Thread: 1979 350 Chevy Build ?

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Originally Posted by tango

I did think I could do this because I had a set of #186 fuelly heads that were re-done Well I marked and removed all the Valves to do some pocket porting . And what did I find ? When the machine shop in-stalled steel valveguides . They cracked just about every guide boss They ruined a good set of fuelly heads with the front bolt holes . And they put them together that way I don't know what shop did this . They came off a 355 rebuilt never run engine.

when they put in new guides they drill out the old and press in new. you should call and talk to someone at a machine shop to find out if those heads are really ruined.

Originally Posted by speedy55779

when they put in new guides they drill out the old and press in new. you should call and talk to someone at a machine shop to find out if those heads are really ruined.

Dont know who or what shop did this . Bought that 355 long block from an old guy that had it in a bag since 1994 . I do think some of the machine shops use the air hammer way of pushing the guides in . And there is no way to save the heads now I like the BB pump they in-stalled ? At first when I had that engine on the stand I could not figger out why it would not turn all the way around . The crank was just hitting that BB pump ?? This is that engine with the heads off . 30 over dished pistons ?