allo
#1
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
newbie here, probably be asking lots of questions. i have an 86 trans am w/ unknown modded lt1 unknown tranny and 3.73 rear end. looking for a little help in id` ing my block. bellhousing imprints are as follows 57lg sg1 GM 1. i also have a vin(?) as follows cpe231778. any help would be app. greatly.