Formula413's Vehicle Feed
Vehicle Soundclip
Sleepwalker
Basic Specifications
Vehicle Color: Dark Yellow Green MetallicEngine Type: 8 Cylinder
Transmission: Auto
Est. Horsepower: 305 HP
Est. Curb Weight: 3,450 lbs.
At the Track
Best 60': 2.03Best R/T: PFFT!!!
Best 1/8 Mile ET: 8.84
Best 1/8 Mile MPH: 80.58
Best 1/4 Mile ET: 13.76
Best 1/4 Mile MPH: 100.02
Formula413's 1997 Pontiac Firebird Formula
Sleepwalker
About this Current Vehicle:
I've always loved F bodies and especially Firebirds since I was a kid, and I finally bought one in October of 2006. It's a pretty typical LT1 F body, just a few basic modifications. I'm pretty happy with the car just the way it is so I don't have big plans in the way of mods. I really enjoy driving it, working on it, and learning about it on forums like LS1tech.com.
Vehicle Journal:
Nov 27
New wheels
Finally got a few pics uploaded of the car with the new wheels. They are WS6 wheels that have been painted in a dark silver metallic finish. It's definitely different, gives the car a more sinister look.
Aug 21
New exhaust
I changed the exhaust back in early spring but never got around to updating here. Instead of getting a full catback I just replaced the factory crossflow muffler with a Magnaflow single outlet muffler and a turn down. I thought this would look good on my car since it is a Formula and not a Trans Am and doesn't have two openings at the bottom of the bumper for the exhaust tips. Plus the stock chrome tips were always getting sooty and I figured why have nice looking tips if they just keep getting dirty? I think it gives the car a nice clean look, a bit of a sleeper look since it resembles a V6 Firebird exhaust.
The sound out of this thing is great, nice and deep with no rasp at any RPM or throttle. Idles real quiet, not loud at all until I get on it, then it opens up with a nice deep rumble. Plus based on my track times I picked up a few horsepower too, maybe ten rwhp or so.
As you can see this muffler tucks up in there nicely. It's a little smaller (and lighter) than the stock muffler and fits right onto the factory I-pipe (2.5" in / out)
Nov 18
Broken tranny mount...yikes!
I just recently got a lesson in what happens when the transmission mount breaks on an F-body. I took off fairly hard from a standing start and felt a huge impact from under the car as if I had run over a speed bump at 30 mph. I knew right away what it was from hearing other people describe it, but I was not expecting it to be so violent, it scared the crap out of me at first. Fortunately it is cheap and easy to change. I used a standard rubber mount rather than one of the aftermarket polyurethane mounts, I did some research first and found that a lot of people had problems with added vibration and noise as well as damage to the transmission itself from running poly mounts.
Factory Options:
3.23 gears, traction control, t-tops, premium sound system, power windows/locks/mirrors, alarm system, anti lock brakes
Exterior Modifications:
Custom painted WS6 wheels
Interior Modifications:
N/A
Performance:
Moroso cold air intake, throttle body air foil, Magnaflow single outlet muffler
Homemade mods: catch can, silencer delete plug, manual fan switch
Rubber: Nitto NT555 tires on the front and NT555R drag radials on the back
Suspension/Chassis:
N/A
Drivetrain:
N/A
Electronics:
Factory Monsoon stereo with ten speakers and external amplifier. Like many other Monsoon owners I have had to replace both front door speakers and both sub woofers due to the originals wearing out and distorting. It cost about $160 for all four speakers but was well worth it; when it's firing on all cylinders this system sounds great.
To-Do List:
Right now I'm toying with the idea of a higher stall torque converter, maybe something like a Yank 2800.
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9 Comments on Formula413's Firebird Formula
thanks for the comment you have a nice car yourself
dont like the kyb's there ok for street but i auto x this car more than drive it around hope to get coilovers
haha thnx, you come through springfield often?
Nice lookin formula!!
Nice ride man. I'll be at the meet in May. I'll see you there.
nope havent ran it at the track yet, hopefully next summer... My rear wont make it as of now.
Lol I guess should mention those. I should you the ricer logic when it comes to things like that.
Nice car.
Clean car. I went 13.3 at 109 MPH untuned after headers/true duals. I will have the car dyno tuned here locally by New Era Performance for $275 and will be heading back to the track. Mid-/high-12's should be possible with the right launch/track condit
Let's see some pictures