Join Date: Dec 2000
Location: Medford, MA 02155
In the past I've converted several pre '86 EFI cars to a 4 bbl carb. I used the '85 5.0HO carbed distributor and wire in an MSD-6AL ignition box to trigger the distributor. Although, I just picked up an '86 notch that was a converted 4cyl car. The person who did the swap used a. '86-93 TFI distributor. I have not had time to trace the wiring and see how its wired up. The only drawback is no spark advance.
You can get a drop in fuel tank insert. Granitelli makes one or Summit Racing might carry one.
Carbs make more horsepower, EFI makes more touque. I would swap the Performer intake for either a Weiand Stealth or Edlebrock Performer RPM intake. The higher stall converter will flash past 1500 rpms easy, this is were those intakes start building power. A TFS #1 cam works good with ported stock heads and it's powerband is very similar to the two intakes I mentioned.
With ported E7s and basically your proposed combo ( I used a Torker 289 intake) and made 265 rwhp using an AOD for the trans. I still had the AC, PS, smog pump, stock pullies and a stock belt running everything.
I had about $1500 in parts on a stock shortblock. This included the head porting, valvejob, new valves, springs and other related valvetrain parts. It also covered the TFS #1 cam, intake, carb, distributor, MSD 6AL, MSD coil carbed fuel system, headers, H-pipe, catback, gaskets and everything else needed.