does anyone know if an l05 truck motor is internal or external balanced? and what are the lt1's balance

 

Like all Chevy small block V8s except the 400, they are internally balanced.

Like all 86-up (1-pc RMS) small block Chevy V8s, the rearmost bit of internal balance weight is mounted on the flywheel, and all of them have the same amount of internal weight mounted out there.

Since they are all the same, and there is so little understanding of what "internal" balance means vs "external" (which has NOTHING WHATSEVER to do with which side of the oil seal the weight is on), avoid the words "internal" and "external" altogether. They do nothing but cause confusion. The operative concept here is "stock"; which is the same for all of them.

 

so would the flywheel off a lt1 t56 work with my engine if im mating it with a t56?

 

If the LO5 is from an 86+ truck, yes, use the whole clutch assembly

 

ok good cuz i didnt want to put it all together and have a balance problem. thanks