Head options, need input.
#1
TECH Resident
Thread Starter
Join Date: May 2002
Location: Fremont, CA
Posts: 829
Likes: 0
Received 0 Likes
on
0 Posts
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
Ok, i have a 99 SS with some totally jacked up heads, stripped bolts all over the place (ill never take it to that shop again).... Anyway, i just bought a set of used 01 heads complete. I plan on putting my springs and retainers on the new heads to handle my asa cam. I also plan on cleaning up the heads (obviously), and lapping the valves by hand. I might also do a little smoothing of the ports myself, nothing crazy. Since ill be taking my heads off, id like to get the best, if any, power gain i can get. What is the max i can shave/mill these heads and still use 7.400 stock length pushrods? And what will my compression ratio be then? What kind of HP gains will i see? Can i still run crappy 91 octane gas (only thing avail out here)... Any other opinions or suggestions welcomed! I wont be putting these heads on for at least a month or 2. But im getting the heads this week and i want to prep them the best i can. Thanks!
<small>[ March 02, 2003, 12:10 AM: Message edited by: RTCamaroSS ]</small>
<small>[ March 02, 2003, 12:10 AM: Message edited by: RTCamaroSS ]</small>
#2
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
The lift of your cam is going to really dictate how much you can mill them without P/V issues. Depending on that, I wouldn't go more than .30 and you may see a half point bump in compression tops.
#3
TECH Resident
Thread Starter
Join Date: May 2002
Location: Fremont, CA
Posts: 829
Likes: 0
Received 0 Likes
on
0 Posts
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
Im running the ASA hot cam, specs are 226/236 .525/.525 on a 110LSA. So its low lift, but high duration. Dunno if that matters. Im looking to keep my comp cams chrome moly pushrods i just bought, they are 7.400 stock length. I seem to remember someone telling me you can only mill .020 and still keep stock pushrods.. i need to confirm that. And see what gains ill get with milling it that much.
Trending Topics
#8
On The Tree
Join Date: Mar 2002
Location: Amarillo, Tx
Posts: 160
Likes: 0
Received 0 Likes
on
0 Posts
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
The shop that does your mill should check the clearance issues before they mill and let you know what can be done. I would get a good valve job and if it was me, run new valves, $160 and flow much better than stock.
Check your email.
Good Luck,
ERIC
Check your email.
Good Luck,
ERIC