350 rocket

[bigponti72]

Olds 350 rocket block and heads for sale. block ID is 395558 2. I believe it is out of a 1968-1970 olds car. I just need to get rid of it. Block and heads appear to be in real good shape. Super cheap and all offers accepted.

[Oldsguy]

Where are you located? What is the number code on the left/lower side of the head as you look at one?

[bigponti72]

I live in Aurora, Illinois and the heads are #8 heads which are the 79cc heads I believe.

[88Cutlass]

is this motor still up for sale?

[bigponti72]

Yeah its still for sale

[88Cutlass]

do you have any pics of it

[Dennis Davis]

Originally Posted by Oldsguy

Where are you located? What is the number code on the left/lower side of the head as you look at one?

OldsGuy,
Have a couple of questions. I just bought a Olds 350 Jet out of a wrecked 76 cutlass. (No engine harm) I want to rebuild it with some high performance parts (cam, intake etc.) but I need to know the significance of the engine numbers you are refering to; to make part finding easier. I see different numbers on the engine but do not know what they mean.
tks
Dennis Davis

[Oldsguy]

Well, the number on the heads will tell their generation and hence their flow characteristics, i.e. big blocks (455s) had letter designations like B, C, D, J, and the earlier heads flowed better, the J heads were mid seventies and made for low compression use they had little bumps inside the runners that restricted flow. Small block heads (350) had number designations like 5, 6, 6A, 6a, 7 and maybe more, and some of those flowed better than others also. Then there is the engine code itself which identifies when it was built and therefore gives you an idea of it's quality and performance capabilities as well as a clue to if the engine in your car is the same age as your car itself (numbers matching comments on some sales etc). As an example: in 1973 engines had an alphabetical prefix of ccc/ccd/cca/ccb for 100 nhp 250 cid engines,; qn/qo/qp/qq/qs/qt for 160 nhp 350 cid engines and so on and then engine suffix numbers indicating manufacture numbers but many are not available, depending on the year and model and reference you may be using. Finally there is an identifying stamp on the ends of some crankshafts that identify higher quality, you may have heard of the "N" which indicated nodular iron. Anyway, you might want to go on over to Realoldspower.com and check them out, they are true horsepower fanatics, particularly the late sixties to early seventies 350 and 455 engines, the "musclecar erra". If you post a tech question there you will definitely get some positive info. Good luck.