yep I had no problems on my old 86 astro 4.3 taking heads off I think its a bit tighter then S 10 .only reason I took my heads off is I thought I had a head gasket leaking but it was a cracked # 2 cylinder . $300 .00 I put a used engine in it . got 750,000 kilometres ( i think that works out to 450,000 miles ) out of it before body gave out on it .If I would of flushed the block on a regular basis #2 cyl would not have cracked . it got blocked in water passage over time. Buds right they last forever and thats why I bought 2 more astros the 4.3 engines are tough .