Howdy,
LS newb here with a GMT400 truck that already has an LS swapped into it. Can't seem to see casting #'s on the back of the block no matter how hard I try; having a better idea of exactly where I need to look would be good - might be some crud covering and I'm just not scrubbing the right place. Very limited access and visibility.
Also head #'s appear to be 803 at the corner?
Block is aluminum. Intake is the black plastic style that appears to be LS1 type but not sure. Throttle body is 3 bolt and DBC.
Accessory drive system appears to be aftermarket.
Engine is *supposed* to be an LS1 but the seller is shady so I'm not confident in his claims.
Harness is a hackjob nightmare and it seems there's boobytraps everywhere waiting to break if I attempt to lay across them to search for casting numbers...
Thanks in advance,
Richard