This is my 308 red using the pre-pollution manifold.
I was keen to do this conversion for the sake of seeing if it would run,then run ok,and be pretty much driveable.
Everyone told me to just bang on an VN EFI top end set-up,but i wanted to keep everything pretty much HJish.
Also the hassle of an exhaust and cam change etc etc...didn't appeal to me(been there done that)
The added incentive was to "learn"to TIG weld.I lashed out on one of those china Ebay ones and to my surprise it works quite well.Welding a 30+ year old inlet manifold sure was a mongrel.So much crap would come out of the aluminium.....i was beginning to have my doubts about going ahead with it.
Persistance sure helps and all went well.
I used 4 x VP V6 fuel rails with the 3rd injector blanked off.The plenum is is made of aluminium checker plate and just made to fit in the space allowed.No mathematics or "high level" white coat theory was used in the design.It is bolted to an Holley spreadbore adapter plate onto the holden 4brl manifold.
Brackets were made to suit my standard V8 acc cable and the TH700R4 TV cable.
I used a VN V6 wiring loom and disected it to add the V8 ignition module and modified the rest of the loom to suit my engine bay.All the rest of the sensors were off VN V6/8 "borrowed"
from the wreckers.I made sure in the event of a breakdown or mishap...ALL parts were standard off the shelf holden parts,with the exception of the fuel rail 3 injector holes.
Vn V8 throttle body is used and VT and VN intake ducting with VN airbox.
VL external fuel pump was used,but after killing 2 of them and bad fuel surge even above 1/4 tank...i gave up and cut the top out of another HJ tank i had and fitted a VN swirl pot and internal pump and it's been as good as gold since that day.
A few months later i added the rest of my old Impco LPG set-up but adapted a 225 mixer setup with O2 controller as well.
The VN cruise control set up was added later down the track.
The biggest pain in the ass has been the VSS set-up to work/last long enough to not destroy itself.I used a well known companies VSS - TH400/GTS cable conversion twice that lasted about a month before giving up on that and adapting a workmates "t " drive set-up that he made years ago. A modified WB cruise cable went from trans drive to the centre of the "t" drive.One end had the VN VSS drive and the other end had the standard TH400 cable going back to the GTS dash speedo.As the VN VSS uses 10 pulses against the aftermarket 2 pulse set up,I used the guts of a VN speedo head hidden under my console and wired it up from the VSS to VN speedo to enable the "devide x 5" circuit back to the 808 ECU and control my lock up converter.
I have since changed to a VR manual ECU for 8196 baud rate and real time tuning/data logging using EFI-Live and an ostrich2 emulator. A W/Band is also used to keep it under control.
From first fire up (about 18 months ago) to now,it's been flawless (apart from fuel pump issues).It fires up on about half starter crank everytime,idles well and drives well.It doesn't have the grunt of a VN top-end conversion,but it sure is stronger than the ex-carb set-up.
It was alot of work but i enjoyed the challenge and learning along the way.If i ever want to sell the car or bring it back to original,all it takes is a manifold change and fuel line mods.The original wiring is still there.
With the help of delcowizzid and VL400 on a previous site their knowledge has made this easier.
cheers...mario
