This summer i plan on getting pacesetter headers/y-pipe, asp underdrive crank pulley, trans go shift kit.

Will this get me into high 15's??

(cant take it to the track till next summer)

 

Nope. Maybe around 16.7-16.9 based on how maintained and new the rest of the motor and drivetrain is. Yoiu have a high milage neglected car with original sensors and parts then I doubt you'll see a 17 sec flat 1/4

 

its in perfect shape, i already got some mods as u can see on my signature. I was told with the mods i already had i should see 16.5 on a good engine.

 

I got to tell ya them 3.1s are not all that great when it comes to drag racing although tire spin wont be a problem Just go easy on it ! or you will be walking home from the track .

 

what about induction?...do you have something custom...maybe you could run a dual snorkel or ram air....that would help, especially with a nice exhaust

 

3.1s aren't the best drag motor, no. but tire spin isn't that much of a problem, either! these little motors can take a beating and run fine, really.

 

Greenbird, I hope I am not discoraging you, I am just stating facts because you asked. I am not trying to be mean in any way.i am giving you a straight up answer.

Your "mods" are not going to give you any gain but maybe 2/10th of a second off stock 1/4 times on a brand new car off the showroom floor. They did mid 17's.

You have an auto trans. A simple shift kit will not make the car any faster if the stock clutch packs, servos, bands, etc are still used in the internals of your factory 700r4- especially one that has milage on it and is worn.

It takes a whole heck of a lot more than you are asking to get to mid 16's on an auto, and 15's is a whole different ballgame.

That exhaust mod is just basically giving you a different sound. All nmodern catalytic convertors sold now are considered "high flow" compared to the original factory unit from the 80's. So whether it is the original one completely burned up or a new unit, they are the same increase above 4K but the burned up one will lack emissions quality.

Plug wires? the factory ones new are just as good as anything you could buy aftermarket and the 1/4 mile times tested with these cars doing mid 17's was with brand new wires on a brand new car. Better wires are only for longevity or reliabilty over time without increasing ohms. So your aftermarket plug wires will last maybe 50,000mile where the stock ones would last 30,000 on the stock coil and motor heat. A hotter coil is good as long as you are not heatsoajking the wires and have sheilded the coil from heat, And the coil is in fact delivering more voltage to the chambers than the factory setup. Maybe .05 of asecond difference in the 1/4 at most.

Any new AC Delco filter that came stock will flow as well as K&N's when new. You positive doing is the new intake air routing. The Firebirds air induction to the TB was terrible, so that is your biggest gain for a V8, but I have seen nothing showing any kind of restriction on the V6's that are half the engine volume as the V8's

The 180* running temp will givce you a cooler more dense fuel charge as long as you are running an adequate aftermarket radiator to maintain that 180* thermostat. Just because it is in there doesn't mean the motor is staying that low temp. Thats just the temp it opens at and if the radiator is not sufficiant to keep the coolant mix that cool then you are not gaining any benefit unless it is a very cool day. Doubtful you are staying that cool on a 15-20 year old radiator.

 

I also just checked your link and realised you have a late model Firebird that is also a t-top car. Firebirds are heaviers as well as the t-top option. You are probably sitting more at about 3400+ curb weight. You will definately not be getting lower than 17 sec flat 1/4 times even with the headers and asp crank pulley.

Redraif has this same problem. Weight on her cvar is a major restriction as to why she is not running faster times. She has some very respectable Dyno runs, the weight of the firebird is killing her times. Put her motor in my car and it would be running low 15's with my drivetrain.

 

i just went to a 1/8 mile track in jacksonville, i was having traction issues big time no matter what i tried and i got 245's on the rear, what can i do to get it to hook up better?
i dropped the rear pressure to 15#'s and still spinning in 1st, 2nd and chirping into 3rd. i did manage a .514 reaction and a 10.8@64.12mph run with the traction problem. everyone was running 5.seconds slower than they normally run on the track on sat. i am going this sat again to see what is up and if i can get it running some reliable numbers. officials thought i should have been down at 10 flat, but no telling til i get the traction issue fixed. engine was running really lean too.
i pulled a 2.50 60 ft time too due to the traction.


am91, can i get some help with the traction issues?

 

87blue, are you running 15 or 16 in. wheels? a 245 tire should be enough. i have always had 235/60/15s on the back of my car...that's what was on it when i bought it, that's what i've replaced 'em with. stock (auto) i pulled 2.37 60' times, all day. now (with gears and posi), same tires, i pull 2.05s. this is all bone stock suspension, too (other than boxed LCAs which made me spin before i put my new tires on).

 

i am running 15 inch wheels, remember i am running a manual, and i am spinning for like the first 10 feet when i line. i don't know what the heck is going on besides i need posi bad. i had no wheel hop, just tire spin. i never had this problem with the mustang, heck i pulled a wheelie in that and broke the upper control arm on the passenger's side the first run i made in that about 4 years ago!
i am thinking about going to the wider 255 tires or even a 265 when i get my new rims!

 

part of tires is also the tred design and compound.

My daily drivers 235/65/15 cooper cobras spin all day long.
My scca 245/55/16 firestone sz50ep tires will hardly spin.

Difference:
tred design
compound
10mm width
16's are slightly smaller in dia (should make it spin more)


I am unsure as to which set is lighter.

Dont forget about your weight transfer stuff too. Unhook front bar. Have stiff shocks in the rear, and loose ones up front.

 

i have the same problem w/ traction. i cant get below a 16.1 due to tire spin. thats on cooper cobras though. im hoping to slap in a posi really soon and get back out there. it should make a big difference. although, im going to stick w/ 3.42s cause i occasionally have to do a fair amount of highway driving.

 

haha oh my.... 15's with the six good luck on that, my six went 18.2 so i have no faith but.. yeh

 

my tires are dunlop gt qualifiers. they are actually pretty hard but they seem to work with my setup.

 

i am running a kelley offshoot from the kelley chargers. they are great tires, don't spin easily on the road, but when i get to the track, i can't hook up. what are you guys talking about with unhooking something in the front? is it the torque arm going to the tranny or something in the front suspension?
i already raised the back with a set of spring clamps to make the rear more stiff, should i make it even harder using rubbers in the spring so when it transfers weight that it goes straight to the rear tires?

 

talking about unhooking the front sway bar.

 

i will try it and see how it works, but that is the first time i ever heard of that. do you think that putting the rubbers in the rear springs will help?

 

NO!! take the spacer clamp things out! i forgot you had those in there, thats your problem. stiffer rear (or front) suspension kills weight transfer.

edit: unhooking the front sway bar can help but i have never had any issues with leaving it hooked up on my car.

 

alright i will take them out saturday before i go to the track. maybe then i can get to 10 flat like i should be running. i can't believe the .514 rt that i pulled last weekend. that was only the 4th run of the day for me. it really shocked the **** out of me. maybe that is why my 60ft times are so far off with the clamps in there. i put them in to keep the car from bucking hard and throwing the front end sky high while driving on the street. i think that i blew the limited slip too, cause no more 1 wheel spins, now both spin at the same time........ oops
i really impressed the guys with the burnouts the thing is capable of in the pit! they didn't realize that theese engines will scream to life like mine does once i get traction.

 

What are the 1/4 mile times of the 305 TBI? I'd think he'd come close to that at least...

 

What will mods will make my car run atleast high 15's? I dont want a power adder or rebuild just bolt-ons.

Will headers/y-pipe, shift kit, underdrive crank pulley, custom plenum/ 62mm tb, crane powermax h260 cam, 1.6 roller rockers put my bird into high 15's? (including the mods i already have)

Thank u for the replys and no your not discouraging me from modding my car i just wanna kno what it will take to get into 15's without rebuild/3.4 swap/power adder

 

need to learn how to drive if your having tire spin. i have 235s on the back of my 15in rims and i can pull a 2.28 still

 

Youi guys need to just buy decent tires period and get a rear locker. Tractionm on a 15 second car should not be a problem unless you have and open diff and crappy tires. Weight transfer isn't going to cure your problem.

Blueracer, you act as if you have hardly ever drag raced before and speak like an amatuer. When you going to admit kid that the so called 8sec mustang you own isn't a reallity? Or did your memory aready slip on that conversation.

 

witrh a shift kit and lower gears, you will be faster than your same car with manual shift...the idea that manuals are generally faster is false in my opinion...I'd rather drag race with an auto any day...

 

You're missing the point.

Ah forget it. I already explain above. Its pointless live and learn.

 

rftc, i never raced a manual before on the strip, the mustang is a slap stick 3 speed. things are really different between the camaro and the mustang. the mustang, it is easy. the camaro, i am still learning the suspension. p.s i havent' slipped, it has just been 5 years since i last drove anything down a drag strip