What heads are good for 5.3L build. Ive looked and cant find info

[jbauto]

I have a 2000 silverado with the 5.3 im going to rebuild. What are some good cheap heads that can be lightly worked and make good power with ?

Ive searched and can not find anything. I hear LS6 heads and all but what else?

[oleshifty]

if motor is staying n/a, get some 862's. if you're going with a turbo/blower/nawwwws, get some 243s.
862s are highest compression heads, i have a set i'm getting a 5 angle valve job on, milled for higher compression, and ported/polished...hope to have the gains up within a couple months. still at machine shop

[jbauto]

what are the 862's off of ?

[oleshifty]

4.8's, 5.3's were a couple castings used. several will work, 862's seem easiest to find

[jbauto]

Weird i just went out to to my 99 silverado and it has a 5.3 with 862 heads. Are these the same 862 heads?

[o2camaross]

yes they are

[jbauto]

so these 862 heads with a mild port clean up would do well for a 400hp ish build?

[oleshifty]

depending on cam...definitely.

I'm hoping for numbers real close to those

[Botlfed]

if motor is staying n/a, get some 862's. if you're going with a turbo/blower/nawwwws, get some 243s.
862s are highest compression heads, i have a set i'm getting a 5 angle valve job on, milled for higher compression, and ported/polished...hope to have the gains up within a couple months. still at machine shop

speaking of which went by today he's got em aall cleaned up, his compressor went down and his new one arrives tomorrow he said he's gonna put a few hours in on em this weekend

so these 862 heads with a mild port clean up would do well for a 400hp ish build?

ive got P&P 862s.....but i dont make 400 hp

[jbauto]

Trying to find more info on these head.

Whats some budget wise mods to do on these heads. Valves and springs.

Goals are to make 300-350whp now in this motor. via over haul ,ported out heads,bigger tb, small to mild cam, long tube headers and exhaust and intake. Im not sure if im dreaming here

any advise?