Dream Bikes

On my 69' 350 300 hp I can read this number : 14316379

I can't find it on mortec page, but here (the last ones of the page) :

http://www.nastyz28.com/sbchevy/sblock.php

where I can know only that's a 69-85 engine...

Could be the stock engine or a replacement?


I need to know it to set initial timing...

GM specification for a 69' 350 ci 300 hp are 4° as initial timing but younger engines has typically higher initial timing value...

thanks for the help!

SoCalErv

Are you looking at the pad above the water pump? If so that is the vin that is stamped there with the build date.

The casting number of a sb is located on the top driver's side at the flange at the rear of the case for the transmission housing

For timing just set it at 36 degrees all in at 2,500 rpm's, who cares what the initial timing is.

There are so very good threads concerning this procedure.

Dream Bikes

14316379 is the casting number not the Vin and as you wrote is located on the top driver's side at the flange at the rear of the case for the transmission housing.

Yes, the total timing is much important than initial timing but I'd like to know which is the correct initial timing value for my engine...

SoCalErv

What side is the oil stick on sitting in the drivers seat?

SoCalErv

take another look at you engine. 14016379 is a 77-79 SB. It is the only number that matches the last (4) digits

wolfemc

14016379 is a casting number corresponding to a late '79 350 corvette block.

14316379 matches include:
69-85 Truck with Two Piece Rear Main Seal
and
78-81 Pass,Malibu, Camaro,Nova with One Piece Rear Main Seal

Dream Bikes

Please give a look at this link :

http://www.nastyz28.com/sbchevy/sblock.php

as you can read in the last line 14316379 matches...

PeteZO6

Well, you now know you have a replacement block, late '79 as wolfemc sez, (and the Corvette Black Book confirms) and from the link you supplied it is a '78-'85. And while paint isn't positive proof, no '69 Corvette had a blue block.

As to timing, the 4° initial is correct for the stock engine with smog equipment, especially the AIR pump. That is an emissions setting, the small amount of advance was to dilute the intake charge to reduce hydrocarbon emissions at idle. If you don't have the stock smog equipment, you can liven the engine up significantly by following the timing suggestions found all over this forum.

Cheers,
Pete

Mike Ward

Knowing the casting number will not give you any clues as to the correct ignition timing. You need to know the build configuration of the engine- cam, compression ratio, ignition curve etc.etc.

Without this you're just shooting in the dark.

Dream Bikes

Ok, I agree...

Now I know that I've a replacement engine about ten years younger.
But I don't know anything about the build configuration and I will not surely open the engine only for setting the initial timing!

Air pump and other smog equipments are missing on my car...

So I think I will try with an higher initial timing (8-9°), but total timing is much more important so I think that the exact initial timing value will not be so decisive

RHD '68 L89

Dream bikes, you're not listening.....
IGNORE the initial timing setting. Set the timing as per Lars papers (search the forum for these) You don't have an original motor so there is no point in setting timing to Factory specs. You will get much better performance from you car if you follow Lars instructions.

SoCalErv

I set my timing per Lars paper and BarryK long string a couple of weeks ago and it runs better than ever. Forget the initial BS.