vt v6 to 304 v8 conversion

[CM99VT]

well as the name implies the v6 is dead and i aint putting another 1 in lol will be doing this fairly slow i have the k frame in and just about the whole front suspension is new

picking up a motor for it next week do some slight work then get ready to put it in.

some things to be done still

20s
bigger brakes
vz gaurds new lsd diff in the 3.46 area
worked auto
extractors

here are some pics of the car before and some of the work

thats all i can be bothered writing at the moment let me know what you think everyone.

[CM99VT]

well finally got new motor doesnt seem to bad for 800. apparently it has a "stage 1" cam ported and polished heads and a remapped computer.. anybody got some good tips for getting it to up and go a bit quicker without busting the bank

[VrWagz1]

If your doing exhaust and get a cold air intake, small cam and a tune then theres not alot left to do. Bang it in and enjoy. Keep us all updated as you go and take heaps of pics. A how-to would be good if you got the time to do it.

[CM99VT]

well finaly just about finished the motor only hunting around for little parts... heres a pic of what it looks like now much better than what it did

[CHEETR]

dude, i don't know if you are aware, but that motor is a VN-VS 5ltr with a vt cover and shroud.

vn-vs motor runs a hyrolic cam and no maf sensor, with a few other changes, the vs series 3 motor and vt runs a hydrolic cam and maf sensor.

running a hydrolic cam motor in a vt is illegal due to emmisions and RTA pick this up via the engine number.

if you do need any assistance throughout the conversion, i have converted my vt v6 to a 5ltr and an LS1 as well done in my garage, so i'd be happy to help out.

but i highly suggest not to install that motor.

i can tell that is not a vt 5ltr as it is missing a vaccum line from the throttle body, vt ran 2 extra vaccum lines, its also running a vn-vs alternator and pulley setup.
if it was a vt motor, i highly doubt someone would go to the effort of replacing a throttle body and all the pulleys and alternator with a older generation motor.

if you need a hand verifying the motor, post up the engine number and i'll be able to tell you whether its a hydrolic motor or a roller cam motor.

[CM99VT]

dude, i don't know if you are aware, but that motor is a VN-VS 5ltr with a vt cover and shroud.

vn-vs motor runs a hyrolic cam and no maf sensor, with a few other changes, the vs series 3 motor and vt runs a hydrolic cam and maf sensor.

running a hydrolic cam motor in a vt is illegal due to emmisions and RTA pick this up via the engine number.

if you do need any assistance throughout the conversion, i have converted my vt v6 to a 5ltr and an LS1 as well done in my garage, so i'd be happy to help out.

but i highly suggest not to install that motor.

i can tell that is not a vt 5ltr as it is missing a vaccum line from the throttle body, vt ran 2 extra vaccum lines, its also running a vn-vs alternator and pulley setup.
if it was a vt motor, i highly doubt someone would go to the effort of replacing a throttle body and all the pulleys and alternator with a older generation motor.

if you need a hand verifying the motor, post up the engine number and i'll be able to tell you whether its a hydrolic motor or a roller cam motor.

i'm aware of that mate i couldnt find a roller cam anywhere so just got this the fella at work is blue slipping it he knows what it is out of so should be all fine umm bout the other vacuum lines where do they go lol i cant find any1 around here who has 1 of these stupid things

[VrWagz1]

Very nice, i like the painted block look.

[CM99VT]

Very nice, i like the painted block look.

thanks mate i thought it looked a bit better than just plain ive been copping it from the lads at work though for painting it orange lol

[CHEETR]

you will also find that the motor will be grosely underpowered for the car, and you will probably have better performance from a buick ecotec rather than a vn-vs 5ltr due to the shear weight of the vt.

which vaccum lines are you talking about, post up a pic and i'll tell you where they go

[CM99VT]

you will also find that the motor will be grosely underpowered for the car, and you will probably have better performance from a buick ecotec rather than a vn-vs 5ltr due to the shear weight of the vt.

which vaccum lines are you talking about, post up a pic and i'll tell you where they go

dunno the ecotec was pretty ordinary its the same motor so i dont think it'll matter and itd got flat tops and been bored out a lil bit with apparently a baby cam so it'll go ok... umm ill get some pics wen i go into town next as its at my work the big 1 that goes through the manifold hooks onto the fuel reg apparently??? and theres two at the throttle bodie i'm unsure of. ahh and what did you do about the pollution gear??

[CHEETR]

i ran all the pollution gear on mine.

and you won't be able to get that motor running without the top end from a vt motor they are completely different.

here is the differences

- Dizzy
- pollution gear and PCV
- VT runs sequential injection
- VT runs Maf sensor
- Different pulley setup and alternator
- VT has a few more vaccum lines
- VT has valley fittings and runs a roller cam
- VT runs a completely different computer and memcal in order to run the seqential injection and maf sensor, and this is going to be the hardest part for you there is pretty much no way around this without a vt top end and injection setup and vt computer and harness..

the 2 on the throttle body run to the PCV which run into the breathers, which forms part of your pollution gear


vt also had more power from factory than vn-vs motors.

[CM99VT]

i ran all the pollution gear on mine.

and you won't be able to get that motor running without the top end from a vt motor they are completely different.

here is the differences

- Dizzy
- pollution gear and PCV
- VT runs sequential injection
- VT runs Maf sensor
- Different pulley setup and alternator
- VT has a few more vaccum lines
- VT has valley fittings and runs a roller cam
- VT runs a completely different computer and memcal in order to run the seqential injection and maf sensor, and this is going to be the hardest part for you there is pretty much no way around this without a vt top end and injection setup and vt computer and harness..

the 2 on the throttle body run to the PCV which run into the breathers, which forms part of your pollution gear


vt also had more power from factory than vn-vs motors.

got the harness got the dizzy the sequential injection is controlled by the dizzy isnt it?? so id have that covered pulleys are no biggy i wouldnt imagine and isnt the maf sensor in the air tubing which i still have to buy

you know what your talking about mate thanks for the help

Craig

[CHEETR]

no worries dude, when i did the conversion i struggled to find info on it so it was alot of test and play sort of.

the maf sensor is inbetween the throttle body and the airbox, on your harness you will have about a metre long wire with a 2plug end on it that connects to it, the maf is controlled via the computer.

if you have a vt harness and computer you should be fine in that case, the VT V6 maf sensor is identical to the V8 one, so just grab one of those from a wreckers.

if you need the VT 5ltr AIRBOX setup , i think i have a spare one i was gona whack on ebay.

if you need pics of anything let me know, cos i have thousands of them from my conversion

[CM99VT]

no worries dude, when i did the conversion i struggled to find info on it so it was alot of test and play sort of.

the maf sensor is inbetween the throttle body and the airbox, on your harness you will have about a metre long wire with a 2plug end on it that connects to it, the maf is controlled via the computer.

if you have a vt harness and computer you should be fine in that case, the VT V6 maf sensor is identical to the V8 one, so just grab one of those from a wreckers.

if you need the VT 5ltr AIRBOX setup , i think i have a spare one i was gona whack on ebay.

if you need pics of anything let me know, cos i have thousands of them from my conversion

i still have my v6 so ill use its maf sensor how much u want for that airbox mate will be needed..
in the process of sorting out the computer quick question what side did the knock sensor go on as i think i put it on the wrong side the connector reaches but just doesnt look right...
i need pics or just plain info on like the vacuum lines and little **** like that and the pollution gear if you can

Thanks mate

[CM99VT]

well its been a while dam apprenticeship wages but the car is nearly finished will post up some pics when i get them but im cheering its finally nearly done.. and can stop spending money just to get it to run will also try n post a video of what it sounds like with the gilmer kit and twin 2.5" with only 1 muffler on each side

[CM99VT]

well guys was running ok had it rego'd n what not though the cam was a dud.. it seemed the cops liked it as much as every1 else giving me 6 defects for the 3 days it was on the road...
overall the conversion wasnt hard just fiddly in some places learnt a lot from it the only real drama i had was i didnt shorten the tailshaft which in turn chewed out my rear gearbox seal blowing oil everywhere that was lovely.. heres some pictures if they work will try n get some videos after the new cam is installed let me know what ya's think

Craig