stock motor TPI Vette: 13.16 at 103.58mph

[tpivette89]

went to the track a few weeks ago because the weather got a bit cooler (mid - low 70s) to see if the Vette would benefit from the less humid temps. i only got a single run in because cars kept breaking down all night long. in spite of only haveing a single run i managed to walk away with a new best time: 13.16 at 103.58mph w 1.76 60ft

the car is almost completely stock save for a few minor boltons: K&N filter, airfoil, AFPR, EM front ypipe, Borla rear ypipe, S10 stall converter, BFG drag radials, and some free mods

everything else on the car is 100% stock... the entire TPI intake, exhaust manifolds, transmission, rear (3.07s), suspention, heads, cam, & bottom end. the car has no weight savings modifications, and has 82k on the clock

i just recieved a underdrive pulley in the mail today that i plan to bolt up in the next few days. im also in the process of porting intake (ill be siamesing the plenum to upper runner openings for a bit more flow). with these mods im hoping for the magic 12.99. with cooler weather maybe dipping into the 105mph range. ill post new track times as i get them for any interested

 

[Mad-Mic]

i think with cold weather and your intake done 12.80's

that thing is fast! i seen the slips!

 

[Hib Halverson]

Regardless of this car's mods ( or lack thereof) there are still the laws of physics.

For a Corvette to go very low 13s on Drag Radials requires about 100 more horsepower than stock.

It is most interesting that an L98 has that much more power with only limited bolt-ons.

 

[Mad-Mic]

Regardless of this car's mods ( or lack thereof) there are still the laws of physics.

For a Corvette to go very low 13s on Drag Radials requires about 100 more horsepower than stock.

It is most interesting that an L98 has that much more power with only limited bolt-ons.

well Hib i seen the timeslips and the car. it is stock other than what he said.

when i go to the track friday i'm hoping for a high 13.6 low 13.7 run on street tires with only a 2.59 rear gear and stock stall. i think it is possible.

 

[tpivette89]

For a Corvette to go very low 13s on Drag Radials requires about 100 more horsepower than stock.

not true. my car runs what it does because it has an abundance of low end torque and my setup transfers all that power to the ground. look at my 60fts and youll see why i run the times i do

 

[MagikDraggin]

not true. my car runs what it does because it has an abundance of low end torque and my setup transfers all that power to the ground. look at my 60fts and youll see why i run the times i do

It DOES make me question my own judgement of forking out nearly 5 grand for engine mods just so my "stock '96 A4" could go low 13's and "only" 105mph. For that matter, those times are better than most LT4's.

 

[warren s]

My "stock" 95 A4 runs a 13.4 with slight mods and a base of 300 HP, so I would love to know how a car with 50 less HP stock, weighs the same, could accelerate so much faster.

 

[sothpaw]

outside temp. and track conditions also factor in.

I bet if I went out today, as cold as it is here, and did the 1/4, I would hit mid 12's, especially if I had DR's.

Mark,
I think there is more in your car. I already scored 110.5mph with mine, and that was w/ a 2.1 s 60 foot time.

 

[warren s]

outside temp. and track conditions also factor in.

As stated before, the laws of physics cant be fooled-

250 HP on a 3300 Lb car, plus at least another 100 for the driver just cant add up to a 13.1 in the quarter even with 100% traction and 30 degree ambiant temp.

 

[tpivette89]

i think im making a bit more than 250hp... i believe thats very close to what i had from the factory. ive done alot of free mods, and some exhaust work. im also 60fting in the mid 1.7 range. torque is probably over 375ftlbs. like i said, its all in the 60ft... for every tenth in the 60 is equal to about 2 tenths in the quarter. check out www.corvetteforum.com, there are other people that have run what i do (faster too) with similar mods. heres the breakdown of what i did with the times i got:

100% bone stock - 13.9 at 99mph w 2.0 60ft
flowmaster catback - 13.8 at 100mph w 2.0 60ft
cutlid & K&N - 13.6 at 101mph w 1.9 60ft
free mods, airfoil, AFPR - 13.4 at 102mph w 1.9 60ft
front ypipe, bumped timing, DRs - 13.2 at 104mph w 1.8 60ft
2500 stall, more free mods, borla ypipe - 13.1 at 103mph w 1.7 60ft

if anyone truely doubts my times ill be running at Cecil County Dragway on wed Oct 8th. ive upgraded the car since my 13.1 sec runs and am shooting for 12s. the nonbelievers are welcome to come down and be proven wrong

 

[Mad-Mic]

i pulled a 13.7 @ 102.5 mph tonight with a 2.11 60' tonight. track was crap compared to last week when i hit a 1.96 still on a 2.59 rear gear and stock 1600 stall and old GSC's 285/40/17's with 20 psi in them.

if i could of hit the 60' times with a low 1.9 or possible 1.8 i think she would of pulled what i was estimating which was a 13.4. with the mph i ran that is very possible with maybe a high 13.3.

trust me, you guys know me well as i've been here for well over a year now, tpivette89 is telling you the truth! i've seen his car and inspected it. it's completely stock! the motor never been cracked open.

those that throw money into a car and expect times will never see the times they expect. those that can tune can inch out every hp possible without spending big bucks to make it run the numbers they expect. i myself am close to or at 300 hp and probably close to 385 lbs of torque with the numbers i'm running on a 2.59 gear. i spun so hard tonight i couldn't hook up till the end of 1st going into 2nd gear! i looked in my drivers mirror and seen nothing but smoke and still pulled 2.1's to 2.2 60's!

here's my break down in mods to track times.
best run bone stock was a 14.24 2.04 60' @ 98 mph average run was a 14.4-14.5 97 mph. some runs as high as 15.1! (dead of summer high humidity)

added a cut lid and k&n filter, tb bypass, descreened maf 14.4 2.07 60' 98 mph no change was spinning too much on 26 psi.

160* t-stat, accel super coil, bumped timing to 12* degrees no mufflers 13.9 @ 99.5 mph 1.96 60' on 20 psi

eliminated pre-cats with new front Y pipe hi-flow cat 13.7 @ 102.5 mph with 20 psi and 2.11 60'

believe it or not in the last month i dropped over 7 tenths in ET and picked up over 4 mph! if i had a 2800 stall and DR's i bet i'd be close to tpivette89's times cause i can not hook worth a crap! i'm spinning bad all the way thru 1st and sometimes halfway into 2nd gear

 

[warren s]

100% bone stock - 13.9 at 99mph w 2.0 60ft

according to the stats published on this forum a stock 89 runs a 14.8

its all in the 60ft

The L98 is known for low end torque but runs out of breath fast.

Are you the origional owner of that car?

Its very impressive that it runs the same times as a LS1 that puts out more torque and 100 more horses.

 

[Mad-Mic]

according to the stats published on this forum a stock 89 runs a 14.8



The L98 is known for low end torque but runs out of breath fast.

Are you the origional owner of that car?

Its very impressive that it runs the same times as a LS1 that puts out more torque and 100 more horses.

i'm sorry a stock 89 does not run a 14.8! ask 89x2 what a stock 89 runs with only a chip! 13.8

my stock 87 with stock wires, plugs, cap and rotor with 33k in miles ran faster than that! after tune up still using stock wires, cap and rotor with a paper filter ran a best of 14.2 and averaged 14.5's.

sorry you guys are not adding up. bench racers don't count

 

[rrubel]

Don't see how a stock '89 could run 14.8; a stock 86 is supposed to do 14.54, and that's with less HP.

[RICHR]

 

[warren s]

Tech Center | C4 Corvette Center | 1989 Corvette Center | 1989 Corvette Production Performance Numbers | Corvette Action Center

according to the above review 14.8 @ 97

Bench Racers???

Dude, I have been running cars down the quarter for 20 years, so a bench racer I am not.

 

[Mad-Mic]

then do please explain how a stock TPI, stock Motor, stock geared vette can do it then?

explain to me how my stock 87 can run a 13.7 @ 102.5 mph with much room for improvement?

 

[warren s]

There is nothing to explain, a stock 1989 Corvette is not going to run 13.1

Either its not running that time, or its not stock. If you and the owner say it ran that time, I accpet the car did. I dont accept it is stock.

New C5s with 350 Hp ar turning low 13 like that. 250 HP is not enough to move a 3300 lb car down the quarter in 13.1 seconds.
The low end torque runs out in the top end on L98s, i have driven enough of them to remember.

Simple mods may generate 20 rear wheel Hp, and even at an optomistic 300 HP, a 13.1 is a very good time.

 

[Mad-Mic]

let me rephrase what he means by stock.

stock motor. stock tpi unit. stock rear gears (3.07's)

the car is not completely stock. neither is mine. some peoples versions of stock is everything down to the paper filter. others is as long as the motor isn't cracked open, which his isn't.

BTW i've seen LT1 vettes run 13.8's and faster. i've seen LS1's run 14.2's and faster. so your going to tell me a LT1 can not be faster than a LS1?

driver skill + car setup = quickest times.

setup and tune doesn't have nothing to do with how much HP the car is making but makes all the difference in the world on how quick the car runs.

 

[warren s]

Yup, stock is a relative term.

With only "free mods" and simple bolt on items a 13.1 is still very fast and would represent close to a 100 Hp gain over stock.

I have taken apart a few "stock" engines that seemed to have camshafts made by Crower, and some really nice head porting. You never know.

 

[tpivette89]

i never said the CAR was stock... what i did say was "stock motored TPI Vette". the valve covers have never been off. the engine has never been rebuilt. the entire TPI intake setup is factory. it has the stock heads, cam, exhaust manifolds, intake, trans, gears.

14.8 in a stock 89 Vette? with a few spark plug wires disconnected maybe. stock TPI Vettes are capable of high 13 sec quarter mile times. ive seen 100% stock LT1 Vettes pull low 13s. stock LS1 Vettes can hit mid 12s. you seem to be quoting times from Car and Driver, not real people whove drag raced their cars.

like i said before if anyone truely thinks i am a liar, you are welcome to see my car run this Wed at Cecil. i always pop my hood to let the motor cool, so you can inspect it at will. many people there have seen my car run (ive been there almost every week for the last 5 years), and know my times are not BS.

thanks for sticking up for me Mic! and :eek on your new best times!! 102mph is good for 13.4/13.5s roughly with a low 1.9/high 1.8 60ft.