I've had this block for a while now and have been buying parts in preperation for a rebuild, now i have a few questions, the motor in my car has a timing chain cover that bolts to the pan, the new motor sits on top of the pan with a thick rubber gasket sealing it.

now the motor in my car is supposed to be original but i cannot verify this, do i have an earlier style cover and pan on my car, or is the new engine from a later year?

any help would be great as this has been bugging me for a long time

 

come on guys, someones got pictues to help me out

 

how bout you post some pics of the cover, & any numbers that are on the block

 

will do

 

my 1991 camaro motor, tcc sits ontop the pan, thick gasket.
my 1993 s10 motor I had, tcc sits ontop the pan, thick gasket
both 3.4s I used to replace above motors, tcc sits ontop the pan.


Any help?

 

yeah i have a feeling the actual block might be a 3.1 block, with a 2.8 intake put on top.

i'm hoping anyways

i'm gonna have pictues and numbers up in a few minutes

 

heres the cover
numbers on the cover are

5
14090587

hucho un mexico

 

front of the motor i have


the front passenger side fo the block has on it

GM 2BL G


and the rear passenger side fo the block has

9J67

 

it might be a 3.1 . Here's a pic of the 85 2.8 front over & you cain see that the inlet/outlet channels are opposite:






unless it's different due to teh full serp belt configuration.

any spots for ka-nock sensors?

 

actually both the 2.8 and 3.1 have the knock sensor

but this engine didn't come with a csi

so that leads me to believe it might be 3.1


i'm happy even if its only a 2.8

 

for the record, neither my 85 2.8 or my 88 2.8 had a knock sensor, but my 91 3.1 does. my 85 2.8 had the pan bolting to the timing cover, but the 88 had the thick rubber gasket, so they evidently changed it betw/ 85 and 88... but odds are it's a 2.8 if it bolts to the pan...

 

yeah i know they changed over in 88, the new one lays on the pan.

i guess this is something i'll just never know