305 iroc vs 08 srt4 caliber
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From: blairsville Ga
Car: 89 iroc
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305 iroc vs 08 srt4 caliber
ok so my friend just got a new car and i wanna get some thoughts on whats gonna happen. my car is a 89 305 iroc with headers catless flowmaster exhaust, jasper 700r4 with a monster shift kit and a 373 rear and a stock 350 computer chip. absolutely nothing else done to the car. my car recently beat his previous car which was a 09 vw gti with catless straight exhaust, cold air intake, diverter valve spacer, and a wot box which is launch control and no lift shift. i beat him by about a car and a half in the quater now he just got a 08 srt4 caliber with some aftermarket exhaust and a k&n intake. do u think my car will beat the caliber???
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Re: 305 iroc vs 08 srt4 caliber
That Caliber will kill you. Not to say your car isn't quick, but that caliber is properly quick. 300bhp 260tq Turbocharged 2.4L Inline 4 cylinder (fwd sadly) 0-60 in well under 6.0sec and a limited top speed of 155mph. weighs just over 3100lbs and it's parred with a 6 speed manual. Quarter mile time is about 14sec.
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Car: 89 iroc
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Re: 305 iroc vs 08 srt4 caliber
i no for a fact my car is runnin at least a 14 or less cause his gti ran a 13.7 at the track witch will b atleast a 14 on the street and i beat him already in the gti
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Re: 305 iroc vs 08 srt4 caliber
Really? The GTI is a stick as well I believe, so he's probably pretty good with it by now. It's a drivers race then. It's too close to tell for sure who will win based purly on statistics. Light em up. Tell us who wins.
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Car: 89 iroc
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Re: 305 iroc vs 08 srt4 caliber
i aught to no by Wednesday or Thursday and the gti was a 6 speed to im just amazed the 305 is keeping up with a 20000 dollar car
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Re: 305 iroc vs 08 srt4 caliber
Your setup sounds like it would trap in the low 90mph range 1/4 mile, because I had a 350 with the same mods but 5-speed trans and I trapped 96mph. A bone stock caliber is said to trap around 103mph. If you guys race from a roll you are doomed! Only way you would have a chance is off a dig or pray that he can't drive.
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Car: 89 iroc
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Re: 305 iroc vs 08 srt4 caliber
o we r defenatly goin from a dead stop and by about a quater mile i was doin anywhere from 100 to 110 cause it was already in od
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Re: 305 iroc vs 08 srt4 caliber
Originally Posted by camaroboy199290
ok so my friend just got a new car and i wanna get some thoughts on whats gonna happen. my car is a 89 305 iroc with headers catless flowmaster exhaust, jasper 700r4 with a monster shift kit and a 373 rear and a stock 350 computer chip. absolutely nothing else done to the car. he just got a 08 srt4 caliber with some aftermarket exhaust and a k&n intake. do u think my car will beat the caliber???
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From: CT
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Re: 305 iroc vs 08 srt4 caliber
i was doin anywhere from 100 to 110 cause it was already in od
and why are you running a 305 with a 350 chip?
good luck but don't put money on it.
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Re: 305 iroc vs 08 srt4 caliber
Originally Posted by 86Z
i highly doubt that....
Originally Posted by camaroboy199290
my car is a 89 305 iroc with headers catless flowmaster exhaust, jasper 700r4 with a monster shift kit and a 373 rear and a stock 350 computer chip. absolutely nothing else done to the car....
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From: blairsville Ga
Car: 89 iroc
Engine: 355tpi
Transmission: jasper 700r4
Axle/Gears: 4.11 lsd
Re: 305 iroc vs 08 srt4 caliber
yea a 350 chip cause when i was gettin everything strait with the car some a$$ sole me a chip for a 85 and said it was for the 89 so i got the 350 one for free at crazyrays and yea no other mods and im defenatly over 100 in the quater
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Re: 305 iroc vs 08 srt4 caliber
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From: blairsville Ga
Car: 89 iroc
Engine: 355tpi
Transmission: jasper 700r4
Axle/Gears: 4.11 lsd
Re: 305 iroc vs 08 srt4 caliber
i def will take it to the track next time they have a test and tune and flat out i no it is over 100 cause a stage 4 cobalt is only beating me by two and a half or three cars in the quater and that car is puttin down over 300whp
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Re: 305 iroc vs 08 srt4 caliber
i raced a 10 sec camaro and he was about a car and a half in front of me on the track with my 305, i trapped 110 mph...
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Re: 305 iroc vs 08 srt4 caliber
The Caliber SRT-4 is going go own you. It will beat you like a red headed step child. Your "350" chip is slowing you down, you are going to be running lean because the chip is spec'd for 22lb/hr injectors and your 305 has 19lb/hr. So you are probably knocking at WOT like that annoying child who can't stop telling knock knock jokes on the bus.
You have no hard numbers, but here's the clue, a 103mph trap speed. One Hundred and THREE miles per hour in the quarter mile. The ONLY hope you have is that he screws the launch up bad.
Get your car to the dragstrip and run the #s for real so you have something to actually bench race with.
You have no hard numbers, but here's the clue, a 103mph trap speed. One Hundred and THREE miles per hour in the quarter mile. The ONLY hope you have is that he screws the launch up bad.
Get your car to the dragstrip and run the #s for real so you have something to actually bench race with.
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From: blairsville Ga
Car: 89 iroc
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Re: 305 iroc vs 08 srt4 caliber
the car actually runs rich and im thinkin if it does beat me its not gonna b more than a car or two but we will c tonite if he has the ***** to call me and go out and race
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Re: 305 iroc vs 08 srt4 caliber
And FYI, Two of my buddies raced on the highway from a roll. one had a 480 RWHP nissan that traps 125 mph in the quarter, the other had a 671 RWHP supercharged dodge viper that traps 135 mph. Through 2 gears up to 145 mph, the viper had 1 car length on the nissan, yet they trap a 10 mph difference. Only Dom torreto and brian spilner judge races by carlengths, so get a timeslip and know for sure.
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Re: 305 iroc vs 08 srt4 caliber
Originally Posted by whitedevilTA
Through 2 gears up to 145 mph, the viper had 1 car length on the nissan, yet they trap a 10 mph difference....
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Re: 305 iroc vs 08 srt4 caliber
Was that a Nissan GTR? Cause of so he should have the advatage on the launch with AWD and launch control
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Re: 305 iroc vs 08 srt4 caliber
It was a nissan 240SX with a built supra turbo engine in it. And they raced from a roll so there was no launch factor even there. I even have the run on video lol. Cool seeing two cars with over 1000 HP combined racing. Sounds so amazing.
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Re: 305 iroc vs 08 srt4 caliber
Awesome. Though it's no suprise to me that the Viper won. With a 8.0L V10, those things just put out power so easily an so naturally. You can get thos up to 2000hp. With some Massive twin turbos of course.
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From: blairsville Ga
Car: 89 iroc
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Re: 305 iroc vs 08 srt4 caliber
well raced him tonite and didnt loose as bad as i thought only lost by a lil less than 3 cars by a little further than the quater
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Re: 305 iroc vs 08 srt4 caliber
About what I figured...but kudos to you for trying man! Start modding up the 305 a bit more now, and get her to the track to give you a baseline.
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Re: 305 iroc vs 08 srt4 caliber
Camaroboy, what, may I ask, was your 1/4mi time and speed?
Last edited by SKELITOR117; Sep 17, 2011 at 01:45 AM.
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Re: 305 iroc vs 08 srt4 caliber
Sorry, ment to addres that to the OP. Though I would very much like to know what a T/A with a turbo 5.3 would do.
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Re: 305 iroc vs 08 srt4 caliber
if that caliber is about a 14 sec car and he drove pretty good and got you that bad, your car is around a 16 sec 1/4 car.
i once raced my friends stock camaro with just exhaust and it was a 16.2 car
i once raced my friends stock camaro with just exhaust and it was a 16.2 car
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From: blairsville Ga
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Re: 305 iroc vs 08 srt4 caliber
three cars in the quater defenatly isnt two seconds behind probably on the street with the spinnin i did i still prob ran a 14.5 and im not gonna b moddin the 305 cause its my dd and very reliable. ill just get my 383 rs done when i get enough money straight and he def wont beat that
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Re: 305 iroc vs 08 srt4 caliber
Our cars are 16 feet long.
3 car lengths = 48 feet
Lets assume non ideal surface condition, so lets assume the caliber hit 100 mph at the end.
By my math, at 100 mph, 50 feet is 1/3 of a second behind. Not an exact computation, I didnt bother doing the more accurate formulas just because I hate working with standard units.
3 car lengths = 48 feet
Lets assume non ideal surface condition, so lets assume the caliber hit 100 mph at the end.
By my math, at 100 mph, 50 feet is 1/3 of a second behind. Not an exact computation, I didnt bother doing the more accurate formulas just because I hate working with standard units.
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Re: 305 iroc vs 08 srt4 caliber
An 89 auto 305 TPI runs in the mid 15's. So with only a catback you'll run mid 15's still. Thats the end of it. Fastest 305 TPI cars were the G92 cars with a 5 speed and 3.42 gears, and they only hit a mid 14 on the best day with an excellent driver. Spinning, I wouldn't be surprised if you ran a low 16 1/4. Unless you've actually been to the track, you have no idea how much spinning lowers the time. My mustang lost a full second because I spun first. Ran a 14.5, and on the next run hooking with a good launch I did a 13.5.
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Re: 305 iroc vs 08 srt4 caliber
unless u missed it i do have a performance trans and a 373 rear so im defenatly in the 14s
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Re: 305 iroc vs 08 srt4 caliber
Do you have an aftermarket stall converter? If not then the trans is not helping you at all....jasper makes stock remanufactured trannys for the most part. The 3.73's will help but I can't see them making a huge difference on a stock 305 tpi. Don't say you are "definately" in the 14's unless you go to the track, because a ton of people I know were "definately in the xx timeframe" and they were very dissapointed when they found out what they actually ran. As I said before, my built cammed 305 TPI ran 14.0 with a 5 speed and a good launch so I'm pretty skepticle yours is in the 14's unless you get a timeslip to prove it. Not knocking you, but unless you have proof, you can't make that assumption.
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Re: 305 iroc vs 08 srt4 caliber
Wow camaroboy your posts are painful to read.
I love the thirdgen but I am putting my money on the dodge.
I love the thirdgen but I am putting my money on the dodge.
Last edited by midias; Sep 23, 2011 at 11:46 AM.
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Re: 305 iroc vs 08 srt4 caliber
three cars in the quater defenatly isnt two seconds behind probably on the street with the spinnin i did i still prob ran a 14.5 and im not gonna b moddin the 305 cause its my dd and very reliable. ill just get my 383 rs done when i get enough money straight and he def wont beat that
Seems your hopes are quite high. It takes a lot more than just having a 383 bottom end to be fast... I've seen 383's run 14's b/c they weren't set up right. To be honest with the posts I have read in this thread it seems you will need some help to put together a good running engine. Not knocking you man but that's what I'm seeing. On a good note why do you think this site is here? to help people with their cars.
Post a video of your track run with the 305... My buddies stock 9C1 Caprice runs 14.6 @ like 96 or something and that car rips my Camaro off the line, I run him down as my Camaro will run 13.5 @ 107 but still it takes some car to get over a 100mph trap speed. It's the best time of the year to go! So go to the track now! Thread Starter
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From: blairsville Ga
Car: 89 iroc
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Re: 305 iroc vs 08 srt4 caliber
o im sure the 383 is built right and everything it built to handle the stroker on the car. and yea i know the site is to help but that car is not gonna b any slower than 12.00 and if it is slower than that its gonna be driven into a tree
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Re: 305 iroc vs 08 srt4 caliber
You have very high hopes, and not much experience it seems. 12.0 is fast.....it's going to take a lot of motor to run 12.0, and at the minimum you need excellent quality heads, a pretty good sized cam, and def no stock TPI setup. I'd say you'd have to make around 370 rwhp to hit that goal, and have a suspension and tires that can launch very well. Good luck.
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Re: 305 iroc vs 08 srt4 caliber
You have very high hopes, and not much experience it seems. 12.0 is fast.....it's going to take a lot of motor to run 12.0, and at the minimum you need excellent quality heads, a pretty good sized cam, and def no stock TPI setup. I'd say you'd have to make around 370 rwhp to hit that goal, and have a suspension and tires that can launch very well. Good luck.
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Re: 305 iroc vs 08 srt4 caliber
You have very high hopes, and not much experience it seems. 12.0 is fast.....it's going to take a lot of motor to run 12.0, and at the minimum you need excellent quality heads, a pretty good sized cam, and def no stock TPI setup. I'd say you'd have to make around 370 rwhp to hit that goal, and have a suspension and tires that can launch very well. Good luck.

I second that. Good luck. And get a time sheet next time. Thread Starter
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Re: 305 iroc vs 08 srt4 caliber
what do u think im gonna put stock heads and a turd of a fuel injection on a 383 and no i dont have a $hit ton of experence but im not dumb its got a set of sportsman ll heads with a little porting a big single plane intake and a 750 dp and its got rear coilover drag setup with adjustable lca's and torque arm so yea im sure its gonna b under 12's
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Re: 305 iroc vs 08 srt4 caliber
U will beat him I didn't read all of it I beat more hp cars with my 305
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Re: 305 iroc vs 08 srt4 caliber
damn man i wish i had your kinda of atitude when i was building motors and had the cash to do it. hell im surprised my 383 LT1 with a 6 speed and 4.11 gears cutting 1.9 '60s wouldve been quicker then 12.00....... i guess if you built my 383 then i would have been quicker......
best i ever cut with mine was a 12.65 at high 11-s that was a 383 LT1 58mm TB, msd opti, wires, P&P intake to match heads and TB, a set of P&P LT4 heads, LT4 hotcam, running in the 11.8-12 : 1 comp on race fuel, Long tube pacesetter headers full true dual all the way back with dynomax bullets on a nitto DR with 4.11 LSD out back and all i could turn was mid 12s im not the greatest driver by any means i spun a little in 1st but from 2nd,3rd, 4th she pulled all the way through....
like previously stated, you have high hopes man. i hope you get the outcome you want but dont rely on the fact its a god almighty 383 will put you into the 12s
best i ever cut with mine was a 12.65 at high 11-s that was a 383 LT1 58mm TB, msd opti, wires, P&P intake to match heads and TB, a set of P&P LT4 heads, LT4 hotcam, running in the 11.8-12 : 1 comp on race fuel, Long tube pacesetter headers full true dual all the way back with dynomax bullets on a nitto DR with 4.11 LSD out back and all i could turn was mid 12s im not the greatest driver by any means i spun a little in 1st but from 2nd,3rd, 4th she pulled all the way through....
like previously stated, you have high hopes man. i hope you get the outcome you want but dont rely on the fact its a god almighty 383 will put you into the 12s
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Re: 305 iroc vs 08 srt4 caliber
yeah, those SRT4's are pretty quick little cars....I kill them in my SS HHR though 
I'm running 2 tunes though..GM Stage 1 Turbo Upgrade then topped it off with a custom Trifecta tune...haven't had it on the dyno yet...but Vince from Trifecta Performance said it should be around 310-315 h.p. to the tires. Pretty nutts for no bolt on's

I'm running 2 tunes though..GM Stage 1 Turbo Upgrade then topped it off with a custom Trifecta tune...haven't had it on the dyno yet...but Vince from Trifecta Performance said it should be around 310-315 h.p. to the tires. Pretty nutts for no bolt on's
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Re: 305 iroc vs 08 srt4 caliber
damn man i wish i had your kinda of atitude when i was building motors and had the cash to do it. hell im surprised my 383 LT1 with a 6 speed and 4.11 gears cutting 1.9 '60s wouldve been quicker then 12.00....... i guess if you built my 383 then i would have been quicker......
best i ever cut with mine was a 12.65 at high 11-s that was a 383 LT1 58mm TB, msd opti, wires, P&P intake to match heads and TB, a set of P&P LT4 heads, LT4 hotcam, running in the 11.8-12 : 1 comp on race fuel, Long tube pacesetter headers full true dual all the way back with dynomax bullets on a nitto DR with 4.11 LSD out back and all i could turn was mid 12s im not the greatest driver by any means i spun a little in 1st but from 2nd,3rd, 4th she pulled all the way through....
like previously stated, you have high hopes man. i hope you get the outcome you want but dont rely on the fact its a god almighty 383 will put you into the 12s
best i ever cut with mine was a 12.65 at high 11-s that was a 383 LT1 58mm TB, msd opti, wires, P&P intake to match heads and TB, a set of P&P LT4 heads, LT4 hotcam, running in the 11.8-12 : 1 comp on race fuel, Long tube pacesetter headers full true dual all the way back with dynomax bullets on a nitto DR with 4.11 LSD out back and all i could turn was mid 12s im not the greatest driver by any means i spun a little in 1st but from 2nd,3rd, 4th she pulled all the way through....
like previously stated, you have high hopes man. i hope you get the outcome you want but dont rely on the fact its a god almighty 383 will put you into the 12s
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From: Northern CT
Car: 1986 Trans am
Engine: 5.3 LM7
Transmission: T56 6 speed
Axle/Gears: Dana 44 w/ 3.55's
Re: 305 iroc vs 08 srt4 caliber
Weight is the enemy.
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From: Mays Landing NJ
Car: 2018 Camaro SS
Engine: LT1 w/Paxton 1500SL
Re: 305 iroc vs 08 srt4 caliber
what do u think im gonna put stock heads and a turd of a fuel injection on a 383 and no i dont have a $hit ton of experence but im not dumb its got a set of sportsman ll heads with a little porting a big single plane intake and a 750 dp and its got rear coilover drag setup with adjustable lca's and torque arm so yea im sure its gonna b under 12's



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Joined: Jun 2009
Posts: 116
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From: Cape May, NJ/North East, MD
Car: 1992 Chevy Camaro
Engine: 350 TBi in the working
Transmission: 700R4 :(
Re: 305 iroc vs 08 srt4 caliber
yea you can only expect to push so much weight so fast. i mean even a 1.9 60 being my BEST ever was babying it. with that car i couldnt go full throttle till about 4k in 2nd gear then i was grabbing 3rd and that pulled me thrugh the rest of the 1/4 if i was on a full 10.5 slick id prolly had killer times but again with the OP id love to see some videos of these runs. i mean a cam only lt1 pulling into the 12s..... idk must be one hell of a driver.
Joined: Sep 2004
Posts: 5,906
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From: Chicagoland Suburbs
Car: 1989 Trans Am GTA
Engine: LT1, AFR 195cc, 231/239 LE cam.
Transmission: M28 T56
Axle/Gears: 3.23 10bolt waiting to explode.
Re: 305 iroc vs 08 srt4 caliber
yea you can only expect to push so much weight so fast. i mean even a 1.9 60 being my BEST ever was babying it. with that car i couldnt go full throttle till about 4k in 2nd gear then i was grabbing 3rd and that pulled me thrugh the rest of the 1/4 if i was on a full 10.5 slick id prolly had killer times but again with the OP id love to see some videos of these runs. i mean a cam only lt1 pulling into the 12s..... idk must be one hell of a driver.
You either can't drive, or you don't have enough tire. Because they should be trapping in the 110 to 115mph range depending on the cam and vehicle weight.
My car is about 3770 with me + tuning crap and it went 13.3 @ nearly 103 in crappy air. This last weekend I got a 1.87 60 foot out of it on old Kuhmo Supra tires with stock suspension. If my trans hadn't been acting crazy on the 2-3 shift I'm sure I would have been a 13.1 or so. Sometimes my trap speeds were down nearly 5mph from the crappy shifting. But the car was coming out of the hole hard with a 1200rpm footbrake launch. This is a stock B-body cammed iron headed LT1 rated at 260hp factory.
You start adding a stall and DRs into the mix and you'd better be in the 12s.




