Quote: Originally Posted by slk-gtr you will have to change the dissy to as the efi ones are differant to usual electronic ones..... other than that its fairly simple you will need to get another fuel pump as carbys run way less fuel preasure than efi ones...if you car has a vn-vr turbo 700 you wil not need a computer to run the box as i think vs onwards is a computersied box... as for the come manifolds they are **** compared to the flowcraft ones and ae the are the same price... however the carby will always make more power as the fuel speed is much greater, as it get pumped from much higher up in the manifold unike at the bottom of the runners with fuel injected cars.... it would be worse to have fuel pumped higher in the manifold as it has more distance to travel and has more time to fall out of the air coming in. there is a reason that all the big hp manifolds use straightish runners it to get the fuel as close to the cylinder as possible. personally i would leave it injected wat sort of car is it in ? and a carby might make more peak power but will be nowhere the power out put of a efi across the range. efi is pretty much infinitely adjustable and adjusts itself to best suit conditions eg 1/4 1/2 and wot and also the fuel speed would be greater out of an injector as they run under way more pressure than simply air speed pulling fuel through a hole.

Thank god someone cleared that up, what a load of crap. Dizzy wise you will need the factory HEI electronic one, i think they came out on the blue motors in the VH and the black motors in the VK/VL cheers darren

why would you run a 750 holley on a standard 304? before you get into this stupid idea, do some research..... a dyno run on a carby car costs the same as it does on an efi car to tune it...

Quote: Originally Posted by NIX-3LT my mates got a a 304 with a carb just changed it over from injection he never touched the dizzy ???? why do u have to change it guys ??? EFI distributor wont work as it uses the crank angle sensor to guage when to fire. You either need a VK / VL HEI one or a special box that tells the EFI dizzy when to spark. WILL NOT work any other way!

Quote: Originally Posted by NIX-3LT i dont know guys but i asked him what ignition he is running the other day he said the stock stuff that was already on the car ?? who knows thanx for the input ELA-RE just going on what he said ??? Yea no worries man, he must of been mistaken. He most probably has an electronic distributor out of the earlier commodores.

just wondering can the edelbrock performer manifold be used with the vn heads

nah they only made it for carby heads, theres no manifold from edelbrock that works for vn heads

Quote: Originally Posted by TWO89 EFI distributor wont work as it uses the crank angle sensor to guage when to fire. You either need a VK / VL HEI one or a special box that tells the EFI dizzy when to spark. WILL NOT work any other way! Actually it will work, but you will have locked ignition timing. This is totally fine in a race/auto application, but not much good for a manual on the street. The reason it will work is it has a 3 wire Hall Effect sensor. Supply it key-on power through a 5k resistor, run the factory ballast resistor wire to the signal wire, and the other wire to earth. Go the carby setup! 6 (Large).JPG (http://www.calaisturbo.com.au/attachment.php?attachmentid=16069&d=1166621316) It would cost about $10K to achieve the same power output that this $2.5K setup does! Driveability is overrated Some original photos have not been recovered yet.

ignoring drivability, a massive advantage efi 8's had is the heads which flow a hell of a lot more from factory than the carby versions... you would need to spend a substantial amount on head work just to get the carby heads to come near the efi versions, which can be bought for less than $400 from a wreckers...

Quote: Originally Posted by Sinister ignoring drivability, a massive advantage efi 8's had is the heads which flow a hell of a lot more from factory than the carby versions... you would need to spend a substantial amount on head work just to get the carby heads to come near the efi versions, which can be bought for less than $400 from a wreckers... Spot on my friend! Efi heads plus single plane hi-rise manifold plus agricultural holley carb = lots of horsepower for not a lot of dough!!! Some original photos have not been recovered yet.

Quote: Originally Posted by mild25/30 Spot on my friend! Efi heads plus single plane hi-rise manifold plus agricultural holley carb = lots of horsepower for not a lot of dough!!! Yes, this is the type of thing i'm interested in doing. Some original photos have not been recovered yet.

hrmmmm.... an interesting point Some original photos have not been recovered yet.

do this full time call me on [phone removed] for advice....

Ok guys got it done installed injected 5litre out of a vs maloo ute first things first dont try this unless uve got some cash or good mates who can parts. takes 2-3 days install and setup. replaced trimatic box with turbo 350 removed injection from engine and had to replace dizzy with a vk-vl hei 308 distributor dont bother with vh distributor as it did not work. used redline single plane manifold hi-winder, and used 4 barrel carby off my 253 blue engine had to install mechanical fuel pump bit of fun as i had to change the timing case off my vh 253 as the vs does not allow for mech fuel pump and also install a spindle type thing to timing gear so that it would pump the mech fuel pump not to hard engine is running fine now. only problems i have left is the kickdown on the turbo 350 and speedo cable as it was trimatic other than that everything is fine. it cost me approx $2000 to do this but it was all worth it as it goes harder now with carby as when it was injected will be putting on dyno so i will let you know and will be taking pictures and posting on myspace. my profile is vh304 if anybody wants to know but for now im going to enjoy the power and try not to lose my license.

Good stuff mate! But yeah... Watch the right foot, Mr Plod will still welcome you as a late chrissy present! Some original photos have not been recovered yet.

Quote: Originally Posted by vh304 Ok guys got it done installed injected 5litre out of a vs maloo ute first things first dont try this unless uve got some cash or good mates who can parts. takes 2-3 days install and setup. replaced trimatic box with turbo 350 removed injection from engine and had to replace dizzy with a vk-vl hei 308 distributor dont bother with vh distributor as it did not work. used redline single plane manifold hi-winder, and used 4 barrel carby off my 253 blue engine had to install mechanical fuel pump bit of fun as i had to change the timing case off my vh 253 as the vs does not allow for mech fuel pump and also install a spindle type thing to timing gear so that it would pump the mech fuel pump not to hard engine is running fine now. only problems i have left is the kickdown on the turbo 350 and speedo cable as it was trimatic other than that everything is fine. it cost me approx $2000 to do this but it was all worth it as it goes harder now with carby as when it was injected will be putting on dyno so i will let you know and will be taking pictures and posting on myspace. my profile is vh304 if anybody wants to know but for now im going to enjoy the power and try not to lose my license. Like I said "Been a long time since Top Fuel, Top Alcohol, Top Doorslammer ect ect have used carbie/s. Even Pro Comp are running forms of EFI now." And V8 Supercar teams would be laughing at you. But as long as your happy in the decision. I personal would not recommend this, especially at the cost of fuel these days.

did you read what he wrote??How bout the bit where he says it goes harder than it did when injected??who gives a **** about economy,you should'nt be modifying cars if your worried about economy.Good on ya vh304,have fun with it.

Quote: Originally Posted by VLT_RB30 Like I said "Been a long time since Top Fuel, Top Alcohol, Top Doorslammer ect ect have used carbie/s. Even Pro Comp are running forms of EFI now." And V8 Supercar teams would be laughing at you. Yep read that bit. You guys are on another planet, no dought about it..