fuzzyfine

iTrader: (1)

Which would you suggest, Ported LS6 Heads or AFR 205 Heads. If you go with the LS6 heads do you get them polished? Is there a power difference? What are the advantages of going with one over the other.
Your help would be greatly appreciated

thanks :

DanZ28

iTrader: (5)

Not to a abrassive, I noticed this is your first post, I would suggest using the search button on this and you would find all the answers you need...

ArcticFormula

AFR

SlickVert

iTrader: (5)

AFR all the way

badpewter-z

iTrader: (4)

afr here as well
the extra torque is worth it

mike c.

iTrader: (1)

arf's here to. the search button is great,but you don't always find what you are looking for.

JZ'sTA

iTrader: (23)

On this topic you would have found more then your looking for.

6.0vette

I think i would depend on what your doing with the car.
A car that does mostly street action,definatly AFR, but
a drag monster would probably be better off with killer LS6
heads.Now worked AFR heads might be a different story,
although Tony says youll have no warranty if another machine
shop works them.

HAMRHEAD

iTrader: (8)

AFR heads compared to what, stock LS6 heads or Stage 2, Stage 3 LS6 heads?

jrp

iTrader: (16)

whats the application and cam?

Nate_Taufer

iTrader: (1)

ditto, what cam? i would rather run the gmpp cnc ported ls6 heads.

gaga

https://ls1tech.com/forums/showthrea...&highlight=afr

here ya go, i asked this 2 months ago.... a good read...

NASTE_SS

i would run the ls6 heads if they are ported by someone who knows what they are doing. i've seen ls6 heads flow 360 and that's alot better than any afr head i've seen.

1CAMWNDR

iTrader: (21)

At what lift and what port volume??

NASTE_SS

at .660-.700 somewhere in betwwen there and to give you the port volume i'd be getting myself in trouble with my teacher. i no enough details on them but nothing i'd want to share

SAM98WS6

Good ported LS6s will perform better than out of the box CNC AFR 205s...provided you get them done by a great porter..like Rapid or MTI.
To avoid mistakes get the AFRs and sleep better.

1CAMWNDR

iTrader: (21)

For some reason I do not see the need for flow numbers over .600" lift since most LS1 cams (especially those expected to have any street manners) do not have that much lift. Unless you are building a race only motor that will never see street time.
I say go with the AFR 205 and if you are loosing 10-20 cfm over some worked LS6 heads, enjoy the better torque that the small AFR ports have.

Big-DEN

Question is what works better with the intakes that are currently being used:

LSX, LS6 intake...

The AFR's don't seem to be doing bad at all and delivering some heavy numbers
for moderate camshaft configurations ( IE: 224@.05" )...