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Canadian Poncho Homepage -> Canadian Poncho -> Hillar's General 65-70 Full Size Forum -> Need help identifying an engine.....
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High Gear Guy


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Need help identifying an engine.....
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Greetings All :

Had a quick question here about a G.M. engine...

I came upon another wrecked 1966 Pontiac Parisienne, drivetrain all there, but not much else.

The Guy that I got it from swears it as a 283 engine, but I am not so sure. Back in the day when they were putting the G.M. drivetrain in these Canadian Pontiacs, I always thought that the engines were painted orange, and usually had stick on decals on the rocker covers. They also had the tiny flat sort of half moon shaped rocker cover hold down washers under the bolts each about an inch long or so.

The other odd thing is that it still has the oil filler tube on the front of the intake manifold, but there is also a screw on filler cap on the back of the left hand rocker cover

This engine in the Pontiac is painted completely back, oil pan right up to the rocker covers . The hold down bolts are like metal straps, maybe 3-4 inches long, which remind me more of the 1980's to 90's style of rocker cover hold down washers.

On the right front of the engine block there is a stamping number, and wondered if anyone here could decode what this engine might be. The number is as follows :   K0785000

I am wondering if someone may have swapped the original engine out to a 305 or 350 perhaps, and for whatever reason just stuck the old 283 intake and 2 barrel carb on top ?

Any comments or opinions here would be very welcomed. A couple of pics for review.

Jim, The High Gear Guy 



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Jim Oke

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4SPEED427


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Hi Jim

Can you get the number off the block behind the driver's side head? That will tell the story.

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1966 Strato Chief 2 door, 427 4 speed, 45,000 original miles 

1966 Grande Parisienne, 396 1 of 23 factory air cars (now converted to a "factory" 4 speed)
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ABC123


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I may not be an expert here but,

Looks like a 1980 305 with the 283 intake.

https://www.hotrodders.com/forum/driverside-dipstick-3970010-a-152358.html

"Thats the site i found. Thanks SSedan! Just for the hell of it I looked up the date on the 305 i bought to run in my pickup until my 454 is done and it appears to be made November 7th 1980 (K0785000) if i am reading it correctly."



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beaucarlo


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66 had a canister oil filter but adapters were available
66 original ignition wires ran under the exhaust manifolds and thru the
motor mounts(the brackets still there?)(mounts were probably changed though)
looks like a little orange paint on the pcv grommet
block # would settle everything

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bob lewis
Prefectca


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In my years as a mechanic I have seen lots of things like this. Easier to change the intake than adapt the fuel linkage and modify the wiring for the temp sender. I even worked with a mechanic that drove a 66 Caprice and he swapped the valve covers for 350 covers and plugged the hole for the oil fill in the manifold with a frost plug. He didnt like smelling the blow by when stopped at a red light.

Paul

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JC2+2


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Pcv in valve cover and dipstick on drivers side would be 68 to 78 I believe. But like said before, numbers will tell the story. 



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High Gear Guy


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Hey Carl and everyone else who helped here !

Just learned that you have to be a deranged contortionist to read this casting number, but after removing the kick-down bracket and some other stuff, the number was as clear as day....

The Mystery Casting Number is as follows :  460778     picture enclosed using a trouble light, 17 mirrors, and some new expletives here and there.

I am really hoping that one of you Guy or Gals here will humour me a bit, and tell me that this is an ultra rare 455 HO, 335 HP., 480 ft.-lbs. of torque, which would likely make the old '66 Parisienne do the quarter in 13.9 seconds flat, at 103 MPH. I would be so very happy, although....sigh....I don't think that engine would work well with a 2 barrel Rochester carb.  Just wishing here.

Can anyone here unravel the mystery casting number here for me ? 

Thanks in Advance Folk's !

Jim The High Gear Guy



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Jim Oke

"Hope for the Best,...Plan for the Worst"
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cranks38


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460778 78-79 305  Pass,Malibu,Camaro,Nova,Monte Carlo







-- Edited by cranks38 on Tuesday 19th of May 2020 04:05:15 PM

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HK1837


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As above, someone has bought a used running late 70's 305 and fitted the 283's intake setup and exhaust manifolds. The St Catharines number on the engine number pad doesn't make sense though, a few wrong digits I think. The K07 is OK but the rest makes no sense.

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4SPEED427


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Well, the good news is, it's an ultra rare 455 HO, 335 HP., 480 ft.-lbs. of torque.

Not.

I concur with the others who say it's a 78-79 305.

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1966 Strato Chief 2 door, 427 4 speed, 45,000 original miles 

1966 Grande Parisienne, 396 1 of 23 factory air cars (now converted to a "factory" 4 speed)
High Gear Guy


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Thanks to all of you Poncho's here !

You Guys are such a wealth of knowledge !

So...."Hello Mr. 305".....Ho Hummm, and "Goodbye to the dream of the 455 HO"......Shucks !!!.

If I dropped a 455 HO in my old Parisienne, I am pretty sure that the rad saddle would be on the ground !

Thanks again !

Jim, The High Gear Guy



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Jim Oke

"Hope for the Best,...Plan for the Worst"
High Gear Guy


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I worked in a local G.M. Cadillac, Chev, Olds, Corvette Dealership for about 5 1/2 years too long in my life. I came aboard the G.M. Ship right about the time that the 305 engines were eating camshafts. Apparently back in the day, there was a serious case hardening issue with the camshafts used in those engines. I changed over 90 camshafts during those days. Lots that were defective, most of the cam lobes were just worn away, and some of the lobes looked almost like the main bearing journals on the camshafts. I did so many of them, I started to think I could re & re them in the dark, and had them piled up like cordwood under my work bench so that the travelling District Service Manager could have a look at them before they went to the scrap bin. Our Parts Department were making up "Cam Kits" for the Licenced Mechanics, and they had the new camshaft, lifters, timing chain and gear, rocker cover gaskets and the required antifreeze, engine oil and filter all ready in a box. Those were the days My Friends !

Jim, The High Gear Guy



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Jim Oke

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Prefectca


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In 1967-68 there were also camshaft problems. Lots of 327s were changed in the five year, 50,000 mile warranty.

Paul

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