Thread: Dual Quad Sequential EFI

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Gotta lot going on right now, but I had to post this.

I've never really liked the look of the LS engine that I'm using in my build (or LS engines in general for that matter). I appreciate the technical stuff inside and they make lots of easy horsepower, but they are pretty ugly on the outside which is why even the factory usually puts covers on them. I've been pondering for some time how to make mine look more appealing to the old school traditionalist in me.

When this setup came up for sale on another website, I just couldn't resist. Now I'm normally "Mr. Practical" when it comes to street engines, but this thing just looks cool(to me at least).



It's a dual plane intake so low end torque should still be good. It has port fuel injectors so I also get to keep the sequential injection.

The throttle bodies are billet with progressive secondary linkage like a traditional 4 barrel.

The engine looked a ton better the instant I dropped it on. Looks like something that should be on a 60's era Cobraesque sports car like the Healey I'm building.

The only downside is that the throttle bodies flow an insane amount of air for a 350 CI engine. 1000 cfm each! I'll most likely have to limit airflow to make it practical for everyday driving and I'll most likely go with a progressive linkage between the Tb's like a traditional 2x4 carb setup, too. It's set up for simultaneous opening now and that will most likely make the throttle response a little touchy.

I'm thinking about converting a set of finned big block Chevy valve covers into coil covers to hide the ugly exposed coils. Add a big oval dual quad air cleaner and it should look reasonably traditional, while still keeping some of the high tech guts.