My car is plotting against me, wont hit 12's

mob · Apr 27, 2012

So I cant break 12's. I feel like I should just give up. Short of doing something drastic my car is pretty much just stuck in the 13's. My mod list is trickflow intake, TFS stage 1 cam, gt40p heads with upgraded springs, all the bolt on goodies like pullies, 75mm t/b, longtube headers, o/r xpipe, 3.73 gears, with 26x10.5 MT ET Streets in the back. Here is my best time slip I've gotten so far which I pulled tonight. The past like 8 times I've run my car I've gotten 13.06-13.1 with about a 1.74-1.82 60' and clocking about 104mph. I would do pretty damn well in bracket racing cause its consistant I can say that, but I just cant reach that magic number. I mean 13.06 come on! I Went out next run and said ok I am going to get a perfect launch this time and power shift every gear, and no difference. I am about to just throw the nitrous on and call it a day. More of a rant than anything else I guess, I really dont know what else I can do other than buy expensive parts to make more hp. The thing that bothers me though is I saw cars running 12.6@104mph I just didnt see what their 60' was.

Dino Dino Bambino · Apr 28, 2012

You car's hooking up very well and you have enough power to hit high 12's. You could try removing some weight and adding a short throw shifter.

85_SS_302_Coupe · Apr 28, 2012

Definitely something funky going on. Back before i got my 347 short block, i was running a high mile 302 with the same ported '69 351 heads, a Stealth intake, 650 Holley and a X303 cam, plus all the other junk like headers/exhaust/efan/3.73s. I think i was even running a stock ignition back then. I didn't have any problem at all running 12.8 @107 blowing my half bald drag radials to pieces. I never did better than a 1.92 60 foot. My car is about 3100lbs with me in it. I think if i could have left the line harder and ran a lower 60, there's no reason i couldn't have gone 12.5 or better with that setup.

stykthyn · Apr 28, 2012

My car plots against me by bursting into flames...

srtthis · Apr 28, 2012

How high you launching rpm wise? I left around 4500... And went 1.72 but was nose down on the limiter since it wouldn't go in 2nd should have been around 1.69 ish

Boosted92LX · Apr 28, 2012

Man, it's been a really, really long time since I've been down a dragstrip. I'm talking 1992, maybe... and I ran carbed engines. I put a gutted '79 hatch with an iron headed 357w into the high 10's. I never weighed the car, but it was G-U-T-T-E-D. Rolled aluminum dash, cage, plastic buckets, fire ext. period. Weight is the enemy.

Also, tuning the car properly is critical, although I did it with a screwdriver vs a laptop back then, It's gotta be perfect, man. Fuel, timing, everything. Look at parasitic loss. look at tire pressure. Rear suspension setup. Front suspension setup. Shift points. Engine temp. Ice your intake...

It took a lot of tries to get there, and a lot of tearing down and starting from scratch. I would certainly think it could be done with what you have with a little attn to detail.

85_SS_302_Coupe · Apr 28, 2012

fiveohwblow · Apr 28, 2012

85_SS_302_Coupe said:

I called that number and asked for an escort, particularly one in a mustang that has been recently painted.... they said I should see you shortly.... What can I expect?

MY 85 GT · Apr 28, 2012

Whats the car weigh?...My 3780 lb convertible...AOD stock long block with a litttle powerdyne did 13.3@104 with a 1.81 60ft...i know i had 12's in it...just ditched the blower going turbo now...But i would think something is stopping you..weight?....temp,DA..something....

Gearbanger 101 · Apr 28, 2012

My advice....stop counting to three between shifts.

1st...1...2..3..2nd...1...2...3..3rd...1...2...3.....

85_SS_302_Coupe · Apr 28, 2012

fiveohwblow said:
I called that number and asked for an escort, particularly one in a mustang that has been recently painted.... they said I should see you shortly.... What can I expect?

What can you afford?

fiveohwblow · Apr 28, 2012

85_SS_302_Coupe said:
What can you afford?

Enough

mob · Apr 28, 2012

I launched at about 4500 rpm, I feel like my launch is pretty good, I ran a 13.07@104 the first time with a 1.85 60', then I ran a 13.06@104 with 1.79 60'. I dropped my 60' .05 and only gained .01 seconds. At that rate I will have to hit a 1.5 60' just to hit 12's, that doesnt sound right. The launch and the mph are there, something is happening in between and trust me I'm not granny shifting it, I'm doubling clutching like I should (sorry had to throw that in there). The car weighs less than a stock GT , I've got no sway bar, no a/c, no smog stuff, I only weigh 180lb.

tannerc91gt · Apr 28, 2012

sell it, she has the curse!

Chuckman · Apr 29, 2012

youre still doing better than me, ive got a very similar mod list (minus the long-tubes) and im barely out of the 14's. course my fat ass has about 150lbs on you, but i was still hoping for better.

85_SS_302_Coupe · Apr 29, 2012

mob said:
I launched at about 4500 rpm, I feel like my launch is pretty good, I ran a 13.07@104 the first time with a 1.85 60', then I ran a 13.06@104 with 1.79 60'. I dropped my 60' .05 and only gained .01 seconds. At that rate I will have to hit a 1.5 60' just to hit 12's, that doesnt sound right. The launch and the mph are there, something is happening in between and trust me I'm not granny shifting it, I'm doubling clutching like I should (sorry had to throw that in there). The car weighs less than a stock GT , I've got no sway bar, no a/c, no smog stuff, I only weigh 180lb.

Double clutching? What trans are you running man? That's what synchros are for dude. Your right foot doesn't move and all your left food does is blip the clutch while you're stabbing gears like Jason Voorhees. That's why you're not running 12s.

mob · Apr 29, 2012

Chuckman said:
youre still doing better than me, ive got a very similar mod list (minus the long-tubes) and im barely out of the 14's. course my fat ass has about 150lbs on you, but i was still hoping for better.

What kind of tires are you running?

85_SS_302_Coupe said:
Double clutching? What trans are you running man? That's what synchros are for dude. Your right foot doesn't move and all your left food does is blip the clutch while you're stabbing gears like Jason Voorhees. That's why you're not running 12s.

Sorry it was a quote from The Fast and the Furious, it was a joke lol.

bentley429isBAC · Apr 29, 2012

Launch at a higher RPM

fiveohwblow · Apr 29, 2012

85_SS_302_Coupe said:
Double clutching? What trans are you running man? That's what synchros are for dude. Your right foot doesn't move and all your left food does is blip the clutch while you're stabbing gears like Jason Voorhees. That's why you're not running 12s.

^does not own a tv

85_SS_302_Coupe · Apr 29, 2012

mob said:
What kind of tires are you running?

Sorry it was a quote from The Fast and the Furious, it was a joke lol.

fiveohwblow said:
^does not own a tv

Ya know, i even thought of that but man you sounded pretty convincing

My car is plotting against me, wont hit 12's

mob

the guy who hits on his mom

Dino Dino Bambino

85_SS_302_Coupe

it sucks (I know) to be on the receiving end

stykthyn

I want to measure mine. It doesn't look that tall.

srtthis

the guy doing it does every local racers rear end

Boosted92LX

It's only an inch or two. What's the big deal?

85_SS_302_Coupe

it sucks (I know) to be on the receiving end

fiveohwblow

Official Member

MY 85 GT

Gearbanger 101

Straight Outta Locash

85_SS_302_Coupe

it sucks (I know) to be on the receiving end

fiveohwblow

Official Member

mob

the guy who hits on his mom

tannerc91gt

This last 25% is foreign territory at this point

Chuckman

GTFO you fat, heavy bastard

85_SS_302_Coupe

it sucks (I know) to be on the receiving end

mob

the guy who hits on his mom

bentley429isBAC

fiveohwblow

Official Member

85_SS_302_Coupe

it sucks (I know) to be on the receiving end

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