Removed and washed down .

My Edlebrock Holden performer manifold ,Once off the car.The EFI planning and injector placement spacing can be started.

Donor Mustang manifold

This is the 1986 5.0 HO inlet I used as a donor for the rails with onboard pressure regulator and injectors.
Having steel rails mean't I could remove the injector bungs and relocate them to suit my 308's port pattern.

solids all in place and braced up

I brought some solid alloy rod and shaped eight peices to match the contours of the sloping top of the intake runners .I decided to go straight down as it was easier to mount injectors and rails. Once I had 8 little numbered alloy solid wedges ,I made a brace to hold them all to the manifold steady as they were welded in place.

Back from the welder and the brace off

Once back from the welders off came the brace and away to the Engineer for some mill work. Using the Mustang donor as a template we could find the centres and mill out to match the injectors .

milled and ready to go

Once the milling was done a big sandblast and a wash ,making sure there are no sharp edges were the injectors go in ,And now to modify the Mustang rails to match the Holden pattern

Holley body cable side view

Now time to gut out the Holley and seal up the gallerys ,remove those venturi bits and the choke plate and linkages .Remove the valve bodys and mount a throttle position sensor to the primary shaft .Also I fitted a air temperature sensor to the factory air cleaner snout .

With the extra hardware sitting on.

Time to fit up the modded rails check it all fits before installation .I removed the injector cups on the Mustang rails patched the holes and rewelded them to match the red holdens pattern and drilled through the rail again ,clean, pressure test and polish :-)

finished spacer

To get a factory air cleaner to fit I had to make an alloy spacer so it would sit above the fuel rails .

Plumbing sorted time to wire

Check out the groovy brass pipe I used to curve around the carby. I had always had an issue after I had replaced the factory swollen heater pipe.Its a fairly sharp bend It needs to perform .This also worked well to avoid the auto Trans dipstick pipe at the firewall end !