Hi everyone.
first sorry for my english i'm french.
With a Friend we try to get black on road a Z28 305ci of 1982.
After change or correct all the Bad things of the last owners WE need help...
The rod bearing are used so we will change it but WE are Lost with all the différent part to choose the good one part
So maybe you Can help me...
On my actual rod bearing there IS this ref
A GM
A-200
.00050.S.
5 82

And on the block there is this ref
V0622C 2W
1CN154479

On rockauto or summit there IS a lot of choice son if you Can guide me to but the good one.

Many thanks to all if you for help

 

The Flint Mi. assembly plant used many different over and undersize bearings. The .0005" was common. Unfortunately, not available in after-market that I am aware of.
With anything this old it is best to determine what exactly we are dealing with. All crankshafts have a casting number located on one of the rough finished throws or counterweights towards the front of the crank.
And
The Casting Number of the block (unfortunately) not what you listed above. The casting number is found at the rear of the block on the driver's side.

Once you get those numbers post them, and we can go from there.

 

Ok thanks.
So i need to find the cast number on crankshaft and the cast number of block ?
Do you have an example of where are the cast block number ?
Thanks a lot

 

Yes indeed - We need both to make a somewhat educated (if we believe in such a thing) guess.

The cast number of the block is located in the back of the block. The opposite side of where you found the VIN info.

 

Took a bit to understand the codes you posted.

V0622
Flint Michigan plant June 22

C2W
1982 305. 155 hp and came with a 4 barrel carb.

1CN154479
The last 9 digits of the vehicle the engine originally came from.
Year digit is C so the block came from a 1982 vehicle which matches the suffix code.

Since you've already claimed it was a 1982 305, I would have to say the engine is still original so the VIN on the block should match the VIN on the car. Chances are that the engine has been disassembled and had machine work previously done to it is very slim.

As for the proper sized rod bearings, without measuring tools, you're only going to guess on how close the stock crank is to spec. Buy standard sized bearings. Use plastigage to check clearances. If within limits, keep assembling. If the bearing clearance is too tight or loose, return the bearings for a different sized set. If there was any sort of damage to the crank or old bearings, the crank should be turned and proper resized bearings installed.

 

Ok thanks.
I will measure crankshaft to see if it's origin or resized.
if it's origin i will buy standard bearing and verify with plastigage.
But i'm Lost with all model on rockauto and with the A/H/V/P.... Séries, which one i need for classic use ?
And which Brand are good ?
Thanks a lot

 

An H series bearing will do just fine. P series is very old school style and isn't really used any more. V and M should not be in a daily driver engine. Don't know what an A is.
Clevite is the most popular choice for bearing brand.

 

Hi.
Happy New year and best wish !
WE change bearing, oil pump.
Now motor run great !
Thanks for help.
Now i will Ask for a shifter th700 because origin IS a th200c but WE have put a th700r4 and i need a shifter