My educated guess will be one afternoon for tear down and clean up, and one afternoon to put back on and lash and assemble.
This is on FieroChicks car. The valve seals are shot, the plenum is leaking. 2 broken off manifold bolts, and I suspect 1 or more burn valves due to driving around for a year with a cracked/badly leaking exhaust manifold.
So we are going to swap on my old 2.8 heads, mine have 1.6 roller tip rockers, comp valve springs, decked .010, minor port work, fresh valve grind, and a few other tweaks to make them good. Plus ported manifolds. She should see a noticeable gain in power from all this. Just the ported manifolds and 1.6 rockers should be worth 10-15 hp.
------------------
85GT 5spd ,93 Eldorado 4.9 Dual O2 Custom Chip, Archie Clutch. Custom Exhaust. MSD Everything 245/50/16's Not Your Average 4.9 Capt Fiero Com --- My Over View Cadero Pics
[This message has been edited by Capt Fiero (edited 05-19-2006).]