I just recently added
hooker super comp shorty headers
random tech hi flow cat
slp cold air kit
hooker catback


Just ran at the track and I was very disappointed with my times, I had a horrible time with traction but I thought I would gain a bit more performance, engine 305 tpi auto 1985

stock ----- mods

2.243 60ft- 2.376
6.441 330ft 6.463
9.931 1/8ET 9.856
70.50 1/8mph 72.80
15.489 1/4ET 15.201
87.75 1/4mph 91.65

Now do you think I need a new chip to maximize the mods? I though I would have reached 14's, most likely 14.7. Any suggestions? (please don't say ditch the 305 I've read it many times). Probably new tires would help too I guess.


[This message has been edited by Jono (edited September 15, 2001).]

 

Looks to me like you picked up allmost 4mph and 3 tenths. I'd be pretty happy with results like that ------------------
92Z28
89GTA

[This message has been edited by Acceld Z (edited September 15, 2001).]

 

I'd say with traction your results are to be expected. Exhaust and intake mods aren't going to change your world.

------------------
1990 IROC 350
Mods: Too busy trying to make it run right to mod it.
Airfoil, Dynomax cat-back, MSD coil, 180 t-stat, Bald Eagle tires,
Hypertech fan switch, Accel 23# injectors, Holley module, ported plenum,
Ported Daytona Yellow stock base, Moroso valve covers, other stuff,
Streetdampr, Ruger P95DC, hot wife, new oil filter, !cats, !TBC, !AIR.
18.0 @ 85MPH since I'm one big-a$$ MF
"It's better to have and not need than to need and not have."

 

4mph = 40hp

 

Don't feel bad man. I just took my car out last night for it's first baseline runs since I bought it two weeks ago. My first run gave me 15.518 @ 88.93. Second run was 15.319 @ 89.46. Third run was 15.583 @ 89.46 again.
I've got a completely stock 350. I was hoping to be right on the 14/15 border.

------------------
'88 Gunmetal Grey Trans Am GTA

 

you picked up a 1/2 second and 4 mph.
And your not happy????
You are losing alot with your launching.
I'm getting 2.08 60 fts on a stock 86 TA.

I was gonna run the drag radials today, but the hatch glass exploded last night.

FUN

------------------
86 T/A 5.0 A4 & 2.77 gear
15.62 @ 86 mph
93 Civic 1.6L
13.5 @ 100 mph

 

Jono....looking at the before and after, I'd say you picked up a good bit. You've got almost 2.5mph in the 1/8th and 4mph in the 1/4. That's a significant gain....you just need to get that power to the ground. Get some drag radials and think about doing a stall convertor next. You've got mid 14 second potential if you cut your 2.3 60's down to 1.8-9's. This can easily be accomplished with a good convertor and a set of drag radials.


------------------
David Tuschhoff
1991 RS/Z28 Camaro
Fuel injected 355ci V8.
12.47 @ 110.7mph 1.80 60'
Best mph of 111.6.
My f-body page!

 

15.2 @ 91.65! Hey, that's not earth shattering - but I think the MPH increase is a good indication of getting your money's worth. I'd go for some Nitto Drag radials for everyday use, and start working on the suspension after that. Try and capitalize on the power you are already making. If you could knock .3's off of your 60 ft. - I'd say that you have a mid 14.70 pass in your car as it sits. Maybe faster. But, this is just my .02's - good luck.

------------------
1986 IROC, fully loaded, Mini Ram'd 383, Art Carr 700R4, Accel DFI, 12 bolt rear, etc, etc......

 

Yeah, I agree I would look into some traction stuff. Just start broswing various websites. www.bmrfabrication.com www.spohn.net there are plently of others out there

 

Yeah I guess its not that bad the more you look at it, I was just expecting 14's and didn't get them, I ran on all season tires (even though it doesn't even see winter, go figure) so I think my next purchase should be a really good set of road tires, that should help me get to constant 2.1's, I also had a bit of problems shifting since when the car spun sometimes it would shift at 4000rpms which really made for a long second gear.

here are 2 more runs I made

2.453 60ft- 2.345
6.584 330ft 6.534
10.004 1/8ET 9.953
72.00 1/8mph 72.35
15.388 1/4ET 15.307
90.76 1/4mph 91.50

up to the 1/8th mark i get the same times as if I were stock so it looks like I just can't put any of the power to the ground I'm getting it dynoed this week so I will have some numbers and see what exact gains were produced.


stock 173.3rwhp 233torque
mods ??? ???

stay tuned.. same bat channel for the conclusion

[This message has been edited by Jono (edited September 16, 2001).]

 

You are right, it's time for sticky tires to put down all that newfound power! I like Nitto drag radials (555R), and run them on my daily driver Formula. With a mostly stock motor/intake/exhaust, it pulls 1.89-2.0 60's all day long. If you could drop that 60' to a 1.9-2.0, you would have been solidly in the high 14's (14.7-14.8)!

------------------
87 Formula 350 13.94@96.67
98 Z28 1LE 13.15@107.59
1LE Owners Association

 

Those really aren't numbers to sneeze at, thats really decent. Like was said before, thats close to 40 hp. You might need to get rid of that peanut cam and one thats just a hair bigger. Comp Cams has a good one: 206*/210* .450/.480 lift, its hydraulic roller. Just my opinion!

------------------
1987 Chevy Camaro IROC-Z
L98 TPI 350 (5.7L)
TH 700R-4 Transmission
Borg Warner 7.75" 9 Bolt Rear End with 2.77:1 Gears.

Current Mods: LT4 HOT Cam, Comp Cams 1.52:1 Roller Rocker Arms, Accel High Flow TPI Baseplate, Edelbrock TES 1 5/8" Headers, Catco 3" High-Flow Catalytic Converter, Hooker 3" Aerochamber Cat-Back System, Transgo Shift Kit, Performance Resource Chip, Accel Ignition, K&N Filters, Jet TPI Air Foil, All Free Mods, Falken ZIEX Z-Rated Tires.

Best ET: 14.32 @ 97.7mph
(corrected for elevation)

 

Perhaps it's time to spend some money on the suspension. Namely, LCA's Panhard rod and some good bushings. I ran 1.96 60' times on Firestone SZ50s with my L98 powered 89 RS convt. So drag radials are nice, but suspension mods last more than 10 or 20 runs at the track like $165 apiece drag radials.


------------------
Rob P
89RSconvtZZ4TPI Edelbrock Intake
SLP Dual Cold Air Intake 1 5/8" Headers Semi-Siamesed Runners, IROC
suspension, alum shaft. Numerous mods.
92Z28convt5spd (stock)
71Impala convt 402BB
BETTER DRIVING THRU SUPERIOR HORSEPOWER!

 

I'm with you guys...but don't trust what you hear or see on magazine such as 350's turning low 14's stock....look at consistency too, after all, runing mid 14's ALL the time is better than 14.1 one day and every other day is 14.9....but I understand your disapointment....trust me! ;-)

------------------
85 Z28, 355, edelbrock base, SLP runners (old style) 58mmTB, ported plenum, stock cam, fuel reg, TES headers, flowmaster, 3.23's posi, rear disc, shift kit, MSD 6a, 305 hypertech chip (YUUUCK!) best prior intake mods: 14.6 @ 94, 2.02 60' temp: 78deg, 80% moist, on radials.
69SS, black, 3,73's, TH400, 402 BB, roller everything (solid 246@50 622 lift)+stud-guirdle, 67 Vette heads ported and o-ringed, about 10:1 cr KB pistons

 

I'm ran a 14.8@93 MPH Bone stock with my Formula 350. Now I have a 14.030@98 with a new intake and exhaust. Same chip too.

 

I thought my year came without the peanut cam something like 202/206 .404/.415
but needless to say it would still help greatly, and a new pair of heads

 

I just wanted to add my $0.02. First off you picked up nearly 4mph, which is a very significant gain. Your ET is all screwed up b/c you were apparently spinning all over the place.
Now the solution to the traction problem. I'm gonna go one firther than everyone hear and make things very simple for you. LEARN TO DRIVE IT! Sorry, i don't mean that to be mean, but the fact of the matter is running a high 14 second car down the track is a pretty leisurely experience. If you spend just one night at the track working on your launch you should be able to drop those 60's considerably. You just have to find the right combination of launch RPM and smoothly rolling into the throttle w/o spinning it.
If you learn how to drive your car to it's fullest now, it will be that much 'faster' at every stage of the game.
Sorry, i just have a huge pet peeve against slow cars on sticky tires.

------------------
Ed Maher - Moderator @ The TPI & Carb Boards
92 Z28 Convertible - Quasar blue / Tan top
305 TPI A4 2.73 - 14.8 @ 93.1
Stock except ported plenum and dual cats
-=ICON Motorsports=-

- Definitely prototypes, high powered mutants of some kind. Too weird to live, too cool to die

 

Every tenth you leave in the 60' time is worth 2 at the big end. And it's worth some MPH, too. A 4MPH improvement on a slower 60' time is REAL HP improvement.

You have traction problems now, right? You didn't have them before, right? That's why you didn't end up going much quicker. The extra horses went mostly up in smoke. Some or even all of this you can make up for by relearning your launch technique (it will be significantly different then before the mods).

Before you could slowly mat the pedal right out of the hole and the tires would stick, but now it's a lot tougher, maybe. If you used to launch from idle, try loading up the motor against the converter. And vice versa. Gotta play with it. Even the worst street tires should be worth a high 2.1 60 foot if launched on correctly.

 

Also you have some power that you have not found yet. With more air coming in and out you could use a little more fuel. Bump your pressure 1 or 2 PSI. Then you can also give your car another 1* advance on timing on the base due to the fact of the colder air.
I would say thats atleast another .2 sec you could pick up.
Your 60' is aweful. Try lowering your tire pressure a bit. That will help. Also try a differnet launch. Try holding about 2000RPM on the brake and going to 3/4 Throttle out of the whole until you get about 30' then mash it. This shoul get you more traction and improve times.

Seriously the first 60' is the most important spot on the 1/4 mile.

------------------
89 Trans Am Turbo 3.8L All stock 43,000 miles #1053 of 1555

Past Thirdgen:
86 Trans Am w/ built 355TPI with SLP goodies and too much other stuff to List. One sweet *** car, wish I would have had a good enough Job to pay insurance on three cars so I could keep it, but for a 89 Turbo Trans Am w/ Low miles, I think I made the right choice!