building 12 sec street

I am looking to build a 12 second driver camro for the summer. right now I have a healthy 350 ci with, 3.08 gears posi ,and a borg worn 4spd, with a hurst comp plus shifter, and a k$n filter 2 1/4 dia exhaust and headers.

I was just wondering wether I could cam it ,sroke IT<400 chev crank> put in pistons ,intake and carb then a supercharger or turbo and would that get me into the 12's with a daily driver potential.I am also looking for a set of 4.10's

if there is a hole in my thinking point it out i am fairly fresh in this game.

Give us some kind of a budget to work with and an idea of what you can do yourself vs. hiring out. What year and model car are you going to be building?

12 sec is a very modest goal when you are talking forced induction :D

Rich Krause

like rich sid, how much money do you have. I think you would actually have trouble building a 12sec FI motor.. it would go 11s or faster too easily ;)

Originally posted by JordonMusser
like rich sid, how much money do you have. I think you would actually have trouble building a 12sec FI motor.. it would go 11s or faster too easily ;)

Nah, just run on radial tires. :D

My LT1 w/ just the 8# Procharger went bottom 12s on an ET Street and modest suspension mods. Not too hard really.

12's is a pretty modest goal.

Hell, with my last car, I ran 11.96 with an 8.4/1 compression 350, hydraulic cam, full exhaust, full weight, A/C, cruise, tilt, etc. . . without a supercharger.

If all you want is 12's, then I'd do a 10/1 compression 350 with Vortec heads and a XE274 cam (230/238). Make sure to machine the heads for the extra lift and install valve springs with at least 120# seat pressure. Set the timing at 30 degrees as these heads make less power with alot of timing. Use a Performer RPM Air Gap intake and a 750 double pumper carb. For exhaust, use Hooker Super Competition headers, dual 2 1/2" pipes with Dynomax Super Turbo mufflers.

This would make a very low-maintenance, pump gas, low cost motor that would make about 420 - 450 hp at the crank.

In a 3500 lb car, you could expect 112 - 114 mph in the quarter, which equates to 11.90 - 12.70, depending on 60' time.

If your goals don't require it, there is no reason to add the cost, complication, and decrease in reliability caused by a supercharger.

Mike

I will be putting in at most 10 thousand a year.
My car is a 81 z28, and if i can go faster for around the same price plz tell me.
Why is forced induction unreliable I was under the illusion it was a sound upgrade.
I also get 50 % off at lordco if that helps any as far as prices go.

The supercharger adds a couple more sets of bearings, gears, and another belt, all of which can fail.

Also, detonation is more likely with boost. Detonation will kill a set of pistons quickly.

High cylinder pressure causes the rings to wear out quicker.

Obviously, based on OEM superchargers (like my Ford Lightning), they can be reliable if designed right. But, as a rule of thumb, more power = lower reliability and more parts = more parts to break.

Mike

hell, we're looking right now at running low, and i mean low elevens and possibly even high 10s with our turbo kit and exhaust. we should be right at about 500 rwhp, and that should net you a low eleven with some sticky tires. if you want to go faster than that you start getting into the exponential curve of power/traction. shoot me an e-mail if you want to discuss anything further.

thanks

david

Blown- what does your car run now? Out of curiousity. Any pics? :)

my car has not seen the 1/4 mile, but I am guessing with me driving it high 14's low 15's <I have only be driving 2 years>.
Would I be able to get prices off you guy's plz .

BTW It HAS to be reliable for at least a 2 yrs when I rebuild next.