Question on used AFR 185 head purchase
I'm in the slow process of building a 347 hydraulic roller engine for the street. It'll likely be EFI, and for sure be naturally aspirated. I've done a couple rebuilds on engines but never a build, so I'm new at this performance stuff.
I'm looking at a Craigslist ad for AFR 185 heads. The seller, who claims they were on his 850hp 331 race engine for seven years, says they have 5,000km on them, 58cc chambers, a 5-angle valve job (angles not specified), and Comp 400lb dual springs for hydraulic roller lifters. He says he upgraded the rocker studs to a longer ARP stud (not sure how long) for Magnum rockers. The heads are not decked.
He wants $1,200. I would assume that it's negotiable. This doesn't include rockers.
He later states that for an extra $300, he'll throw in Comp 400lb and 600lb dual springs (the 400lb set being an extra and the 600lb set being for solid roller lifters - or so he says), and Magnum 1.6:1 roller rockers.
Is this a good deal? Should I get the priced budged down? Is it even worth buying used? I want a hydraulic roller cam, so the 600lb set of springs would be useless to me, right? I for sure want the heads and the rockers. Is a 400lb spring pressure what I want though?
Anything else I should know?
Thanks to anyone that helps!