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Old Feb 14th, 18, 06:39 PM   #1 (permalink)
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What can make my car go high 12ís

I have a 1979 camaro that has a 350 with a turbo 350 trans... the trans is going out to Gerb rebuilt back to stock with a shift kit I have a converter little higher than stock I have 3.73 gears with a mini spoil... the motor has a edelbrock dual plane intake a 650 holly carb headers and 65cc heads the motors out and I wanna just throw a cam in what is your guys thoughts what should I do trying to have a low budget
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Old Feb 14th, 18, 07:05 PM   #2 (permalink)
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Re: What can make my car go high 12ís

Nitrous
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Old Feb 15th, 18, 02:38 AM   #3 (permalink)
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Re: What can make my car go high 12ís

What does it run now ?
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Old Feb 15th, 18, 08:02 AM   #4 (permalink)
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Re: What can make my car go high 12ís

Physics shows f=ma

If you want more a )lower E.T.'s) then either lower your m (weight of car), or increase f (your horsepower).

Simple.

An engineering question is can you get the power you make to the ground to accelerate your car? That means you need traction (bigger stickier tires) and a functional suspension in addition to more power.

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Old Feb 15th, 18, 08:26 AM   #5 (permalink)
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Re: What can make my car go high 12ís

Youíll need approximately 400 hp to the rear wheels with some drag radials
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Old Feb 15th, 18, 10:09 AM   #6 (permalink)
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Re: What can make my car go high 12ís

horse power and speed aint cheap
what's your budget?
what heads do you have now?
do you know the compression?
what cam you going to use?
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Old Feb 15th, 18, 12:57 PM   #7 (permalink)
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Re: What can make my car go high 12ís

As suggested by Dave, cheap power gain is lost weight.
Every 100 lbs lost is basically 0.1 second gain.
Alum heads, for less weight, heads are horsrepower, less tire contact , read as less friction.
Synthetic fluids have less friction,
The list is endless.
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Old Feb 15th, 18, 02:04 PM   #8 (permalink)
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Re: What can make my car go high 12ís

Traction/suspension would definitely need attention to get to 12 sec I would think.

I have the HP and the weight to get there, I just don't have the tire for anything but a real good smoke show.
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Old Feb 15th, 18, 04:04 PM   #9 (permalink)
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Re: What can make my car go high 12ís

As stated - NOS. Lots of it.

Suspension will be fine.
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Old Feb 15th, 18, 04:37 PM   #10 (permalink)
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Re: What can make my car go high 12ís

Without knowing where you're at ET/MPH right now, very hard to say what you need to do/change.
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Old Feb 15th, 18, 07:42 PM   #11 (permalink)
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Re: What can make my car go high 12ís

Quote:
Originally Posted by Vega$69 View Post
Youíll need approximately 400 hp to the rear wheels with some drag radials
Dyno numbers are a terrible way to judge how quick a car is. My car ran 11.20's at 120 in a 3,400 pound car. It only made 347RWHP on a Mustang dyno and 382RWHP on a Dynojet. And it did not leave hard. The best 60 foot was 1.58 on the footbrake.
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Old Feb 15th, 18, 08:51 PM   #12 (permalink)
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Re: What can make my car go high 12ís

A 1.58 60í is great. And yes many other factors. If you have a 300 hp crank motor youíre not gonna see a 12.xxx
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Old Feb 16th, 18, 02:46 AM   #13 (permalink)
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Re: What can make my car go high 12ís

350HP @ 3450# should get you into the 12.8-.9s with all things being perfect. (sea level or lower air, correct stall, correct gears, shifted perfect, ETC)

Dynos, I don't trust....math I do.
11.20's @ 3450# is approx 400 RWHP +/-.
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Old Feb 18th, 18, 05:42 AM   #14 (permalink)
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Re: What can make my car go high 12ís

Not sure the weight on my 67 but if I had to guess prob around 3000
or so my 355 with dart pro 1 heads and lunati .517 .543 cam with stock crank and flat top pistons did 11.76 @ 116mph with 1.67 60' rear is 3.73 gear with turbo 350 trans. Was hoping to get into 11.50's but that didn't happen
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67 RS 355sbc 11.76et @ 116mph 1.67 60' Deluxe Parchment interior
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Old Feb 18th, 18, 05:20 PM   #15 (permalink)
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Re: What can make my car go high 12ís

Quote:
Originally Posted by Bad67355 View Post
Not sure the weight on my 67 but if I had to guess prob around 3000
or so my 355 with dart pro 1 heads and lunati .517 .543 cam with stock crank and flat top pistons did 11.76 @ 116mph with 1.67 60' rear is 3.73 gear with turbo 350 trans. Was hoping to get into 11.50's but that didn't happen
11.76 @ 116 still has .4 left in it.
My car is all steel except hood and without me is 3200-3250#

So you're approximately 375 RWHP.
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