350 or 305??

[87BrnRsd]

I have a motor but dont know if its a 350 or a 305. I pulled this number off the crank and was told that it could be determined with this number:
4577

If that doesnt determine it, I can get other numbers off of it. Can someone tell me if its a 305 or a 350? Thanks.
-Harrison

 

[pauly383]

Where did ya get it , does it have an intake with a hole for a long tube up front ?

Case being MORTEC says that crank number is for a 327 , forged so its a good piece for its time , just small journals , from mid 60's .

get the block numbers of the rear , and the engine codes off the pad in the front .

4577.......327.......forged..small journal....3.25" stroke

http://www.mortec.com/cranks.htm

http://www.nastyz28.com/sbcmenu.html says 1962-1967 327 crank . Although the stroke is the same on 307's , it wasn't put there by GM , so it could be a homemade engine or a 327 .

 

[87BrnRsd]

Ok, I got a few more numbers.
This one came off the passenger side of the block near the bottom of the bellhousing:
I2 7 V

And this one came off the passenger side of the block near the water pump:
CE8 650 74

There is one more number, but my brother has it with him. I can get it later tonight.
-Harrison

 

[dyeager535]

The suffix code is going to be the "best" code as it tells you pretty much everything the engine was when it was originally built. Casting numbers are ok too, you just get more from the suffix code.

 

[pauly383]

Double check for a suffix code like Dorian mentioned .

But I want to say that its an early 68 warranty engine , PROVIDED you got that on the pad on the pass side . Early 68 would still be small journal , and I think all small journal motors were forged , and thats a carryover crank. Or somone rebuilt it with that 62-67 crank . Too hard to tell until you double check all numbers .

CE865074 looks like

c : Chevy
E: Engine
8 : 1968

65074 : sequence number for Tonowanda engine plant , which used 50000 to 79999

This is from a search just now , but CE engines were common when cars were fun .

 

[mr_clean]

couldn't you just measure the bore? 350 = 4" 305 = 3.75" (I think that is a 305 bore but not 100% sure on that)

 

[pauly383]

Thats too easy , it sounded as if there were heads on it .

But seeingas how its a small journal crank , it couldn't be a 305 . And I have never heard of a small journal 307 , I think 307's were all large journal like the later 68 327's .