I will admit that I know nothing about V8's so I came here to get some answers. My friend has a 99 firebird formula automatic. I was wondering what kind of power it puts to the wheels stock. What kind of power should he expect with "long tube headers" and "true duals". Also what kind of 60', 0-60, and 1/4 mile should he expect assuming he is an average driver. He also has 245/?/16 nitto nt 450's.

 

you can read all about my wife's 99 formula by clicking the pink banner.

 

Plenty

 

WOW!! 13.5 is really impressive for a bone stock automatic. This can't be typical can it? When looking over the internet I saw sites that said that the 98 forumula 6 speed does 13.8 in the quarter.

I know that some of you may not like the g-tech performance meter numbers but he did 5.54 0-60 down hill, 5.94 and 6.09 0-60 on flat roads when it was stock. Is this accurate?

 

no, that's not accurate.
on a complete level surface, a healthy running ls1 firebird/camaro will do a 0-60 in 5 seconds flat

as for your earlier questions, i don't have a formula (ive a trans am) and its not 99, its a 2000.. but its an a4. there's very little difference between my car (when it was stock) and that formula.

with my only modifications being subframe connectors (they only add a little weight, and stiffen the chassis.. not a power adder) and an aftermarket airlid, i dynoed at 323 rwhp.. dont remember the torque, but if you really want i'll dig it up.

a healthy running ls1 firebird/camaro will run about 13.2 in a 1/4mi ... every car's different, so i've seen a few go 12.9 and a few go 13.5. this is, of course, assuming you're not at 527847237573 feet elevation.

 

Well that is no good for me. I guess it will be time for some forged internals for my little civic so I can turn up the boost because I'm sure it won't run anywhere in the 12's yet.

 

my 00 formula went 13.60 @ 101.66 stock. hers is 2 mph faster, but no quicker. funny thing about the tires, she has the same 245/50-16 NT450 as well.

as far as the times go, welcome to florida. near sea level helps.

 

My 02 automatic stock did 320hp on the dyno with 1200 miles on it. At the track in Houston I went 13.20 @104 with a 2.0 60ft stock with 1500 miles on the car. I put a 3 inch cut out and a vigilante 2800 stall and sliks with 10,000 miles on the car and went 12.50 @108 with a 1.7 60ft. I now have a tuned LS6 motor in the car and we will see what she does in a few weeks. I am hoping for the 11's and then never go back because I will not put in a role cage.

 

Like said before, every car is different. And unlike most other performance cars, the A4 and M6 on the LS1 are pretty much even in acceleration. Thats mainly due to having a great powerband with torque at every RPM.
How is he launching the car? Is he brake torqueing it? (one foot on gas the other on the brake) Tell him to brake torque it as high as he can without burning out (that will probably be roughly 2K RPMs). Then just let the brake go, that will get him a pretty good launch.

 

I told him about a million times to press the brake and give it gas to launch it but he refuses to. I finally got him to stop flooring it off the line so his launching strategy now is to go about 3/4 trottle and give it more gas as it starts to get more traction. His car feels like a monster off the line but it feels like it struggles after about 50 mph (this is comparing it to my car).

How would my friend's forumula compare to the 94ish camaro z28 m6 in terms of 0-60 and quarter mile in stock form.

 

that is strange. ls1 is known for great topend. our topend is generally *much* better than our low end (which doesnt suck either, mind you). i feel like my car's great and all, from the dig.. but it *really* lets it rip 80+ mph


the formula would destroy the 94 z28, stock for stock. ls1 vs lt1 == no comparison. 2 completely different motors... with ls1 being the better one, by far. (sorry, lt1 guys.. lets not open up this can of worms).

use the search button. read some threads.

by the way, your friend refuses to brake because he most likely doesn't want to fsck up his brakes. get him to invest in a linelock, they are dirt cheap. the way they work is, you press a button and voila.. your rear brakes are disabled, car's held in place by the front wheels. since we are rear wheel drive, and the brake's disabled on the back wheels - there's no screwing up the brakes.

just remember to turn them back on once you get going.....

 

When I was saying that it struggled, I really didn't mean that it felt slow. I was just kind of comparing it to my car which is slow as nuts off the line but just feels faster in the midrange and topend. But I know my ability to feel isn't an accurate way to judge.

 

I assume that your civic is a manual. Manuals always "feel" faster, mainly I guess to the fact that you switch harder than autos do.

But my friends 00 Z28 A4 was scary quick from highway speeds. That thing did 70-100 in no time.

 

Which is kind of ironic considering the manuals kill the autos from on the highway.

 

well having a turbo kinda helps with that top end a bit.

 

0-60= overated/retarded form of "performance" analyzation

GM (A4) 4l60e automatic transmission's= awesome/no joke

Firebird Formula= one of the lightest f-body's

Average STOCK F-body dyno #'s= ~290-320 RWHP & ~310-340 RWTQ

Average Quarter mile= ~13.3

LS1 top end= the ****

Acceptable/average 60' on street tires= 2.0

Average HP after full exhaust (ie. Long Tubes & True Duals) = ~350 RWHP

Does the LS1 struggle after about 50 mph? HELL NO! It DOMINATES!


Good.


And welcome to the forum. Feel free to ask more questions.