Motor rebuild question

[BadForm]

Are the '96+ Vortec blocks similar enough to be a drop in replacement?

The reason I ask is that they seem to be cheap enough that it would make sense to buy a whole motor, and rebuild the bottom end of that engine while I still drive the truck around, then swap and save the original engine for later.

Or should I just hunt down a set of heads, and an earlier block (that doesn't make as much sense to me somehow...)

Thanks!

 

[Falco]

Read this for example:

http://syty.net/phpBB2/viewtopic.php?t=15032

To summarize, get the late model heads and an older block. If the older block not from a SyTy you should change the caps... :-? You should also redill/retap your Vortec heads and modify your intake to be able to use the new heads.

HTH,