KIDIROC

This should be interesting. If you're running a 305 and it's naturally aspirated ie: no nitrous or blower/turbo, post your times and mods please. This can give me and others I'm sure a baseline on a future/current buildup. Also state if it's carbed, TPI or TBI. Thanks!

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Dan Young
1995 Z28/M6
Groton, CT
Not stock

1984 Z28/A4 - Prospective purchase
No times, cuz it ain't mine just yet!!!

[This message has been edited by KIDIROC (edited December 29, 2000).]

84305HO

Time and mods are in the signature but there
are a few faster guys.....(there always are!)

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Tom K.
84 Z-28 M5 305 L69 HO
pulleys,coil,3:73(stock)
Jet chip, fan switch,
Al dshaft,1.6 rockers,
LCAs and brackets,BFG DRs
14.20 @ 96.74 2.02 60ft

Craig84Z

iTrader: (2)

84305HO,
Good 1/4 time. Do you have new traction bars on that? That is a good 60' time. How much difference did the 1.6 rocker arms make and did you have to get taller valve covers? How much did the jetchip help? I just got the DH secondary rods for my carb. Haven't installed them yet. I'm assuming you have the 5spd since you have 3.73 gears.

KidIroc,
If you buy a 84 make sure it has the HO engine and a 5spd. You can add about .5 sec on the 1/4 if you get an auto tranny. The 305 HO was rated at 190hp vs. the 145hp 305. You have less mods to do to get your times down. The HO had electric fan, 4bbl quadrajet, dual snorkel air cleaner, and better cam.

84 Z28 305HO, 5spd, 220,000 miles, Edelbrock intake, Hedman headers, low restriction exh(w/cat), K&N air filter, air pump gone, AC gone, Best 1/4 so far 14.649 @ 94.77mph

Willie

iTrader: (1)

The incredible Tim Burgess has the fastest n/a 305 I know of. He ran a 12.61 with his immaculate '92 Z28. I know this for fact because he did it against me at our local track. I need not remind everyone that he drives his car daily, is emissions legal and hauls!! When he races, he does use his Hoosiers on all four corners and his "track" exhaust. His burnouts are done at 6,000 rpm and are awfully impressive.

Tim bought his car new and is dark metallic teal, the only year third gen Z28's were offered in this color. It also has a gray leather interior.

Tim moderates the Electronics board, so if you would like his extensive list of mods, e-mail him. I'm sure he'd be glad to share it.

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Willie

Supercharged 1987 305 IROC-Z, Daily-Driver, Emissions-Legal.
12.57 @ 111 mph.
12.04 @ 114 mph (50-hp nitrous).
http://members.optushome.com/au/downunder1/rides/willie/willie.html

1987 "20th Anniversary Commemorative Edition" Z28 Convertible -- Super Chevy Show Class Winner, 1998.

My custom front marker lamp assemblies:
http://members.optushome.com/au/downunder1/misc/lens.html

[This message has been edited by Willie (edited December 29, 2000).]

jbenge

iTrader: (2)

13.4 is the best I've done with my 305 so far. Check my signature for the mods.

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84 Camaro 305 ported & milled heads, 3 angle valve job, Edelbrock Performer RPM intake, Hedman full length headers, Accell ignition, Crane 274H cam, B&M 700R-4, 3000 stall speed, 4.10 gear,
M/T ET street tires
visit my website at http://www.geocities.com/jbenge/page1.html

Vader

I think my fuel gauge goes down the fastest, if that's what you wanted...

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Later,
Vader
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"No matter how hard you try you can't stop us now"
Adobe Acrobat Reader 4.0

ws6transam

My 305 does nearly 101 MPH in the quarter mile, and it's still the stock 133,000 mile shortblock. Everything else on the engine has been replaced though...

E/t 14.039 at 100.82 MPH. With Computer controlled Quadrajet. I think there's another 1 to 2 MPH left and about .4 seconds with tuning.

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Daniel Burk
http://www.isthq.com/~dan/fcar.html
'84 Trans Am WS6/L69
KB SFC, Moser axles, Torsen Diff. PST suspension, Braided stainless brake lines, Koni struts, 11-inch rear disks,Spohn Adj. torque arm,
Ported 305 heads w/1.94"intake valves, Comp Cams XE262H, Griffen alum. radiator,
Turbine Technologies 2500 stall converter, underdrive pulleys, Crane Hi-6 & more.
1.05g skidpad verified.
New best E/T! 14.039 at 100.82 MPH in 41 degree air at Stanton, Michigan.

84305HO

Reply to Craig84Z:
I have Spohns LCA's and relocation brackets
and BFG drag radials for enhanced traction.
Also for the Jet stage II chip I have a
160 thermostat and fan switch. I like to do
my mods in combinations to maximize effect.
The 1.6 roller tip rockers which is my only
real engine mod netted me about 1mph which
equates to about 10 hp and they fit under
stock valve covers.
Went to CK secondary rods which is one step
richer than the std DR L69 rod.

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Tom K.
84 Z-28 M5 305 L69 HO
pulleys,coil,3:73(stock)
Jet chip, fan switch,
Al dshaft,1.6 rockers,
LCAs and brackets,BFG DRs
14.20 @ 96.74 2.02 60ft

[This message has been edited by 84305HO (edited December 31, 2000).]

Rob P

iTrader: (1)

14.21@96mph. 92Z28convt 5spd 3:08 posi disc on 235 Eagle GA's. Hollow cat, alum drive shaft, ported intake plenum and runners, coolant bypass, CenterForce Clutch. Run was in perfect weather. Otherwise 14.5 all day.
Dyno 220.5 RWHP @ 4500rpm
313.5 ft/lbs torque @ 2500.
Not bad for a car rated at 205 at the flywheel!

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Rob P
89RSconvtZZ4TPI
92Z28convt5spd
71Impala convt 402BB
BETTER DRIVING THRU SUPERIOR HORSEPOWER!

Zepher

iTrader: (1)

my 86 Trans Am with my 305 LG4 motor and the mods in my sig gave me a 14.94@91.67mph.
This was my first time drag racing and that time was my 4th run.

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Zepher
'86 Pontiac Trans Am WS6, LG4 305, 5 Speed, CF DF Clutch,
Edelbrock 1406 Carb, Edelbrock Performer RPM 7101 Intake Manifold.
Edelbrock Open Element Air Cleaner: Flowmaster Exhaust, 160* Thermostat,
Grant GT Steering Wheel, MSD HEI Coil, Taylor 8mm Wires, Leather 96 Camaro SS Seats,
Alpine CD+Changer,Alpine V12 Amps, Premier TS-1040C Subs, Polk Audio highs/mids.
Best ET: 14.94@91.67
High Speed Run: 157mph
WS6 Trans Am

Craig84Z

iTrader: (2)

To 84305,
I said in above post I got DR rods. I got new AU rods. Got my letters mixed up. What brand roller rockers did you get? I am assuming the fan switch kicks the fan on at a lower temperature?
Thanks,
Craig

MEANGREEN

Any others?!?

Adam89F

Sorry, to nice to drag.

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West Coast Performance
1989 Formula 305 TBI

theformula

i will have some times for you in a few weeks after I race at Atco in jersey. I should do pretty good...

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91 Formula
305 TPI 5speed
1LE/G92/WS6
K&N, SLP airfoil, ported/polished plenum, March pulleys, TB coolant bypass,Crane AFPR(47psi),Crane Gold 1.6rrs,MSD coil,MSD6AL, Holley 9mm wires,Bosch O2sensor, SLP headers & catback,3:73s w/Auburn posi,160* t-stat,JET 195* fan switch, Macewen white face gauges, Autometer gauges, Zoom hi-performance clutch.
Street legal with stock throttle body, runners,intake manifold,cam, and heads.

chris83z28

I used to run a 14.9 with mine. I am now running a 16.2 with the 350. I guess I have a lot of tuning to do.

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1983 Camaro Z28
Goodwrench 350ci V8, Edelbrock TES Headers, Flowmaster Catback, MSD 6al and Blaster 2 coil, Edelbrock Performer intake, Edelbrock Performer 600cfm carb. T5, 373 rear, Eibach springs, Cervin Vega speakers, Rock. Fos. Sub, Pioneer CD,
email-chris4421@hotmail.com
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"I used to be a Mustang Guy! I didn't know the power of the dark side!!"

Yarnboy

You are 4 tenths better than me! You only have a ported plenum/hollwed cat on me and you have more weight! What did you run stock?? How much did you pick up from porting the plenum and hollowing the cat?



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-Red '88 IROC 5 Speed 305 TPI w/3.08
-Dual Friction Centerforce Clutch
-Accel 300+ Racing Ignition
-Accel 300+ Pro Sleeve Plug Wires
-Accel U-Groove Plugs
-Flowmaster Force II 3 Chamber Cat Back Exhaust
-Hypertech Chip
-Hypertech Airfoil
-Removed, Then Re-installed (out of fear) MAF Screens
-Gutted Air Box
-Best E/T 14.686, 60' 2.205, 1/8th mile 9.461, 1/4 MPH 93.91
-Best 60' 2.17