My times were a bit disapointing, but constant. My best run was 15.206 at 85.8 mph, I had a good reaction time and it hooked up well. My 60 ft was 2.106, i actually raced a C5 vette twice, and both time was ahead of him till halfway through, he was running a 14.7 at 100 mph.
What im asking here is what do i need to do to get into the 14's? This is what i have, 85 tpi, 305, CAI, KN, AFPR, Crane compucam 210 216 .440 .454, 3:42's, limited slip diff, Tb bypass, ported plenum, Flowmaster dual chamber muffler, airfoil, 160 stat, and chip.

Thanks, Curtis

 

A 100 shot will get you low 14s for sure..maybe high 13s.

 

Add a set of headers.

------------------
1988 Formula 5L/5sp 3.45 gears, SLP cold air kit, MAS gutted, TPIS air foil, TPIS AFPR, MAC headers, Mac under drive pulleys, MAC cat back, Relocated MAT.
Best ET street tires 13.85
Best 60 FT street tires 1.930
Best MPH street tires 99.29

 

I'll second bjankuski, a set of headers will make a world of difference, especially if you have single exhaust. I gained over half a second by putting on a set of Edelbrock TES and a high flow cat. Besides hp, headers help with gas mileage, and sound really cool too.

 

A 14.7 in a C5 Vette? My grandmother could get a better time out of a C5! LOL.

------------------
Rob P
89RSconvtZZ4TPI
Edelbrock Hi-Flow Intake
SLP Dual Cold Air Intake
1 5/8" Headers
Semi-Siamesed Runners
MSD6AL/relocated MAT/ AdjFPR/IROC frnt@rear swaybar/wonderbar/steeringbox/alum drvshaft/ Alston SFC/3:23posi disc rear/MAC LCA/H.Adams Panhard Rod/KYB struts/ shocks/
92Z28convt5spd
71Impala convt 402BB
BETTER DRIVING THRU SUPERIOR HORSEPOWER!

 

is that a custom chip or an off the shelf chip?are your valve springs matched to your cam?if it's a off the self chip your not going to see the full affect of that cam.you need to get some headers put on so that cam can breath.

------------------
1991 banditt2 #130 of 600
Project 350 TPI Banditt II
http://www.street-dawg-racing.cityslide.com
http://photos.yahoo.com/tonysams72
http:/discussion-board.com/GreaterCincinnatiFBodyAssociation

 

Rob, I'm not surprised about the C5 running a 14.7.

I see this alot. They were either afraid to really push it, and just wanted to be at the track to say they went, or they really didn't know how to drive/shift the car.

Last time I was at the track, there was an LT1 C4 running 16.0 in the 1/4.

For those who are not afraid to drive to drive there Vette, the stock C5 seems to average about a 13.2 from the ones I have seen.


------------------
If you live in Southeastern US, check us out!
South East Thirdgen

GM Master Tech
ASE Master Tech + L1
Savannah, GA

'87 Trans Am
S/D TPI retrofit including functional PassKey,
22# injectors,
Whatever chip I feel like burning,
JET AFPR, Ported Plenum,
TB Coolant Bypass, Custom Cold Air,
SSM SFC, KYB Shocks, Boxed LCAs, Wonder Bar,
8mm Accel wires,
Flowmaster Exhaust,
16" GTA rims,
Corvette Servo,
-->14.97 @ 94.9 MPH<--

'97 Bonneville SSE

[This message has been edited by GMTech (edited April 01, 2001).]

 

the chip is an off the shelf item, and my springs came with the cam. The Vette was an automatic, so I dont know why he was running so slow even if he was a bad driver. I would like to get headers, but i dont have the money for new ones, if anyone has some used ones id love to take them off your hands.

Curtis

 

C5 vette running 14.7????? HOW?? Even with an auto, it shouldnt be that slow AT ALL. I happen to be an owner of a 1998 six speed C5(C5 message forum member name: C598LS1). The car has 4400 miles on it, and i've raced it at the track a few times in Englishtown, NJ's Raceway Park. The car is completely stock still, becuase i wanted to get it to do what all the mags say it does in the 1/4th(a 13.2)....my best 1/4th was a 13.5@104.4 MPH Thats stock, with a six speed, this being my very first six speed car. Yes, i redlined in every gear into 4th...becasue by the time you're in 4th, you're at the 1/4th mark, and that wall gets closer and closer. Anyway, i'm just shocked at that poor time for a C5...even with an auto, the C5 should be somewhere between 13.5-13.9, if i'm not mistaken by what i read.

------------------
1986 5.0 TPI Trans Am
Random Tech High-Flow Cat
Two Chamber Flowmaster Muffler
Megs Custom 4.5" Stainless Steel Tips
1999 Grand Am GT In-Dash CD Player w/Equalizer(fits like '86 original)
5% Tint On Rear, 35% On Sides

[This message has been edited by PhantomTPI (edited April 01, 2001).]

 

who know he may have put bad tires on it really stiff ones. or he could be like some people I have seen where they are so afraid that they might get the carpet dirty they put 2 floor mats on top of there factory ones and make the thing so thick you could never get any throttle.

 

He had on Eagle F1's just like mine. Heres his two times that i raced him.
Reaction: .380
60 Ft: 2.371
660 Ft: 9.707
E.T.: 14.725
MPH: 100.879
Second Run
Reaction: .323
60 Ft: 2.451
660 Ft: 9.867
E.T.: 14.943
MPH: 98.990
I think he was going all out (expecialy the second time) because it made him mad that my $3000 305 almost beat him, then my friend that was riding with me was waving at him as i was beating him.

Curtis

 

looks like he ain't hookin up real well his 60 foot times suck.

------------------
86 IROC-Z
40,000 miles!!
305 TPI
1 gutted maf/airbox
2 k&n filters
3 manual cooling fan switch
4 headers, no cat, cat back flowmaster
700R4 tranny
1 shift kit
2 manual converter switch
BF Goodrich radial TAs
3.23 gears
georgous car repainted by my dad and assembled by me

FASTER THAN YOU THINK FOR A "STOCK" 305 hehe.

 

Are you sure he didn't let off the gas since he redlighted both times?

Look at his reacion times. .500 is perfect. Anything below .500 and you redlight, meaning automatic loss.

------------------
If you live in Southeastern US, check us out!
South East Thirdgen

GM Master Tech
ASE Master Tech + L1
Savannah, GA

'87 Trans Am
S/D TPI retrofit including functional PassKey,
22# injectors,
Whatever chip I feel like burning,
JET AFPR, Ported Plenum,
TB Coolant Bypass, Custom Cold Air,
SSM SFC, KYB Shocks, Boxed LCAs, Wonder Bar,
8mm Accel wires,
Flowmaster Exhaust,
16" GTA rims,
Corvette Servo,
--&gt;14.97 @ 94.9 MPH&lt;--

'97 Bonneville SSE

 

Well, its an auto...thats the first thing, that car should be NO problem to run. Second, its built to be driven fast...and designed that way too. That car has so much damn power from the factory, its a thrill for me to drive when i do take it out. after the break-in period, that thing flys. And, if you race it a few times after the break in period, it will loosen up a bit(exhaust, etc)and will actually be a bit faster too. One comment about floormats....as stupid as this may sound, for all of us with manual transmissions, when you race at the track, take the floormat OUT and put it in the trunk. As minor as this sounds, it will help the clutch/foot action to be a bit quicker. Learned that from a fellow drag strip racer.

------------------
1986 5.0 TPI Trans Am
Random Tech High-Flow Cat
Two Chamber Flowmaster Muffler
Megs Custom 4.5" Stainless Steel Tips
1999 Grand Am GT In-Dash CD Player w/Equalizer(fits like '86 original)
5% Tint On Rear, 35% On Sides

OTHER RIDE:
1998 C5 6Spd. Corvette
Silver w/Gray Leather Int.
12/14 Options
Stock(for now)
Best 1/4th: 13.5 @ 104.4MPH

 

Two things guys:

-Reaction time DOES NOT count when it comes to ET or MPH. You will lose the race if both drivers have the same ET, but your reaction time is slower; in official races anyway. But reaction time has nothing to do with ET.

-Let's not fool ourselves people. A new Vette runs better than 14.7 and it would take a lot of mods for us TPIs cars to even come close. I have personaly seen a bone stock Firebird Formula run 13.6@107 MPH; the guy had bought the car the day before. Now, that's fast.
I tried to fool myself thinking that my car was faster than a LT1 and every time I left with my head down (not anymore though)
Later, Rick

[This message has been edited by F22Raptor (edited April 01, 2001).]

[This message has been edited by F22Raptor (edited April 02, 2001).]

 

You must be talking about a 4th gen Formula, there is NO WAY a Stock 3rd gen formula would run a 13.6! 13.6 is about average for an LT1 w/ a body as light as the formula. I think the Z and the T/A were a tenth slower ( a little heavier).


------------------
If you live in Southeastern US, check us out!
South East Thirdgen

GM Master Tech
ASE Master Tech + L1
Savannah, GA

'87 Trans Am
S/D TPI retrofit including functional PassKey,
22# injectors,
Whatever chip I feel like burning,
JET AFPR, Ported Plenum,
TB Coolant Bypass, Custom Cold Air,
SSM SFC, KYB Shocks, Boxed LCAs, Wonder Bar,
8mm Accel wires,
Flowmaster Exhaust,
16" GTA rims,
Corvette Servo,
-->14.97 @ 94.9 MPH<--

'97 Bonneville SSE

[This message has been edited by GMTech (edited April 02, 2001).]

 

I know he wouldnt have let off even if he redlighted, because it was an E.T. only race. I redlighted a couple time, and it show the reaction time as being negative.

 

That time from a C5 is about on par for a track of that altitude. what is the altitude there? 4000 ft? a 15.2 at an altitude that high altitude would be outstanding for a 305. I have seen a few lt1 cars break into the 14's here but most do not. this is at 3500 feet. now if the track was higher it would really kill the times and the trap speeds. Oh BTW my RS ran the same trap speeds that you run. i don't see how you ran those times at that low of a trap speed enlighten me. i was running 2.2 60 foot times and my car was nearly a second slower than yours with the same trap speeds.

------------------
90 IROC l98
last season best corected 13.62 @102
mods
full exhaust, AFPR, pulley, jet stage 1 chip, billet servo, 52mm throttle body, slp runners and some 1.6 RR's and a few other little things.
243 RWHP and 342 RWTQ with hot engine and 90 octain fuel

 

How do you find your corrected ET times? My 305 TPI made 211 RWHP and 284 lbs Tq on a hot engine and 89 octane fuel. My best ET is a 14.7, at either 97, 98, or 99 MPH I can't specifically remeber the MPH. I'm in Indianpolis, what is "corrected" ET? What is my corrected ET?

 

I could see an LT1 C5 running 14.7 STOCK! The guy who was talkin' about the '98 C5 that ran 13.5 stock has an LS1!! And everyone knows that the LS1 is a better engine stock than a STOCK LT1!!

But back to the original question! How to get into the 14's!! Definitely headers and personally, I would go with a slightly larger cam and dump the Crane BS and get a Comp cam....they're by far superior to the Crane cams!! Of course Nitrous would do wonders for just about anything but I'm talkin' all throttle NO bottle here!! If you want to get into 13's and possibly 12's (all throttle no bottle), replace the 305 with a 355 (or 383) and get a good set of aftermarket heads...like some AFR's or even Sportsman II's!!!

------------------
1986 Trans AM
305 TPI
Well over 200,000+ miles (speedo/odometer non-funtional! Odometer reads 142,000)
4 Wheel Discs
9 bolt Borg Warner Rear (2.77's....oh joy) :P
Completely Stock
Soon to upgrade to a 355 TPI, Stock TPI ported, 24#/hr SVO injectors, Hedman Shorty Headers, Dart Iron Eagle heads or GM LT4 heads, XE262 Cam ground on a 114 LSA, Moroso Blue Max Plug Wires, external MSD Blaster II Coil and an MSD 6-AL Box!!
Current project: Keeping my 305 running until I get my income tax returns!

 

LT1s came in C-4 cars, not the C-5.


The guy who ran 14.7 in a C-5 must be one horrible driver, or be running at 10,000 feet above sealevel Also the trap speeds for C-5 Vettes stock are in the 107-110 range.

 

Wichita elevation? probly about 3500 ft. My 60 ft times were all about 2.1. How do you only have 211 Hp on a hot engine? As far as I know, my came with 210 from the factory? If I hadnt just rebuilt the 305 then I would step up to a larger motor, but im starting to like my 305. Ive been checking into getting a set of used headers, I will post new time with them on.

Curtis

 

It was a '00 Formula with less than 300 miles on the odometer.
BTW,
yes, a red light will disqualify you automatically, BUT your ET is still valid. I say it once again, reaction time has nothing to do with ET, even if you red-light.

If there is one thing that pisses me off is Mustang sales vs. Z28 and T/A. I still don't understand why you would buy a Mustang instead of an F-Body. GM put one hell of a package with the LS1. It has to be without a doubt the best cars ever made in the whole world. Affordable, powerful, good handling, real good gas mileage, styling, attitude, technologically advanced, etc etc.
I think GM is the only one to be blamed. When was the last time you saw a Mustang ad on TV? When was the last time you saw a Z28 or T/A ad on TV?!

sorry guys, needed to get that off my chest. The only problem is that I'm venting my anger on the wrong people.
Rick


[This message has been edited by F22Raptor (edited April 03, 2001).]

 

to correct your times for altitude you must first find the altitude. then look up the correction factors on the net. I do not correct for calculated air density. i tried that once and it said i ran a 13.1 wich is just not going to happen with my mods. so i corrected to elevation only. 90iroc you must have a 5 speed. Those are great numbers out of a 305. If you ran that fast in the traps you are doing something wrong at on the launch or in shifting to get a time like that. go buy a set of yoko AVS intermediates 84 bucks(tirerack) a pop. yes they are great tires. i can spinn mine all the way through the 60 foot mark and still run a 2.0 when they are new. drop the cluch at 3500 on them and modulate the throttle till the catch if they spin then go all out you will run a better time. it looks like you are pretty close to sea level. You should get a 14.3 or so out of that car judging by your trap speed.

------------------
90 IROC l98
last season best corected 13.62 @102
mods
full exhaust, AFPR, pulley, jet stage 1 chip, billet servo, 52mm throttle body, slp runners and some 1.6 RR's and a few other little things.
243 RWHP and 342 RWTQ with hot engine and 90 octain fuel

 

Kevin G...

Yea, my 60ft times sucked when i ran the C5...i dont have the timeslips on me, they are still in moving boxes somewhere...i will have to dig them out...but for the MPH, i should be doing better than a 13.5...its all in R/T and also my shifting...not easy to race a stick when you dont drive one daily...

------------------
1986 WS6 5.0 TPI Trans Am
Random Tech High-Flow Cat
Two Chamber Flowmaster Muffler
Megs Custom 4.5" Stainless Steel Tips
1999 Grand Am GT In-Dash CD Player w/Equalizer(fits like '86 original)
5% Tint On Rear, 35% On Sides

OTHER RIDE:
1998 C5 6Spd. Corvette
Silver w/Gray Leather Int.
12/14 Options
Stock(for now)
Best 1/4th: 13.5 @ 104.4MPH

[This message has been edited by PhantomTPI (edited April 03, 2001).]

 

Yeah, my transmission is funny. The springs on the shifter were gone, so I had to be careful not to hit the gate or miss the gear entirely. I'm going to have it rebuilt too along with my engine here real soon.

 

One last time: REACTION TIME HAS NOTHING TO DO WITH ET OR MPH.
Sorry to be an a$$ , but if your time sucked it is either traction, bad shifting or your car just sucks.Even if you redlight, your ET will always be the same. Stop blaming reaction time!
Rick



[This message has been edited by F22Raptor (edited April 04, 2001).]

 

Whoa horsey! Whoa! No need to give birth over this.

------------------
1986 WS6 5.0 TPI Trans Am
Random Tech High-Flow Cat
Two Chamber Flowmaster Muffler
Megs Custom 4.5" Stainless Steel Tips
1999 Grand Am GT In-Dash CD Player w/Equalizer(fits like '86 original)
5% Tint On Rear, 35% On Sides

OTHER RIDE:
1998 C5 6Spd. Corvette
Silver w/Gray Leather Int.
12/14 Options
Stock(for now)
Best 1/4th: 13.5 @ 104.4MPH

 

PHANTOMTPI: You didn't have an email addy listed to I figured I'd just post here!! I was wondering about your signature...where it says 1986 WS6!! Technically the WS6 package wasn't offered by GM until '88 I believe it was!! The '86 Trans Am came with a performance package but it wasn't called the WS6 package back then! In reality you could say that ALL '86 T/A's had the "WS6" package! There...got that off my chest!! Sorry...it was just buggin' me!!

------------------
1986 Trans AM
305 TPI
Well over 200,000+ miles (speedo/odometer non-funtional! Odometer reads 142,000)
4 Wheel Discs
9 bolt Borg Warner Rear (2.77's....oh joy) :P
Completely Stock
Soon to upgrade to a 355 TPI, Stock TPI ported, 24#/hr SVO injectors, Hedman Shorty Headers, Dart Iron Eagle heads (AFR's in my dreams), XE262 Cam ground on a 114 LSA, Moroso Blue Max Plug Wires, external MSD Blaster II Coil and an MSD 6-AL Box!!
Current project: Keeping my 305 running until I get my income tax returns!

 

yeah, I really liked your modified windows. Awesome!

 

Hey, I agree, I wasn't blaming RT on poor ET, just trying to give a possible explanation. I figured I would say that he may have let off the gas since he redlighted, instead of just coming straight out and said that his car or his driving sux.


------------------
If you live in Southeastern US, check us out!
South East Thirdgen

GM Master Tech
ASE Master Tech + L1
Savannah, GA

'87 Trans Am
S/D TPI retrofit including functional PassKey,
22# injectors,
Whatever chip I feel like burning,
JET AFPR, Ported Plenum,
TB Coolant Bypass, Custom Cold Air,
SSM SFC, KYB Shocks, Boxed LCAs, Wonder Bar,
8mm Accel wires,
Flowmaster Exhaust,
16" GTA rims,
Corvette Servo,
--&gt;14.97 @ 94.9 MPH&lt;--

'97 Bonneville SSE

 

86TPI...

Thanks for the correction...theoretically, it is a WS6 then. I wasnt aware of that fact though.

F22...

You're damn right they're awesome.

------------------
1986 WS6-Equipped 5.0 TPI Trans Am
Random Tech High-Flow Cat
Two Chamber Flowmaster Muffler
Megs Custom 4.5" Stainless Steel Tips
1999 Grand Am GT In-Dash CD Player w/Equalizer(fits like '86 original)
5% Tint On Rear, 35% On Sides

OTHER RIDE:
1998 C5 6Spd. Corvette
Silver w/Gray Leather Int.
12/14 Options
Stock(for now)
Best 1/4th: 13.5 @ 104.4MPH



[This message has been edited by PhantomTPI (edited April 04, 2001).]

 

GMTech...

I've got a question for you. Got this code reader from walmart for 20 bucks. Seems like every time i go from here to jersey, when changing altiutdes, my service engine soon light comes on. It could stay on anywhere from 30 seconds to 10 miles. And then it shuts off. I notice NO performance differences at this time. What i do notice is each time i start the car, it wants to, and DOES stall. Especially when the engine is cold...it just wants to die..i have to keep hitting the gas, but it doesnt always work. This happens when the engine is warm sometimes too. Anyway, i hooked up this code puller, and it gave me the code "32" which was described as either being the barometric pressure sensor circuit-failure, or the egr valve, or some kind a vacumn sensor. Can you shed any light as to what i should do in order to avoid shelling out lots of $$? Can i replace these parts cheap or do i need someone to do it? The car is an 86 305 with a TPI. Or do you think it could be something else? Your thoughts would greatly be appreciated. Thank you.



------------------
1986 WS6-Equipped 5.0 TPI Trans Am
Random Tech High-Flow Cat
Two Chamber Flowmaster Muffler
Megs Custom 4.5" Stainless Steel Tips
1999 Grand Am GT In-Dash CD Player w/Equalizer(fits like '86 original)
5% Tint On Rear, 35% On Sides

OTHER RIDE:
1998 C5 6Spd. Corvette
Silver w/Gray Leather Int.
12/14 Options
Stock(for now)
Best 1/4th: 13.5 @ 104.4MPH