They're a pair of ported 853's (centerbolt) that are fresh. Since they've been worked, I wouldn't be very concerned about the casting number. People seem to put too much faith in the casting number. I've been sitting on them for a bit and had full intentions of running them but I decided I better go with a thicker deck head for turbo. They're hand ported by a board member here by the name of Ben Theriot, or Studytime. They've been milled about .005" or .010" (honestly can't remember, Ben might remember), new valve seals, dual Crane .650" springs, and stock size valves. I didn't save the flow numbers he sent me when I bought them but they flow a solid 295 at .600", with good average flow. I loaded the numbers into Excel with AFR 205's and Patriot stage II's and these rivaled both in terms of area under the curve. I just started thinking I would hate to puke head gaskets and push water at high PSI. If I had a h/c motor I would definitely have these on here.

$825 shipped money order, cashier's check, or cash

 

BTW, PM me first as I might not be back over here for a bit.

 

Bump, make an offer.

 

Bump. Make an offer.

 

Bump.