Engine codes

canucklehead · 10-02-2007, 10:31 PM

Can anybody tell me the proper way to identify an engine? I have a number here that is off of what is supposed to be a 425. N207878.
Thanks.

J-(Chicago) · 10-08-2007, 06:06 PM

Go to 442.com and try looking it up there.

2blu442 · 10-08-2007, 07:34 PM

If you have problems locating the casting number send me a private message and I'll provide you some photos. John

don71 · 10-08-2007, 07:49 PM

Or better yet look at this photo. This is a 425. This # could also be 386525

I don't recognize N207878 as being an olds specific #??

64 Olds Dynamic 88 · 10-29-2007, 06:07 PM

I have an engine code book that identifies the "N" prefix on OLdsmobile engines for 1965 and 1966 Dynamic 88, Delta 88 and Ninety Eight models. It lists the engine as an eight cylinder, 425 CID with 4 barrel carburetor. The horsepower for the 1965 version is listed as 360 with a 10.25:1 compression ratio. The 1966 vesrion is listed at 365 horsepower.
Hope this helps.

10-02-2007, 10:31 PM	#1 (permalink)
canucklehead Junior Member Join Date: Feb 2007 Posts: 8	Engine codes Can anybody tell me the proper way to identify an engine? I have a number here that is off of what is supposed to be a 425. N207878. Thanks.

10-08-2007, 06:06 PM	#2 (permalink)
J-(Chicago) Seasoned beater pilot. Join Date: Jan 2007 Location: Chicago Posts: 1,406	Go to 442.com and try looking it up there. __________________ I'd rather have a numbers matching poker hand.

10-08-2007, 07:34 PM	#3 (permalink)
2blu442 Senior Member Join Date: Sep 2006 Location: Medford, Oregon Posts: 780	If you have problems locating the casting number send me a private message and I'll provide you some photos. 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!

10-08-2007, 07:49 PM	#4 (permalink)
don71 feed the pig Join Date: Jun 2007 Location: Central Missouri Posts: 136	Or better yet look at this photo. This is a 425. This # could also be 386525 I don't recognize N207878 as being an olds specific #?? __________________ 1971 cutlass S 455/th400

10-29-2007, 06:07 PM	#5 (permalink)
64 Olds Dynamic 88 Junior Member Join Date: Aug 2007 Posts: 15	Engine codes I have an engine code book that identifies the "N" prefix on OLdsmobile engines for 1965 and 1966 Dynamic 88, Delta 88 and Ninety Eight models. It lists the engine as an eight cylinder, 425 CID with 4 barrel carburetor. The horsepower for the 1965 version is listed as 360 with a 10.25:1 compression ratio. The 1966 vesrion is listed at 365 horsepower. Hope this helps.

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