moding/changing 5.3l ideas help?

[vtrey]

I'm wanting to get a 5.3l complete with computer take stock heads off and change them with a set of 806 heads but if I do that it would lower my compression so I was thinkin maybe run 4.8 pistons and maybe thinner gasket? Good idea?

[GraniteBlueNNBS]

806 is a 5.3 head. Why change. Newer 5.3 have 243/799 heads with flat top pistons.

[kerrige]

806 is actually the early LS1 heads. They aren't anything special. However swapping to 243s and 4.8 pistons would be a great option. Add a good 40hp with a good tune.

[vtrey]

806 is actually the early LS1 heads. They aren't anything special. However swapping to 243s and 4.8 pistons would be a great option. Add a good 40hp with a good tune.

Well I have 806 already thats why I asked what about 241 heads?

[kerrige]

241s are about the same. Again going to lower compression with out any significant gains in flow.

[vtrey]

241s are about the same. Again going to lower compression with out any significant gains in flow.

Ok so ill look for some 243 now a cam? Would a 228r with a 112 Lsa