Engine ?

[Mark A.]

Hi, new to the site I`m always reading the posts I just have`nt posted a question on here until now since I came across a motor that I`m not sure about so I thought I would ask here.

Heres the info the block number is 3963512 the date on it is G3070 also on the front of the block is HI-PER an by the oil filter it reads HI-PERF PASS

The heads number is 3994026 the date on them is E1071 they are iron they also say HI-PERF

There is no VIN on the block could this be a over the counter block or some warranty block? It also has 4 bolt mains on it. This would`nt be a LS6 would it? Any ideas?

Thanks Mark