425 olds engine code 389244D

mwmjr · 02-19-2007, 11:10 AM

Can anyone point me to some information I can find about the 425 engine. The code is 389244D and the year as far as I can tell should be 1966 or 1967.

Thanks for any help

Mike

2blu442 · 02-19-2007, 06:18 PM

Hello Mike
Check the head casting, if it's a 1965 it'd be "A", 66 a "B", 67 a "C" That would be a letter that's maybe an inch tall located next to the #1 and #8 sparkplug holes. Check the FAQ list at the home page of this site for more details. Also, if it's a Toronado the center of the intake will be sunken and the oil pan will have a provision for the front drive axle, then a little lower in the front and the lowest part of the back will have one side lower. Should have a forged steel crank, and if a 4 bbl carb a higher compression and hp output. John

70Wcars · 02-20-2007, 05:59 PM

That is a 66 or 67 425...problem is that motor was available in two configurations. 45 degree lifter angle or the more common 39 degree. Also two lifter Dia. The .921 is the more pricey of the two sizes. There is a " drill spot " on the raised casting on top of the timing case next to the oil filler tube. Can you post a pic of the top showing the casting number and the area next to the oil filler?

mwmjr · 02-21-2007, 09:32 AM

I dont have a picture of the spot you are referencing but I will look for the drill hole.

Thanks

frdmftr · 02-27-2007, 11:30 AM

I posted some pics of my 67 425 motor on another thread : look under Eighty Eight section: Help, what is this? Check Images- Need Info

Is there an indicator of which cam angle this is?

FRDMFTR

02-19-2007, 11:10 AM	#1 (permalink)
mwmjr Junior Member Join Date: Jan 2007 Posts: 14	425 olds engine code 389244D Can anyone point me to some information I can find about the 425 engine. The code is 389244D and the year as far as I can tell should be 1966 or 1967. Thanks for any help Mike

02-19-2007, 06:18 PM	#2 (permalink)
2blu442 Senior Member Join Date: Sep 2006 Location: Medford, Oregon Posts: 801	Hello Mike Check the head casting, if it's a 1965 it'd be "A", 66 a "B", 67 a "C" That would be a letter that's maybe an inch tall located next to the #1 and #8 sparkplug holes. Check the FAQ list at the home page of this site for more details. Also, if it's a Toronado the center of the intake will be sunken and the oil pan will have a provision for the front drive axle, then a little lower in the front and the lowest part of the back will have one side lower. Should have a forged steel crank, and if a 4 bbl carb a higher compression and hp output. John __________________ 1964 Cutlass Factory 4spd 1965 442 4spd 1967 442 Auto 1967 Cutlass Convertible 1968 442 Auto 1969 442 W30 Auto 1970 442 4spd 1971 Cutlass Flat Top Wagon 1973 Che*vy 3/4 Ton 454/TH400 Tow Vehicle Only the tow vehicle is finished!

02-20-2007, 05:59 PM	#3 (permalink)
70Wcars Member Join Date: Jan 2007 Location: Texas Posts: 55	That is a 66 or 67 425...problem is that motor was available in two configurations. 45 degree lifter angle or the more common 39 degree. Also two lifter Dia. The .921 is the more pricey of the two sizes. There is a " drill spot " on the raised casting on top of the timing case next to the oil filler tube. Can you post a pic of the top showing the casting number and the area next to the oil filler? __________________ Dan S 70 442 W-30 4-speed 70 442 W-30 Post Coupe Bracket Race car..11.43 @ 3650lbs.

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02-21-2007, 09:32 AM	#4 (permalink)
mwmjr Junior Member Join Date: Jan 2007 Posts: 14	I dont have a picture of the spot you are referencing but I will look for the drill hole. Thanks

02-27-2007, 11:30 AM	#5 (permalink)
frdmftr Freedom Fighter Join Date: Feb 2007 Location: Nine Mile Falls, Washington Posts: 119	I posted some pics of my 67 425 motor on another thread : look under Eighty Eight section: Help, what is this? Check Images- Need Info Is there an indicator of which cam angle this is? FRDMFTR