The head starts at $2940.00 for the basic "Stage 1" (i.e. steet job) and goes up from there. "Stage 2" goes for $3320.00, and it's for a hot street vehicle (or street-strip engine). Then there's the top-of-the-line "Stage 3" build that sells for $3650.00. That's pretty much for all out, extremely hot, drag-strip only engines.
They claim on their website to have produced over 300 hp and 300 ft./lbs of torque in a 250 built with this head, using EFI. I'm guessing a build like that would run in excess of $7000 easily, by the time you fully dress it out and get the engine turn key.
If money is no object, go for it. I love the inline stuff, and built a good running 292 with the help of advice from this site. But saving money and time are most important now; so on my next engine, I'm spending half $7000 and getting 100 more
streetable horses from a 383 stroker.
Or, to show you your options, you can get ten less HP than the Sissell engine in a brand new (not rebuilt) small block that runs on low octane fuel, comes with a 1 year warranty, and fully dress it out for less than the cost of the basic Sissell head.
http://www.chevy350engines.com/ce22.html Take care.
-magic mike-
They were around $4,000 and perhaps, "out of budget" for most folks etc.