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?
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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?
806 is a 5.3 head. Why change. Newer 5.3 have 243/799 heads with flat top pistons.
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?Quote:
Originally Posted by kerrige
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 LsaQuote:
Originally Posted by kerrige
228 is. Big cam for a 5.3 and will require a good sized stall to run efficiently. At least 34-3600. I would say a 220 or 224 would be better. What sized truck and what gear ratio does it have? Any other plans such as spray or boost do you have for the build? More details helps a lot when picking a cam. The more we know the more help we canbe.
Well I'm going to build the motor first and trans I work at a trans shop I want to put it in a 72 novaQuote:
Originally Posted by kerrige
With 4.11s maybe idk yet
Oh if it's going in a Nova you can go a little bigger on the cam, but matching a good stall is important.
Quote:
Originally Posted by kerrige
Yeah so I guess a 3000 to 3500?