engine help!

[old_1966_GMC]

hello i need help trying to find a list of engines that can bolt rigth in my 66 gmc. And also from what year and vehicle. My truck currently has the 305E onit rigth now which was rebuild a few years and ago

[old_1966_GMC]

i must be blind with no reply then

[fryer1979]

If the 305E is the standard Chevy small block V8 then pretty much any small block Chevy should be a bolt in. If the 305E is the V6, then I am at a loss. I'm not very familiar with those engines, sorry.

[raycow]

There is no engine which will bolt in except for another V-6. A Chevy V-8 or inline 6 would not be overly difficult to install using Chevy truck parts.

To keep the installation simple, choose a carbureted engine from the mid 80s or earlier. Figure on replacing the mounts, exhaust, flywheel and bellhousing. You will have to re-route the fuel line and some of the wiring and plumbing. The stock V-6 radiator will work.

Ray

[old_1966_GMC]

are there any parts i can upgrade my 305E like the big stock water pump it has will one fit from another engine or no?

[old_1966_GMC]

this my first 66 truck that im ganna be working on for a while

[slorio]

Take a wander over to this website:

6066gmcguy.org

The V6 305E is a great engine that will last. The site I recommended has a couple of easy upgrades such as HEI ignition and installation of a Holley carb in place of the original Stromberg that will make your 305E purr like a kitten.
Regards,
Steve
New Orleans

[old_1966_GMC]

what about the big cooling pump that it is it interchangeable?

[raycow]

Originally Posted by old_1966_GMC

what about the big cooling pump that it is it interchangeable?

The water pump isn't especially big. It's round, about 5" diameter, and held in place with 4 bolts. The rest of what you might be thinking is the pump is a water manifold which doesn't get replaced.

On the light truck engines only, you can use a pump from a 55-early 63 Pontiac. The Pontiac pump has a different casting number and looks slightly different, but it will fit and work. This is about the only engine part that interchanges with anything else. At one time the Pontiac pump was easier to find than the GMC, but I don't think this is still true today.

Ray

[old_1966_GMC]

im ganna have to really look at it sumtime tomorrow i dont have the truck at my house yet its in my wife grandfather house still

[1985-GMC]

Sounds like a cool truck, is the engine still running or did you just want to upgrade to something bigger? Oh and we definitely need pictures!

[old_1966_GMC]

it still run like champ sense my grand father in law rebuilt it a few years ago before he past away

[old_1966_GMC]

After slorio past on that site on im just ganna stay with the 305 and do some of the upgrades it had.
not a 402 turbo jet chevy just a spare that was put on for now