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Help id chevy block

7K views 16 replies 9 participants last post by  BuzzLOL 
#1 ·
I have a chevy 350 block that I need to get a gasket set for, but, I dont know which one I need. I have seen two different sets, one for up to 80 and one for 81-85. The block, I was told, is a gm goodwrench block. It has a suffix of vl. Can anyone help with what year this block is or what the difference in gasket sets are? Thank you.
 
#4 ·
Hi
The "V" is a Flint engine.

Casting Date
Small block casting date is located on driver side rear of block on flange forward of bellhousing. Big block on the right side of engine above the oil pan rails.
Casting Date Example: E038 - (E = Month, 03 = Day, 8 = Last digit of model year (1978)).

Month: A = Jan, B = Feb, C = Mar, D = Apr, E = May, F = Jun, G = July, H = Aug, I = Sep, J = Oct, K = Nov, L = Dec
 
#6 ·
vl block suffix

Hello, I too have a small bock Chevy engine that has the VL stamped on the block. Mine is VL041800. When I bought the car, it had Target Master decals on the valve covers. Problem is, the engine was built by Dr. Frankenstein. The engine was poorly painted all black. But the block was showing Chevy blue underneath, the intake was the original Chevy orange and the heads were black. The cast number on the back is illegible, so I am lost.
Have you had any luck in identifying the block, as there isn't any listing for VL in any list I have seen, and your post is the only thing on the internet I could find.:confused:
 
#7 ·
Chevy red-orange
Chevy orange
chevy blue
General Motors Blue
Black

The chevy red was an early color used on some of the 1950's 265 and 283's

Then the chevy orange used from late 50's to mid 70's

Around 77 they used the chevy blue on 350's and 400's, and used GM blue on the 305's

The GM blue was a lighter blue, but not as light as pont. blue. Chevy blue was a dark blue

That lasted till 1982, then everything went black.

If you want to ID the engine do not trust color. Anything can be re painted any color you want it.

Get the suffix code of the front pass side of block in front of head on machined pad..

And the casting # off the driver side rear of block, behind head on flange that trans bolts to.
 
#10 ·
Most sources I've seen say that the serial number on a crate engine is just a serial number, and not an indication of when it was built, like engines that came in cars new. CE (US built) and ML (Mexico built) were used as prefixes on crate engines. I'd guess you're correct that the VL is also a crate engine designation, but can't say from where it was used. If you could look the block over, and possibly find a Mexico cast into it somewhere, that might answer where. Afraid you wont be able to answer the year without disassembling it.
Once it's torn down you can determine if it's 1955-85 or 1986 and newer by the rear main seal. If it's 2 piece it's early '85 or older, and 1 piece is 1986 or later.
 
#11 ·
It goes like this:

1) Pans have different heights to the timing cover Straight edge on gasket rail to bottom of arc:
1.A.) 2-1/4 thin, these will all be drivers (left) side dip stick and 2 pc RMS. will production years 1955 through 1974.
1.B) 2-3/8 thick, these are more complex;
1.B.A) 1975 through 1979 will be left side dip stick and 2 pc RMS.
1.B.B) 1980 through 1985 will be passenger (right) side dip stick and 2 pc RMS
1.B.C) 1986 through end of SBC Gen I, II production will be right side dip stick and 1 pc RMS.

If you know the month of the engine's assembly toward the change over previous year it is not uncommon for late production say 1979 to have a 1980 block and pan, so check before you buy parts if your toward the end of the production year which is the late spring to early summer before the September/October release of the new years production.

Bogie
 
#13 ·
SBC Oil pan side gaskets are not symmetrical, and cannot be flipped side-to-side to match either drivers side or passenger side dipstick blocks. Shape near pan corners at each end of the block are very different from one side to the other.

Most gaskets sets cover this by providing oil pan side gaskets with a "knock-out" section to accommodate the passenger side dipstick location in the same set. Sometimes they will use 3 different oil pan rail gaskets, a drivers side, and two different passenger side gaskets in the same full gasket set.
 
#17 ·
. Don't need to tear into engine to determine if 1 or 2 piece rear main seal...

. earlier 2 piece seal crankshaft rear end has a counterweight cast onto it...

. 1986 & up (later in some trucks) 1 piece rear seal crankshaft is smaller at rear end and round to allow slipping into a 1 piece rubber seal and thus can have NO counterweight cast onto it...

. 1986 SBC in some vehicles is a hybrid engine with newer (possibly roller cam ready) shortblock/crank, but still earlier perimeter (2 + 2) bolt valve cover heads... (as opposed to newer 4 bolts in line valve covers/heads)

. Mexican crate engines of any year are all crappy early 1970's design... 7.6:1 actual compression ratio... (can be fixed with good pistons)
 
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