what would a stock 5.0 Formula 5 speed run in the quarter with an average driver, and say it has the optional 3.45 gears, with 230 hp at 4800 rmp's and 300 ft/lbs. at 3200 rpm's shouldent it be up there with an L98 Iroc w/ 700r4 and 2.77 gears??? any one who has a stock Formula what is your best 1/4 mile times
Thanks -Don

 

How do you know that you are producing 230 HP? That seems high for a stock 5.0 motor doesn't it?

If your motor is in good shape I would guess that you will run in the neighborhood of 15.4 in the 1/4. On the otherhand, if you are making 230 HP at the flywheel and 300 ft. lbs./torque, you may get into the mid 14's. It's really hard to say as there are so many variables involved.

 

yo are yo runing tpi or tbi
if you are stock runing tpi 305 with a 5 speed and 3.45 gears i see you running about 15.4 like the man said but if you are running tbi i see ya running 16.2-15.8
and if your have a stock tpi with 5 speed from the factory the hp is about 205hp
and if you have a tbi the hp is 170hp
i have all my mods in the sig and i think im around 250hp im dynoing it nect weekend

 

according to Tech Data on this site, the 89 TPI 305 with 5 speed makes 230 hp.

 

Must be a typo. The 5.7's made 230 HP. At that is with the Camaros and I can't see that would be a difference...

 

Hey

What are you guys talking about. The 1989 Formula 305 TPI had 230HP and 300TORQUE. If that car has a 5 speed transmission I would say that you would be able to pull of 14.7 to 15.2. What are u guys thinking. I have a 1985 IROC Z Camaro with the 305 TPI and an auto trans with 3.42 gears and it does 15.3 in the 1/4 mile. There is an artical on www.iroc-z.com that say the stock 1985 IROC Z Camaro with 3.42 gears will do 14.93 in the 1/4 mile and the stock 1985 Trans am with 3.42 gears will do 15.0, and those engine were only rated at 215HP and 275TORQUE, and an auto trasmission on top of that.... So if u have a 305 TPI 5 speed with 3.45 gears and 230HP and 300TORQUE u will no doubt about it do 14.7 to 15.2.

http://camaroz28.cardomain.com/id/56424

 

Nice car!

There is some misinformation on some sites but we won't go there. There is no way that a stock '85 IROC will do anything under 15 in the 1/4 mile. Auto or stick. It will never happen I guarantee it. The 1985 305 IROC was rated at 190 HP. With a manual tranny it aint gonna do no better than mid to high 15's.

The 305 in the IROC's were 190 HP until 1990 as it had 230 HP. The 5.7's for 1990 had 240 HP.

You are probably right about the Formula, I don't know much about them.

I have an '87 IROC with 3:73's (auto) and some other minor mods and I was running 15.3 last year. This year I should break into the 14's, I hope.

 

Hey

U wanna bet that a brand new 1985 IROC Z Camaro could do that 1/4 mile in 14.93. It is published in a magazine where they tested the trans am and iroc z for 1985 and there results are posted in the magazine... If u done belive me u can take a look.

Artical http://www.iroc-z.com/articles/artic...Magarticle.htm

http://camaroz28.cardomain.com/id/56424

 

I tend to take very lightly what I read in magazines. Sure, they can print whatever they want. They have their own mechanics fine tuning this thing to get it to run. That is not the same car that you or I would buy. Still, I see what they run at the track. A stock 305 just can't do it.

 

Well, to add some fuel to the fire...

The 305 TPI in the Camaros in 1985 were rated at 215HP. In 86 the rating dropped due to GM going to a stupid cam. 14.9 with one? I think that might be sugarcoating it a little... Sounds like someone was doing a little bit of tweaking to get the car there.

The 89 Formula will probably run in the 14's somewhere unless its in a bad state of tune. Not sure I have anything in print that shows an 89, but I cant see why it wouldnt run 14's.

 

According to "Catalog of Camaro ID Numbers 1967-93" that is not the case. 190 HP. No 215 HP 305 motor was produced that year or any other year from 1985-90. The 305 did however, in 1990 jump from 190 HP to 230 HP.

Again, I am quoting from my reference book. I tend to put more stock into a published book than websites. Not that there aren't great sources of info. out there (this site is one of them) but you have to be able to sift out the crap.

 

Well, then the book you have is wrong. I would copy a page of the Camaro brochure of that year, but I dont have one (not into Camaros). I do have a TA brochure, says 210. The 5 less is due to the intake ducting. I also have a Car and Driver magazine says 215. I'd sit here and argue with you but its not worth my time. Go research it with some other material, you'll find out 190 is wrong.

Trust me, its 215.

 

Relax MadMax. That is why I said that I was quoting a reference manual. I am not arguing with anybody, just stating what my manual says.

If you have other info., please share with us as I did stating my source. I don't have any brochures about the 1985 Camaro.

It is very possible that the book is incorrect.

 

An 89 Formula 305 TPI 5spd should be able to run anywhere from 14.8-15.2. The twin cat-posi cars from 89-92 were the fastest 305's made.

88-215 hp 285 lbs tq
89-220 hp 295 lbs tq(twin cat)
90-225 hp 300 lbs tq(mass air deleted)
91-92 230 hp 300 lbs tq

p.s. 85's definitely had 205 hp...(215 Z28)

 

Ok, so the 1985 and the 1990 Camaro 305's had the most HP.??

1985=215
1990=230

I know why the 1986 305's were less but what about the '87's and '88's?

Still, where I can I verify the Camaro HP numbers other than the manual that I have?

Chilton's manual for 1982-88 confirms what my other reference manual states about the 1985 Camaro 305 TPI having only 190 HP.

That is 2 references. Please tell me where I can find information to prove otherwise, besides the brochure which I don't have.

 

Hey

I think the 1987 305 tpi engine has lower power because of the heads they used or somthing like that. I heard that it was because they had crap heads in the 1987 305 TPI engine...

http://camaroz28.cardomain.com/id/56424

 

Camaro White book?

Sounds like your ID book and Chiltons were both out to lunch, probably confusing the G and F motors and their HP ratings. Didnt even realize the 85 Camaro rating was an issue, I guess everyone has to rewrite history somewhere by doing bad research.

According to my 89 brochure, the dual cat 305 in the Formula was putting out 225hp. The non dual cat cars were 215, and the auto cars 190. Should be a 14 second car.

 

I'd say high 14's-low 15's.

 

in 85?
didn't they have 215 hp and 245~tq? then they went penut cam in the auto's in 87 and got 190hp and 290~tq?.. stick got the 350 cam which brought it up to 215hp, 295~tq?
and when it went SD, the auto went to 210 and the manual went to 225hp?
then in 90 they all got the 350 cam so auto or stick it was the same (minus the drivetrain loss)

seen some stock G92/1lE 5 speed cars hit mid to low 14's..

 

89IROC
Formula
Trans Am M5 LB9 V8 9.3:1 5.0 (305) 220@4400 290@3200 TPI 3.08 ---- ---- ----
89 IROC
Formula
Trans Am M5 LB9 V8 9.3:1 5.0 (305) 230@4600 300@3200 TPI ---- 3.45*

 

The Camaro White Book IS THE reference book to get. I have been looking for it for months. In my work travels, I have looked in book stores everywhere from Florida to Maine and can not find it. It is out of print. I saw it once in a book store and was going to buy it and decided that I would pick it up later. Wasn't there when I went back a week later.

Ok, the 1985 (Camaro F motor) had 215 HP. I wish my '87 did.ha-ha

 

When I get my crap together and go to the track I'll let you know what a "95%" stock car will do.

Feels like easy 14s but who knows...

By the way, the 89 sales brochure says 225hp.

See it here:

https://www.thirdgen.org/newdesign/b...chure10-11.jpg


1989 Formula
305TPI / 5-speed
Mods: K&N, Gutted MAS, Dynomax cat-back

 

Have you guys ever heard of a thing called ALTITUDE? A car will run completely different in a higher alt. than in a lower one. (the fastest at sea level) I really don't care about horsepower ratings either. No two cars I identical anyway, not to mention driver skill!

 

Of course. Have you ever heard of NHRA correction factors? Some of us like to know what the specs are on our cars. Not so much to determine what the ET will be but rather to be educated about our cars. Autos are a hobby and one should know what was available year by year so you know exactly what you are getting when you purchase one. Besides, it gives you a good baseline when deciding to modify your car.

The only way to really know for sure what any given car will do at the track it take it there and run it. Time slips don't lie. Anyways, when you are talking about 3rd. gen cars they all run different as most have been in many hands and *** only knows what done to them. The car has to all be working together to get the most performance out of it.

 

My point was, it is hard to compare cars around the country. Just to many variables. The only way to know for sure is to run it yourself. For more fuel on the fire, my 115k 87 GTA, L98, AT, 3.27 posi, completely bone stock, on a radial, runs 9.40's in the 1/8 (at sea level)

 

Very true!

 

My fastest, the very first time i went to the track with a 5 spd, and poor poor driving skills was a 15.3. This is on a bone stock 88 formula. So if you could learn to drive! i'm sure it could be easy 14s. That was me burning em in first and second. Good luck.

Soon to be 88 Formula TT.