Generation III Internal Engine 1997-2006 LS1 | LS6
Sponsored by:
Sponsored by:

LS6 heads to AFR heads?

Old 05-07-2010, 12:50 PM
  #1  
12 Second Club
Thread Starter
iTrader: (14)
 
Sube's Avatar
 
Join Date: Nov 2003
Location: Kansas City, Missouri
Posts: 286
Received 0 Likes on 0 Posts

Default LS6 heads to AFR heads?

I'm currently putting together a forged 347 with a 235/243 .621”/.624” 111LSA +4 advance cam. My current mods are milled 61cc PRC LS6 heads, 90/90 fast, 1 ¾in longtubes, and 9in 3.89”S. I’m adding a UD pulley and YT rockers. My last cam was a MS3. Right now I might have the opportunity to pick up a set of 62cc AFR 205’s. The question I have is how much a benefit I would have to switching from my current heads? My CR sits at 11.2:1 with a set of .040 cometics and my -2cc pistons with the PRC’s. With the 205’s it would go to 11.06:1 so I would probably mill them to 61cc like my PRC’s. I just don’t want to spend the money if it’s not going to be that great of difference. Any help and opinions would be greatly appreciated.
Thx Rusty
Old 05-07-2010, 01:33 PM
  #2  
Launching!
 
427LS7HCI's Avatar
 
Join Date: May 2010
Posts: 274
Likes: 0
Received 1 Like on 1 Post
Default

Originally Posted by Sube
I'm currently putting together a forged 347 with a 235/243 .621”/.624” 111LSA +4 advance cam. My current mods are milled 61cc PRC LS6 heads, 90/90 fast, 1 ¾in longtubes, and 9in 3.89”S. I’m adding a UD pulley and YT rockers. My last cam was a MS3. Right now I might have the opportunity to pick up a set of 62cc AFR 205’s. The question I have is how much a benefit I would have to switching from my current heads? My CR sits at 11.2:1 with a set of .040 cometics and my -2cc pistons with the PRC’s. With the 205’s it would go to 11.06:1 so I would probably mill them to 61cc like my PRC’s. I just don’t want to spend the money if it’s not going to be that great of difference. Any help and opinions would be greatly appreciated.
Thx Rusty
You'll pick up much more low/mid range power with the AFRs


Thread Tools
Search this Thread

All times are GMT -5. The time now is 12:58 AM.