I was planning on getting the Edlebrock TBI performer Intake Manifold for my lo3. But then I relized that the bores are exactly the same size as stock.

So what's the point? If the bores are the same size how could it possibly improve performance?

 

Well the plenum size is larger and so are the ports. it is really a good intake minus the size of the inlet bores. I have bored mine to 2" to remedy that though. Check out the sticky at the top for links. I am a big fan of this intake.

 

ill actually be installing my edelbrock performer tbi intake tuesday and bringing it the track on wednesday. Ill let you guys know i do.

 

would their be a problem with purchasing the 2.0" bored version and installing the 1 and 11/16" inch bored TBI on it?

 

very doubtful. I have no experience with these intakes, but they should fit fine. And the bolt holes are identical for both the L0x throttle body and the 454/holley throttle body.

 

Becuase the inlet bores are different. If you use an unmodified edelrock intake and slap a 2" bore unit on it you will have a lip that surounds the intake. That lip will not help air flow that much and can cuase a tremendous amout of turbulence into the incomming air. I bored my edelbrock unit to 2" to fix this probelm so that when the day comes that I use a 2" TBI unit I will be all set.

 

so i should stick with the 1 11/16" for now, and when i get a 454, then i can just bore it to 2"?

 

Well it doesn't matter. If you have the intake off of the car you may want to look into getting it bored. Then in the future it wil be all ready to go without you having to take it back off. It is really up to you and how soon you plan on going with the 454. Holley makes a TBI inktake that already has 2" bores. You may want to look into that.

 

well thats what i was originally asking, would it be ok to have a 2" bored intake with only the 1, 11/16" TBI on it?

 

Itll be fine...

 

My bad I missread your post. Yes it will be okay and that I what I have done at this time.

 

What ever happened? Did you notice an improvement?

 

does the holley fit GM linkage? i assume it is designed for their 670 TBI projection system.

 

teh holley is designed as a direct bolt on, everything will line up jsut like stock

later
tim

 

i also wanna know how it performed at the track.

 

i could feel a slight different and it definately has better throttle response but i think i am running lean now. I recently had to get smogged and my CO readings were 0.00% which means im probably running alittle lean and that was with 2* timing advance and 87 octane, now im running 6* of timing and 91 octane and have no problems with knock. I have a tbichips stage 1 chip in there now and i might put in my stage 2 chip with 0* timing and see how it runs. This weekend im going to get my laptop setup with WinALDL, then get one of those ebay ALDL cables and start dagalogging hopefully within the next 2 weeks.

 

did you get any better times?

 

How long does it take to install? (including taking everything off and putting everything back on 100%)

 

removing and replacing the intake is the eazy part, the part that took me the longest was removing the old intake gasket/sealant from the heads.

I did not run any better times, i had terrible traction (probably because of the addition of the 2400 stall converter) and when i was halfway home my car starting running like crap and i found out that the MAP vacuum hose was melting on the intake EGR base, so im sure my MAP readings were also way off during my quarter mile runs. My 60' times were about 4 tenths slower than normal and i was running about 8 tenths slower in the quarter. Ill try to get new track times memorial day weekend. This weekend i plan on checking out my pinion angle and setting it to about -1*. Since replacing the tranny i havent checked the angle and believe that it might be off. Also it is time to lube my LCAs and panhard rod, as well as the torque arm bushing. I also plan on installing that Stage II chip. Ill try to keep you guys updated.

 

I have heard the opposite from a few other members.

 

I have heard that there are some issues with the Holley bolting up, but the Edelbrock is a DIRECT replacement.

 

I've noticed many people giving this intake a bad rap in the past due to the 1 11/16" bores. The one I have has the torque tubes that you drop into the tubes to improve low to midrange torque. These measured the OE 1 11/16" which leads me to think that the bores in my intake are almost 2" if not that. I've also noticed that the version produced today does not have these tubes and is the OE 1 11/16" diameter bore. Don't know why Edelbrock dropped this feature as you could tell a difference between when the tubes were in and out. I am running without the tubes which seems to allow better performance in the midrange for my car.

 

Which ALDL cable off of Ebay?? I need one as well.

 

You have to convert to an older style EGR or use a high spacer to clear the re-use of your existing valve. The Edelbrock intake is the only true 100%(zero fab work) bolt on TBI intake. The only modification needed is a little massaging of the fuel lines to reach properly. I wouldn't even consider that modifying since you can tug hard enough for them to reach before you get out the pliers.

 

just type in "aldl cable" on ebay, im think im going to get the one from Superior for $34.99 + shipping.

 

I had this intake back in my TBI days. It was ok. I think the holley one is much better thought. Bigger, beefier, and has 2'' bores already. I hear you have to run a spacer to be able to use a EGR valve but I don't think thats a big deal. But I noticed alittle more topend with that intake over stock.