaro sportcoupe
Engine: 7.0L
Transmission: G-Force GF5R
Axle/Gears: Moser 9"
pssst, he's got 8 mph on you, that's like an additional 75hp. that mph is good for high 12's. which ain't too shabby if you ask me.


and i'm n/a and have 4mph over you and bonestock heads.

hope i'm not coming off like a jerk, just lettin you know. he is having more problems here than just the efi. if anything, it's helping his boosted application.
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Old Jul 10, 2005 | 10:00 PM
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From: Solomons Island Maryland
Car: 1991 Camaro RS
Engine: 4 bbl 305
Transmission: 700R4
my heads are stock too man good ole crappy swirl port LO3 heads i might have take a hair thick out of the ports with a dremel i should have port matched em to the intake but didnt a screw up on my part
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