[n20ta2]

I brought my 400 to my local machine shop with a used 461 rotating assembly. Here is what he did:
Hot tank block and check for cracks.
Turn crank, balance assembly. Install supplied arp main studs and alighn hone mains.Bore bock .30 over and torque plate hone with my torque plate.
Install cam bearings.
Install kauffman lifter brace.
File fit hastings rings for nitrous.
Install freeze plugs.
Blueprint assembly and assemble short block using my supplied king race bearings.
So my machine shop bill was 2800 labor and I supplied about 3000 in parts not including heads or gaskets for a total of 5,800.00. I'm using kauffman highports so your iron heads will need machining as well. I think if your using your rotating assembly (minus pistons) and heads a fully assembled engine via machine shop would be between 4500-6000. That's basically what it should cost as long as you don't have any major issues.