Advanced Induction 226cc CNC work
You pay AI in the hood of $1200 for just porting + Heads.
TSP give you porting, springs, larger valves for $1600 and that includes heads!
TSP does some great work. their older heads may have not been the best, but they have improved so much over the last year and a half. they are a great set of heads for the price they sell them for.
Nice pics man. Care to give a prediction after retune ???? previous runs were
in the .70-.90 range ???? That thing should start at 50s...perhaps high 30s
with chilly air. GL2ya
in the .70-.90 range ???? That thing should start at 50s...perhaps high 30s
with chilly air. GL2ya
Launching!
Joined: May 2010
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I have the new 799s and TSP mentioned the slight roughness in the chambers actually makes them flow better and keep compression up.
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From: BFE
, snake juice cures all ails as well. 
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From: Turnin' Wrenches Infractions: 005
I don't ring it out much on the shifts. I shifted at one point at 6200 and I think that was about peak. I started shifting at 6500 and that felt much better. Power had stopped building but was still there. I honestly think there wouldn't be a whole lot to gain going over 6500. The cam has some advance ground in so its got excellent midrange power.
Texas Speed should NEVER mention anything close to roughness makes them flow better. If you were told that, I apologize! We do not cut the chambers because we want to keep the compression up on these heads (extra milling to break even on compression also kills clearance).
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Launching!
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Texas Speed should NEVER mention anything close to roughness makes them flow better. If you were told that, I apologize! We do not cut the chambers because we want to keep the compression up on these heads (extra milling to break even on compression also kills clearance).
So is it better to have them smooth or rough??
We do have a program that will cut the chambers, but again don't do it because we want the compression. The performance increase on the 243/799 castings from doing chamber work is fairly small....on the 5.3L heads though, they're chambers are bad enough and shrouded with 2.02"/1.57" valves that we really have to cut them.
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Launching!
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We do have a program that will cut the chambers, but again don't do it because we want the compression. The performance increase on the 243/799 castings from doing chamber work is fairly small....on the 5.3L heads though, they're chambers are bad enough and shrouded with 2.02"/1.57" valves that we really have to cut them.
What's a small increase, 10hp??
Nowhere near 10hp.
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From: BFE
Even a 5 hp increase by paying attention to details is substantial. That is about 12% increase (from the 40 rwhp a head swap would make).
Chambers do not really need to be completely gutted but some attention to plug boss and de-burring any potential hot spot candidates can go a long way.
Chambers do not really need to be completely gutted but some attention to plug boss and de-burring any potential hot spot candidates can go a long way.