Thread: BG 6 Shooter vs Edelbrock Dual Quad?

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I think we are only hearing part of this story.
I have a customer that has a full -on 565 pro street BBC with a very stout mech. roller cam 275 at .050.
He runs a Force fuel injection unit and the car will start very well and has a fair idle at 1,250 rpm's.
He switched from a flowed 1,050 dominator to the Force fuel injection and picked up a lower idle speed and better driveabilty along with better throttle responce.

I think I understand 100 percent what Troy is talking about with the cam situation. When we build a street driven hot rod, sometimes performance takes a backseat to image. If we were building these things to run down the quarter, we would go for as much efficiency as possible, but when we build them for the street, we give up some of that for the red light idle and cool factor.

The 460 Ford I will use for a future project has a roller cam that comes in at 4500, and needs a convertor that is extremely loose. Crane cams told me this cam should never be on the street, but that is where it will probably end up. I know all the things about how a smaller cam would be more sensible, and probably faster, but I am willing to sacrifice that for the idle and image I am after. Besides, a race built 460 will give me more than enough HP regardless of the efficiency level.

We all do this, and put stuff on our rods that compromise HP for image, otherwise we would be building strictly race engines. Who was it, Hernando who said "it is better to look good than to feel good."


Don

In theory you can get any progammable EFI system to do exacty what it needs to from cold start on up. If I was that PO'ed at my EFI and my car would pass inspection without it then maybe I would dump the EFI and run a Speed Demon from BG. Not likely though, I would probably fix the EFI.

Kitz

I do have a serious question here casue i have been thinking about EFI.
What do u mean u had chips burnt did u not program this yourself or get a programable ecm. cause my question is if u had a chip burnt that makes me assume that u never brought the vehicle down to a chassis dyno where they will for some coin tune your ecm for you. and you had it burnt also makes me assume that u called some one with your engine specs and then they mail the chip to you. which my question is how can someone do something when they are not tuning it for all situations full/part throttle and cruising speeds. just wondering cause i'd like to EFI someday but i read stuff like this and i get shy'd away cause i dont wanna spend money on something that i am not gonna like


hope this all makes sense

pre burnt chips if done right for your setup will work close to right, and depending on the system, you'll have active fuel trim, which will run off the tables in open loop til she warms up and then try and base the fuel trim close to the table but also run 14.7:1 AF ratio.... the problem is on the systems that are burnt to run stricktly off the table in open loop, they dont accomadate the fact that engines built 500 times with the same parts aren't going to run exactly the same, plus the weather and altitude can change effects too..... i reccomend if you want to do EFI make sure your system is going to allow closed loop with fuel trim capabilities..... and reprogrammable fuel tables... and its even better if you can use a fully electronic ignition so the computer can control advance as well.... maybe even a distributorless ignition.... thats why i'm thinking of building my own coil on plug system.... i'd reccomend maybe taking an ASE engine performance levels 1 and 2 classes at a local college so you can really get the theory