Todd,

That's what the little winking smiley face is there for at the header. We made that transaction over 8 months ago, I do believe. I was just messing around.

 

The 6.0 heads have LS6 style ports, so they outflow the 5.3 heads by quite a bit. They are a good gain on a 5.7 because the 5.3 has the same ports but smaller chamber. I would say the best benefit would be some worked 6.o heads (milled, ported, etc).

 

here's some good reading on the subject. Link

 

Give me a break. TEA shouldn't be the one asking questions.

Does cross sectional area have anything to do with performance... They don't know this yet?

Try reading the following link. That attempt to knock AFRs small, efficient ports is not worth your time. A shitload of various dynos proves what?
Quality of air

This isn't aimed at you Zippy but, this is just another reason why flow numbers; like dyno numbers, don't mean ****.

 

i wouldn't dare compare an AFR head to a stock ported anything gm head. my point is that the 5.3L head with some mild work puts down nice numbers for the price and can be a gain over stock 6.0L heads. when you're scrolling through look at the track times as well as dyno numbers. at this point your best bet would be L33 heads if you could find them for anywhere near the same price.

 

I was just refering to stock heads. I wouldnt doubt a nicely done set of 5.3 heads would be nice. But not stockers on a 6.0.

 

ok, i see your point fully now. i agree with you. if i were going to go through all the trouble to swap heads i sure wouldn't put 5.3 heads on in stock form. they would lose power i think over the 6.0L head.

 

On a 6.0 motor Im left wondering which set of heads would produce more. Obviously 6.0 would be better for FI but say an NA setup with a set of stage 3 5.3 heads with larger valves I think with the increased velocity would overcome the 6.0 heads ability to flow slightly higher numbers.

Deckhand I think a set of stage 3 5.3 heads on a 6.0 would perform well in an NA setup.
I would just get ready for alot of tuning the air would be acting competlely different. Im just now getting my ve table and lt/stft's dialed in with the modifications Ive made to my heads and intake taken me 2 weeks to learn it and get it right.

 

Thats the part that sucks right there!!! The tuning is the fun part.

 

You can say that again Ive been obsesed with HP tuners ever since I got it, I love it and I hate it.