Early fuel injection conversion?

The guy who sold me this '67 108 G20 suggested it would be a good idea to convert the 2 barrel Rochester 2G carb on the 283 V8 to fuel injection.

I found an article on the web that suggests doing a thottle body, rather than a tuned port, fuel injection conversion is much simpler and works just as well for street applications.

Here's the link:

http://www.automedia.com/TBI_Fuel_Injection_Conversion/pht20001001fi/2

Anybody done this conversion? I'm planning on keeping the 283, since its stock to the vehicle, and seems to run reasonably well (although it might need a rebuild).

Any pitfalls I should know about?

I am doing a tuned port inj engine complete conversion on my 65. I have read alot about all the options. I think the TBI will be alot easier. Be aware, any conversion of an older engine will inprove drivability for sure and power and probobly fuel economy but you will not get the fuel economy of a newer model engine that came with the injection system. You prety much would have to change everything to get fuel milage of say a 1988 vehicle. I would say go for it. and use the distributer , exhaust manifolds and computer from the same vehicle. If the doner intake manifold has the EGR valve, use it, that alone will be good for 3 to 8 or so highway miles per gallon.

Thanks, good info.

i know it has been a long time since you started this thread.
but me and a friend just converted a 250 six to throttle
body injection from a 1992 chevy astro van, had a machinist
make an adapter for the tbi unit. It was a little bit of custimizing
to the throttle pivot in the dog house, we also put the 700r4
in this 67 90in, went from a gas eating, poor starting, always
tinkering with pita, to a very nice responsive vehicle to drive.
If I were going to fi a small v8 I would use a tbi set up from
a 88-92 chevy truck or camaro or firebird with a 305 and you
should be just fine.

here are some pics of the injected six, i think i got it to work,
we also removed the three on the tree for a 700r4.

ok lets try once again

I give up, do not understand why it is so complicated to host a bloody pic!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

not sur just what you are asking me?

hey got it to work, operator error as usual, I need a beer!!!!!!!!!!!!!!ally

here is the trans mount that I made works pretty good

here is another shot of the trans mount

all of these injection parts came off a 92 chevy astro 4.3 runs very
good with no modifacations to the prom. we used a late model cavalier
auto shifter mounted on the engine cover havent got a shot of that
yet.

the great part about this set up is if you ever wanted to
go to a 4.3 v6 it`s just plug and play!!!!
or a v8 you would need the fuel injection manifolds
and a v8 computer prom and you are done.
no more heat soaked flooded carbs, or that nasty
fuel smell we all have grown to love. LOL

SWEET!

that is the knock sensor.

coolant sensor is in the thermostat housing, he is running the
stock 4 blade fan for the six. truck is a real blast to drive.
goes into second gear at about 20 mph if you are just putting
and hits 2nd at about 35 to 40 if you are into it hard, and shirps
the tires too, we also put a b&m shift improver kit in the trans.

Now that is some nice engineering work. Beautiful job on the trany mount. Excelent job on the TBI conversion.

M1D

we do not have an egr sys on this engine, we are not using the
canister pruge valve or the egr vacuum sol. the ignitiion timing
is set between 6 and 10 btdc at idle in park. We grounded the
park neutral wire from the ecm convincing the ecm that it was in
park all the time, in that mode the ecm will never run an egr flow
test or the canister purge test so you never get a code for those
components. the dist is an hei from a 250 six, I used the original
pick up coil and mounted the 4.3 v6 module on the unnderside
of the dist. My s[can [urUsers\user\Pictures\Picasa\Exports\Mike`s fuel injected 250\HPIM1447l=https://servimg.com/view/14537130/22]tool reveals that the sys is working almost
perfectly. Just about the same as an astro 4.3 at idle and at
highway speeds. Here is a shot of the mods to the dist.
I also removed the vacuum advance unit from the dist and
used one of the screw holes to hold the pick-up coil from rotating.

the scan data shows that the o2 sensor is cycling between
rich and lean like it is supposed to do, we are also running the
stock map sensor, the electronic spark module, and of course
the stock ecm. We used the astro wiring harness, cutting out
the torque converter lock up circuit the canister purge circuit,
and the egr vacuum sol circuit. We didn`t use the speed sensor
from the astro because it gets that information from the astro
speedometer buffer, and was easier to put a lock-up conversion
kit in the trans and feed the trans 12 ignition power. the Kit I got
on ebay was very inexpensive and very simple to install.
these tbi units don`t use a manifold air temp sensor, so was
one less to worry about. I haven`t run a 4gas analizer up the
pipe but I`m sure it will pass california`s emissions.
I followed this van on a thourough test drive having him floor
the throttle at about every aspect I could think of and I never saw
a puff of black smoke from the tail pipe. He was getting about 8 mpg
with the carb, anxious to see the change in mileage with this sys.

[img]http://i63.servi[url=https://servimg.com/view/14537130/25]mg.com/u/f63/14/53/71/30/hpim1430.jpg[/img][/url
here a few mor shots of the throttle and the detent cables, and the slight modification
to the pivot in the dog house