Well, after convincing myslef I REALLY NEED an 8-stack EFI and getting over the sticker shock (just over $5k) I ordered a custom conversion of a mid-generation Halibrand manifold with the splayed inlet tubes. It is a little shorter to the ram tube mount than the Kinsler, which gives me more room to fab/fit a custom carbon fiber integral inlet/air cleaner assy. Throttle bores are 2 1/4" which should be a good compromise between drivability and max power potential. I ordered 36# injectors for a start, should be about right for the "planned" 525 or so horses. The shop will do individual injector lines instead of fuel rails which should add a little more flash to the look.

The system uses an Accell Gen VII DFI, full sequential, with their matching dual trigger distributor and ignition system. I've already got the tuning software on my lap top and it looks pretty capable and easy to use. I deleted the Accel fuel pump. Still trying to decide on the Mallory (easiest to fit), Aeromotive or going all out for a Weldon pump. Either should plumb a little easier than the Accel pump into my already installed -8AN lines. I do need to look into if I'll need to have the tank changed to a bottom feed, or if the pump has enough suction to prime from my top feed if the pump itself is located lower than the fuel tank bottom (Monty etc, any ideas on this one?).

Should be ready around the end of the month .. can't wait to start mocking it up for fit.

-Greg

PS- My new bullet proof Strange 9" rear with a 35 spline locker arrived last night. A real work of art. I'll try to post some update pictures on the project web site this weekend if I can drag the digital camera away from my wife. The axles for the 35 spline setup are HUGE. The guy who setup the gears even signed and dated his work. Nice touch.

 

The intake sounds really cool. How much of a cam do you have in this motor? I have toyed with the idea of fuel injection but because of the low vacuum my motor makes I don't think a fuel injection unit will work very well.

Greg, are you doing the fab work on this car yourself? It sounds like quite a project.

Steve

 

That's going to be a very cool setup when you're done with it. I'm interested to hear what you think of the DFI 7 system.

You can get a preformed sump from Jeg's/Summit, and weld it to the bottom of the tank. That's what I did. I've run it out of the top of the tank, but as you know, electric pumps are more efficient when they are gravity fed and don't have to pull a head of fuel.

Can't wait to see the pics.

 

Wow, that sounds like a seriously nice setup! Please post pics when you can! :D

Cheers,

Tony

 

Sounds :cool:

 

542C2 - I do most of the fab work myself, but I plan to farm out the upholstery and probably the paint. I've done lots of paint before, but the current garage just isn't as nice as my old 3-car with one bay setup as a paint booth. I think you'll find that the aftermarket EFI setups (except Edelbrock who say they can't run big cams) are tailorable enough to run pretty radical cam timing. I'm looking around 240-245@.050 and .630 lift. I will probably run 110* centerlines to help smooth out the idle a bit. I'd give some of the Acell DF-7 or FAST vendors a call and talk to them.

Monty - I've seen the sump kits, but my tank is aluminum and I don't weld aluminum (at least not well enough that I'm willing to do it on MY parts :D ). Since the pump will be below the tank bottom level I don't really see why after the initial prime it would make any difference if it's a sump or a top feed pickup, fuel should still syphon towards the pump in either setup. In my case the lines have to go higher than the tank top to get from the tank to the pump which ever pickup I used (to get up and over the rear axle). There isn't any place to mount the pump behind the rear axle, except possibly to the bottom of the battery tray ... and that just doesn't sound like a good location. Guess I'll run the top feed and see if I have a problem or not.

It is interesting that the boat guys having problems with EFI pumps all have top feed tanks (all boat tanks are) ... but I don't think that is what is causing their problems. At least I sure hope it isn't :) .

-Greg

 

With the FAST or the new DFI 7, you can run any cam you want and still get it to idle nicely.

When I put my first engine in the car, a Superram DFI 383, I used a single Paxton pump (made by Aeromotive) and had it top mounted. I ran it as a top feeder for 2 years and it worked just fine - the only thing I noticed was that it seemed a little louder than the new pump(s) with the sumped tank. But I doubt a little pump noise is going to be a concern with your project ;).