need help..what do need to get 300

[EOD AIRFORCE]

Hey everyone. I'm stumped. I got decent amount of money to drop on my 350 in the 79Z with the goal of breaking 300 horses. I thought I had the right setup, but a compcams rep told me it was more like 270-280rwhp. Heres the setup I was gonna get.

Upgraded vortec heads~up to .550 lift
Eddy Performer intake(willing to go up to airgap)
Eddy AVS 650cfm carb
XE 268 compcam(recommended to me by compcam rep)

I currently have headers, true dual exhaust. Th350 tranny. 3.42 gears.
I've read every article in my "vortec searches". Learned alot over the past 2 months, but I seem to have a hole or holes in the equation. Sorry if I sound like I want you guys to do the work,thats not the case it's just that I've seriously read dozens of articles and tons of threads on all these questions and still not sure were the problem is.

Note this is still gonna be a (10-20 miles) daily driver. Don't mind sacrificing fuel mileage, but don't wanna get too crazy. Is this asking for too much? Let me have it fellas, I can handle the truth. j/k But any advice would be appreciated. Thanks

[Xenostalgia]

Get a big ram air setup, if you still have a stock intake you are kinda shooting yourself in the foot. =)

If you already have an aftermarket exhaust start unbolting AC n stuff.

Wiring setup, bigger fuel injectors, bigger carb

[EOD AIRFORCE]

That's not really the path I was looking at going down. A little to over the top for my taste. No a/c, proly should mention I'm in Las Vegas. Trying to keep it more traditonal as opposed to ram-air, nitrous, blowers...Thanks for the reply though.

[Hypsi87]

Originally Posted by Xenostalgia

Get a big ram air setup, if you still have a stock intake you are kinda shooting yourself in the foot. =)

If you already have an aftermarket exhaust start unbolting AC n stuff.

Wiring setup, bigger fuel injectors, bigger carb

unbolting AC won't give you any power increase. All it does is free up some room under the hood and make for a hot car to drive around in.

all I can say is more compression.

[EOD AIRFORCE]

with the vortec heads I was told it would be about 9:1 compression. What do I need and how would I get it..boring it out a little?

[Xenostalgia]

Thx Hypi, I never knew that... =)

Well do you have a factory intake or a aftermarket?

[Hypsi87]

Originally Posted by EOD AIRFORCE

with the vortec heads I was told it would be about 9:1 compression. What do I need and how would I get it..boring it out a little?

dome pistons, smaller combustion chamber heads, thinner gasket.

You have the intake and carb setup for it. what is your cam? What ammount of timing are you running? 9:1 is kind of low. I would look into doing timing accually, you not too far off of 300. hell your could be a bit rich or what not. You have over 300 flywheel HP. Just not at the wheels.

[EOD AIRFORCE]

right now i got a stock, but I'm gonna get a performer or the air gap depending on what everybody recommends.

[Xenostalgia]

Get a nice K&N CAI intake and you should hit 300 with all the headers/exhaust and everything, your car can't get in enough air thru the stock since it is very suffocating. Its like 250-300$ You'll definately see an improvement.

[EOD AIRFORCE]

the cam would be the XE 268,supposedly, (268in 280ex; 224in. and 230ex. @.050; 110 lsa) matched with a 2200 stall. Now by timing you mean adjusting it? Well, is 300rwhp asking for too much?

[Hypsi87]

Originally Posted by EOD AIRFORCE

right now i got a stock, but I'm gonna get a performer or the air gap depending on what everybody recommends.

OHH I thought you already had that. Yea, get that and you will see your 300 WHP.


Xeno. He has a 79Z. the air intake is a huge aircleaner on top of the carburator. I don't think they have a CAI for them. Cowel induction hood would be cool.

[Xenostalgia]

Originally Posted by Hypsi87

OHH I thought you already had that. Yea, get that and you will see your 300 WHP.


Xeno. He has a 79Z. the air intake is a huge aircleaner on top of the carburator. I don't think they have a CAI for them. Cowel induction hood would be cool.

..Slap some PVC and duct tape on it... Voila! Jp, good call Hypsi.

Get a bigger carb. More air in - more hp

Bigger fuel injectors too.

[Hypsi87]

Originally Posted by Xenostalgia

..Slap some PVC and duct tape on it... Voila! Jp, good call Hypsi.

Get a bigger carb. More air in - more hp

Bigger fuel injectors too.

Carbed cars do not have fuel injectors. That is the difference between a throttle body and a carb.

[Xenostalgia]

=\ You are really starting to annoy me with all your 'correct answer' bullshit you know....









jp =)

[Savage Messiah]

Originally Posted by EOD AIRFORCE

Hey everyone. I'm stumped. I got decent amount of money to drop on my 350 in the 79Z with the goal of breaking 300 horses. I thought I had the right setup, but a compcams rep told me it was more like 270-280rwhp. Heres the setup I was gonna get.

Upgraded vortec heads~up to .550 lift
Eddy Performer intake(willing to go up to airgap)
Eddy AVS 650cfm carb
XE 268 compcam(recommended to me by compcam rep)

I currently have headers, true dual exhaust. Th350 tranny. 3.42 gears.
I've read every article in my "vortec searches". Learned alot over the past 2 months, but I seem to have a hole or holes in the equation. Sorry if I sound like I want you guys to do the work,thats not the case it's just that I've seriously read dozens of articles and tons of threads on all these questions and still not sure were the problem is.

Note this is still gonna be a (10-20 miles) daily driver. Don't mind sacrificing fuel mileage, but don't wanna get too crazy. Is this asking for too much? Let me have it fellas, I can handle the truth. j/k But any advice would be appreciated. Thanks

Xeno...