Thread: Dual Quad Sequential EFI

Tweet

The "repair" work took several hours and then I could finally get to work making it fit the car.

The filter base has a couple of carb adapters that can be moved to fit various carb spacing. They are tall enough to clear the choke horn on a Holley carb. I was able to cut about 3/4" off the height since the throttle bodies are flat on top. I dropped the base down to where I had just a little clearance for the throttle arm to swing.

And this is what it looks like on the engine (finally!).



This is the clearance to the hood. At this point it's only about 1/4". But a miss is as good as a mile! Actually, I plan to try and get just a little more, but at least the hood does close.



As I said before, my plan is to pair this with a modified set of finned big block Chevy valve covers for coil covers. I'm leaning toward black wrinkle with polished or machined fin tops.

I figure for me to do that work in my Clausing 8520, I'd have to work on it in quadrants. 8-(

But I would've got it done faster than a flap wheel!! LOL.. We all do what we can with what we have! Good job!

Thanks 34.

Just so everyone knows that everything doesn't always go perfect for me. I actually lined the top up this morning and had it tied down. Everything looked good until I tried to cycle the table to the full length of the part. I had tied it down outside of the table travel limit switches! I filled the shop with some colorful adjectives directed at myself and had to move everything and start over. Oh well, that's how it goes sometimes.

I should add that I called Speedway about the crushed filter. They agreed that it was not in the description and cut me a lot of slack on a replacement filter. I would have felt better if they had comped it, but at least I didn't have to pay full price.

That looks great!!!!

Nice going on the hood clearance....A little more will be nice, but like you said at least it closes



.

Looks great, your right, dual quads make an ugly LS a lot more attractive .

I wish I could have chimed in sooner.

A quarter inch clearance means only 1/8" allowance for motor mount flex!

Thanks everyone. I've done about all I can with this right now. Next will most likely be plumbing and throttle linkage, but I have other things that need doing.

53 - I've realized that some of the things that were designed into the LS to make it fit in such a wide range applications are the things that make it look odd to traditionalists. The squat intake on the car engines makes the engine bay in an older car look like something is missing. Unfortunately, changing out the stock intake for a carb or TB EFI definitely takes the LS out of the affordable swap category.

The round end valve covers also look strange to folks that grew up with rectangular covers, but how many times have you seen an instance where the square corners on older covers interfered with an engine swap. We won't even talk about the all the coils on the valve covers.

Firebird - Yeah, I thought the same thing. I could see breaking the air cleaner base or tweaking the hood as a possibility if I leave it where it is. I've gone about far as I can with air cleaner mods. Looks like I'll be dropping the motor mounts a little to get some more. Hopefully, that won't cause issues with the exhaust.

Nice! You're using some big boy tools; wish I had one of those!

Falconvan - That CNC mill sort of found me. I had an old manual Bridgeport that served me well and really wasn't looking for anything else. An old school buddy casually asked me if I needed a mill. His boss had bought out the entire machine shop at a community college and cherry picked the tools that he wanted. The rest got shoved in a corner for about 3 years before he decided to sell them. When I went to look at it, it was literally covered with about a quarter inch of oil and dirt and had some broken parts on the control board.

I made him a very low ball offer based on it's filthy condition and the fact that I couldn't hear it run. He turned me down on the spot, but took my phone number. About a week later, he calls and tells me to come get it for my offer. I ruined 2 sets of clothes cleaning it up and spent about $400 on repair parts and manuals, but it fired up and works well.

Now, I'm an old handle turner (manual machinist) and I've been slowly coming around to the CNC part of it. It also has full manual handles like a conventional Bridgeport and I find myself using them a lot. Old habits die hard, but if the CNC part dies, I will try to find a way to repair it. I've grown used to what it does even though I only use about 10% of what it is capable of.

Awesome thread glad you linked it !

Mike, Just found this thread, I love it. I love the old school look, maybe because I'm old.

I got my mill and lathe about 12-14 years ago. How did we ever get along without them, although, mine are all manual.


Jack.

Originally Posted by Jack F

How did we ever get along without them

I was without machining capability for several years before I got a few basic machines. It sure makes things a lot easier.

I'm glad you're enjoying the build.