Join Date: Jan 2015
Location: Injun Territory, 'Merica!
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SR blocks don't get restamped. Instead car builders and typically auction sellers, try to pass them off as original dealer installs, yet because these sellers have no paper trail, basically they are selling a "restored" Judge or RA car with a store bought block.
Original is ORIGiNAL
-Original born with correct coded dated engine block trumps all other alternatives, top value.
-Below that valuation, in a high value restoration, is typically where original same two letter coded blocks that are very close in date are in value.
-Next down the valuation scale, many don't want to admit it, but basically is where professionally resurfaced restamped correct font blocks fit in. Several providers of this service out there that their blocks appear totally original. May be frowned upon, but they are out there.
-Next, in many opinions, come the no paperwork SR blocks...worth more of course, if never been assembled but sprayed down years ago with Kano Weatherproof or wiped with cosmoline...and with fitted forged pistons (RAII-RAIV use)
Now, if one has a really desirable RA vehicle w/o the original block, AND there is original dealership and zone paperwork documenting the install of SRXXXXXX fitted engine block, the value of the vehicle is not hurt that bad. In the late '80's and early '90's I managed to pick up three SR 4bolt 400 fitted blocks, all still had fitted pistons and had come out of the Arlington parts distribution facility. I ended up trading each one of them off, the last about 10 years ago.
To answer original question, as a std bore loose SR 4 bolt 400 block, $1500, maybe more.