what is the compression ratio with AFR's
 

with the 205's what does it change the CR to?

I believe it is about 10.28 with the stock gasket.

CR Info....
 

Guys...

AFR 205 66 cc
Stock LS1 head 67 cc (AFR SLIGHTLY raises CR)
Stock LS6 head 65 cc (AFR SLIGHTLY lowers CR)

I think "Lady Redhawk's" calculation is spot on with a stock GM head gasket.

Thanks,
Tony M.

How far are you able to flat mill or angle mill the AFR castings down to?

I talked to a member of the AFR sales staff and he said that AFR wouldn't mill them past 60 CC's. Was just hoping to get your input.

Floyd.

AFR offers milling as an option (they also offer hollow stem valves and 921 springs). They recommend 59cc heads with a 347 for 11:1.

David

where is the cheapest place to get afrs from?

What kind of Head Gasket are you using? With a cometic I'm getting ~11.6:1

i dont know whatever kind i can use to get best PV clearance

anyone know what the best pricing on these is?

well i haven't checked every sponsors pricing on these but the ones i have all are priced at $2181.99 ... unless there's some kind of group buy or special i think everyone is sellin them for that price

is that with valves? i gotta get the valves too, futral was 2250 with valves

AFR 205cc LS1 Cylinder Heads with 66cc chamber assembled with 2.02" / 1.60" Valves, dual coil valve springs(.600" max lift), and titanium retainers. = $2181.99

hope that answers your question ;)

yes sir, thank you, where did you get that info from, which vendor

that was a copy and paste from thunder racing's website (www.thunderracing.com) but you can find it for that price also at speed inc (www.ls1speed.com) or texas speed (www.texas-speed.com) ... but you'll get the best deal from texas speed since they sell it for the same price and have free shipping ... here's a direct link, http://www.texas-speed.com/item_deta...ProductID=1257

awesome, thanks