I have heard some good things about the 425. My 330 in my 67 ragtop is tired & I love a BB. The guy selling it says it out of a 1967 Ninety Eight. Engine numbers 389244. He said the head says CFD. Also said he found another number that said 548. I saw the video & it does run. He don't know much about motors or where to locate other ID markings to give me more info. I'm looking for any input at all as this motor is close in location & I'd like it if it's not some boat anchor. Thank you in advance.

 

If it's the original motor from a 98 it's a high compression 4 barrel motor.

389244D is the casting number for all '66 and '67 425s.

CFD means Central Foundry Division, the place where all GM cast iron parts were made.

The engine number in 1967 was located on a pad on the front of the driver's side head, just under and inboard from the alternator in the photo below:




Here is a guide to the 1967 number codes:




If the car is in fact a '67 98, the code will read Rxxxxxx (with x= any digit).
There is a small chance it could read RxxxxxxS, but that is unlikely.

If the heads have been off, this number could be on the back of the left hand head instead.

Of course, it is always possible that the heads could be from a different engine, but there's no other marking that tells you what kind of engine it is on a non-Toronado.

- Eric

 

Thank you Eric, i will call him tomorrow to get the head stamp number.

 

Naturally, if you can hear it run, ask if you can do a compression check and oil pressure check even if you are planning on a rebuild.

 

Sounds like a plan. Ill have my son do it as he is up where the motor is. I wont get the motor till Dec.

 

It does have the R239659S what makes them better or worse ? Thank you

 

That's the Starfire V8, optional even on the 98, and a step below the Toronado motor.

10.5:1 compression, dual exhausts, 375HP / 470 ft/lbs (vs the Toro at 385/480).

You can't do much better for a stock motor in the Olds world.

- Eric

 

Couldn't agree more, Eric! I had a 1966 425 Starfire.....it was a bear! Hurled that heavy body around like a rocket...only problem now is today's fuel, with that compression.....

 

R...S

Rocket Science!

One step short of the Toronado 425
a great choice.
Grab it quickly

'548 is the latter half of the heads' casting ID 394549, split with half on each side of the lower center rocker cover bolt
See also the huge "C" on the corner of the heads, near #1 and #8 spark plug

Look for this Toronado engine ID DRILL SPOT which your motor should NOT have:

4040_66-To-425_CN6-1.jpg

 

ok motor was delivered & all is as was stated. Original air cleaner is in great shape. Title from car it came out of as well. 1967 Olds 98, one owner. A guy in Glen Ridge NJ. The car got crushed by a fallen tree. It's all there flywheel etc.i wish I knew how to insert pics in thread.

 

I want it.

- Eric

 

Very nice. If anyone is looking I have a running 67 toronado 425. Still in the car.

 

MDchanic the motor is at my sons house. He found these numbers R239659S. Does that help ? Thank you

 

I saw that engine on ebay, looks very correct to me as a 67 Sfire 425. Air cleaner is correct with the longer 4bbl snout on it which was a Sfire only unit. Dual exhaust manifolds etc. It should have a D cast on block just above water pump to the tight of oil fill tube and C letter heads. Hope it works out for you, that is a great engine!

 

Ya it does have the D at the end of the numbers behind water pump. Yes it was on EBay & amazingly the seller lived about 5 miles from my son. He delivered it free. I didn't take the trans as I was advised it wouldn't work in my Cutlass. He made me a deal for engine only. Super nice guy with some bad *** cars.

 

Well you really should consider a stronger trans to go behind that 425. I am thinking you have the 2 speed Jetaway now which is not a Chevy Powerglide. That 98 trans turbo 400 switch pitch could be made to work with a shorter driveshaft but would be better to get a short tail Turbo 400 like the 442 used as it would make the install much easier.

 

Ya Oldsmaniac there is no question that the 2 speed junkaway has to go. The short tail TH 400 seems most practical or a very well built TH350. Will the TH400 go in as easy as TH350 ? Im looking for less aggrevation & modification if possible. Thanx

 

Ok let me see if I have this right... The T350 would need a downshift cable hooked to throttle for passing gear. The 400 uses a switch that you already have on your accelerator. I would go with the 400 and not worry about beefing up a trans. Externally they are not much different and install about the same. Yokes are different between the 2. You will want to decide if you want a switch pitch turbo 400 which was the 67 A body trans or the later 68 up non switch pitch trans. The switch pitch requires the appropriate torque converter.

 

The TH400 will require a shorter driveshaft or having yours shortened, as well as a different yoke.

The TH400 also mounts with the crossmember in the rear set of holes, which will require a new set of emergency brake cables, because the mounting locations will move.

- Eric

 

If yours is a column shift you may want to look for this dash bezel with the extra S range.

 

Ok gotcha. The trans is my next hunt. My real fantasy is a 4 speed but I couldn't take the aggravation. Lol

 

 

Yes it is column shift. So I'll need to find the extra set up. Thank you

 

Nope. Just try to remember most of what I read and hear, so I make as few of everyone else's mistakes, and as many of my own new ones, as possible.

- Eric