zaridar

iTrader: (3)

I just got my new streetported engine into my car and am wondering what kind of horsepower ill be getting out of it? I plan on getting RB exhaust and either their holley intake kit or weber? Also ive been thinking about a camden supercharger? Anyone have any Info or knowledge on them?

Oh yeah... I still cant get it to run right... I think the old carb is a POS? I'm not positive.. Ive heard accelerator pump maube or a vacuum leak? Any Ideas?

thanks


Josh

John64

Go to a dyno to find out the power, maybe they can tune it for you too.

t_g_farrell

iTrader: (1)

More than stock, just a guess

John64

^^^ I agree

twinkletoes

iTrader: (17)

+1

gypsyvk

I may be a little bias but I would definately recommend the supercharger if you can afford it. A 5'' Camdem would work well for the streetport and it won't comparmise the drivability of your car. Mine actually had little affect on fuel economy but a very nice affect on power. They also don't require an intercooler for up to about 8 to 10# of boost, they start working at low rpm(about 1500), they will fit completely under the hood(I recommend cutting a scoop in for cooler air or use a street scoop) and best of all...it's a roots type blower and it sounds like it.

kgray

although more expensive than going turbo, the camden does look great for reliable power

84stock

iTrader: (5)

I have a buddy with one on his 12a for years and I have one on my GSL SE. I really like it, throttle response is great and streetability is fantastic. Caution though, if you wanna win races at the track or the dyno a turbo will give better peak hp up top. I am going to turbo my 12a and see both worlds for my self. Don't bother with the 5", ge the 7". I wish now that I had gotten the 9". It is an expensive but rewarding project.

gsterror

The port alone wont get you much in the way of power. There's a thread about that wandering around the fourth page somehwere

Naegleria_Fowleri

There is no telling the power gain because no one knows how big ports are done to the motor other than the person porting the motor. All that should be concerned with the car is how much fun it is to drive, anyway. More power usually means more fun, so just go and have fun with it.

zaridar

iTrader: (3)

hey guys thanks for all the info. I was also wondering about #s of boost on the supercharger? I was reading the4 info and they said only recommemded was 6? otherwise if the compression was too high in your engine it might detonate or whatever? A stock 12a is like 9.4 - 1 compression ratio right? whould a streetported engine be a bit less bacause the port is bigger and therefore sucking in fuel and air longer and therefore less distance to compress the mixture? Or am I just thinking too much and its really an insignificant amount? and if so does this mean i will just have to retard the timing a bit?


appreciate all your help! Ive been gone for a while but now am working on my old 7 again... now a got a lil bit more cash so hopefully i can get some stuff done to her to make her go good

Thanks
Josh

zaridar

iTrader: (3)

If i double post im sorry i have a crappy dial up connection! Thanks for all your help and input guys. I was wondering, if i use the 9 in supercharger like you say 84stock, will i have to retard the timing so my engine doesnt detonate? I was reading on there website that if the compression ration is too hight then 6 psi is all that they recommend? How can i throw 10# of boost or what not without the engine blowing up? Will retarding the timing do the trick and if so how will this affect other thing like drivability or low end power?

Thanks
Josh

zaridar

iTrader: (3)

Hey guys thanks to all of you for your info input and help! However i was wondering i few things? I i get the 9 in supercharger like you say 84stock how will i deal with the problem of compression ratio? on the camden website it says that they only reccomend 6 psi? how could i be throwing in 10#s of boost? I think the compression ration on a stock 12a is like what 9.4-1? so they reccomend only 6psi? is a streetported engines compression ratios different or only slightly and insignificant? Is retarding the timing the only option so i dont blow up my engine? and if so what are the side effect i.e. drivability or power loss at low end or what not? also do they make a 9in supercharger kit for the 12a?

thanks
Josh

84stock

iTrader: (5)

8 lbs of boost is plenty, and on a fresh engine it'll hold up well. I would suggest the 7" for a 12a with the #6 pulley. You'll need a different carb as well. I would suggest about 550 cfm.

zaridar

iTrader: (3)

hey sorry man for all the posts. im at school now on a faster computer and at home it never loads right POS. thanks for the advice. I think im goon go with a supercharger even though everyone but a few say turbo? well see when i get the money for it

thanks

John64

Money? It will cost more then the car for the supercharger.

84stock

iTrader: (5)

So very true......

gsterror

Superchargers give boost as soon as the RPMs start to move. Turbos usually only supply in the 3-75 range.
This is a dual edged blade.
The supercharger, though torquier and better on a road course or autocross, also sucks more gas down. It also changes the car's COG (center of gravity, vertical) ever so slightly, as it's mounted higher up.
The turbo uses up less gas (below three there's no turbo boost, really) and sits lower in the car, therefor it doesn't affect the COG. It offers less torque (usually changing acceleration characteristics greatly) and is a worse choice for road courses and autocross, since the boost cuts in and out too eratically at low revs.

Take it as you will.