hey guys,
im new to the forum and was wondering, i have a 67 chevy with a carburated 350 with mods and saw a 1990 gmc sierra reg cab short bed for not to much at the dealership i work at. it already has a fuel injected 350 in it and i was wondering how hard it would be to swap the motors out...
Thanks in advance
this is in the 67, all the same not,exept the carb.

http://i1297.photobucket.com/albums/...ps3c951a92.jpg
http://i1297.photobucket.com/albums/...psf616ec0e.jpg
This in the sierra
http://i1297.photobucket.com/albums/...psc4e268b9.jpg
http://i1297.photobucket.com/albums/...psa08ec45b.jpg

 

Engine swap will probably be straight forward. It's the electrical that will be a bigger chore.
Electronic fuel pump in the fuel tank. So you'll be switching out fuel tanks too.

 

what tank could i use, if i swap the tanks that would really be the only thing though, right?
im trying to figure out what else there is but i cant think of anything...i think it has a 700r4??? i have the same trans on the other as well

 

Well the thing about the transmission in the '90 truck is it has an electronic torque converter lockup, and an electronic speedometer. I really don't know anything about making the TC lockup independent of the ECU, but I'm sure it could be done relatively easy.

I'm assuming it'll be pretty easy. Almost exactly the same engine. Honestly though, I would say to keep the TBI intake and bore/tune it instead of going carburated. Now you want to go TBI/electronic 350 in the '67, or carbed engine in the '90 truck?

 

It won't be a power house but will make the '67 more driveable.
Should be a fairly easy swap and painless wiring might even offer a complete EFI harness for your needs. Fuel pump will be easy as well, TBI motors only need 9-13 PSI of fuel pressure so a frame mounted electric pump will work. There are internally regulated pumps but I'd prefer to use one that has enough flow/pressure for a return system utilizing the TBIs pressure regulator. IIRC there is a speedo drive unit that will give you a electronic signal for the ECM while allowing a cable to operate the factory speedo. That will require changing out a speedo drive gear on the output of the transmission.

OK, just looked at the pics.
What exactly are you thinking about doing?
That carb'ed motor has roller rockers, aluminum heads, high rise dual plane intake, long tube headers etc. Depending on cam, compression etc it might not run right with a TBI unit at all.

 

488/302 cam , 11:1 compression

 

I put a injected engine in my 82. But I did a total makeover on my truck, interior for replaced and everything, s I pretty much took the wiring harness off on the 2001 and put it all in the 82, and I used the 01 tranny, instriment panel, and all that.

 

Uh, yeah, no on the TBI for that motor.

So are you gonna put the carb'd motor in the '90?

 

I would like to, from what i understand all i would really need is a fuel pressure regulator and not much else....pull out engine and trans in the 90 and put the 67s back in.... The trans is a 700r4 so it should hook right up to the drive shaft.... Never done it so im hesitant...but doesnt sound to bad

 

Why do you want t put the carb engine into the 1990 truck?