799's v 853 ported polished and milled
#1
TECH Fanatic
Thread Starter
iTrader: (9)
Join Date: Apr 2012
Location: Georgetown, Tx
Posts: 1,053
Likes: 0
Received 0 Likes
on
0 Posts
799's v 853 ported polished and milled
Ok, guys I just bought my first Z06 Friday and I would like some advice from LS engine experts on my heads. The car I bought has 853's on it that have been stage 2 ported and polished and milled .015. The car has a pat G spe'd cam .230/.230 .598/.608.
I already have a set of stock 799's and was going to port and polish them and possibly Mille them.
Here are my questions:
1. Is it worth the expense of porting and polishing the 799's?
2. What kind of gains if any will I have from p&p the 799?
3. Should I mill the 799's? If so, what is your recommendation on milling?
I already have a set of stock 799's and was going to port and polish them and possibly Mille them.
Here are my questions:
1. Is it worth the expense of porting and polishing the 799's?
2. What kind of gains if any will I have from p&p the 799?
3. Should I mill the 799's? If so, what is your recommendation on milling?
#2
TECH Resident
iTrader: (66)
Join Date: Oct 2008
Location: NC
Posts: 793
Likes: 0
Received 0 Likes
on
0 Posts
The 799's will definitely out flow the 853's ported and polished. THe expense is worth it if you are seeking every possible horsepower you can get. You could cut cost by doing the labor yourself if possible.
#3
#5
11 Second Club
iTrader: (2)
This right here is the only advise I'd give for your 799 castings.....
http://www.advancedinduction.com/LSX...cGMLS2Head.php
http://www.advancedinduction.com/LSX...cGMLS2Head.php
#6
TECH Fanatic
Thread Starter
iTrader: (9)
Join Date: Apr 2012
Location: Georgetown, Tx
Posts: 1,053
Likes: 0
Received 0 Likes
on
0 Posts
This right here is the only advise I'd give for your 799 castings.....
http://www.advancedinduction.com/LSX...cGMLS2Head.php
http://www.advancedinduction.com/LSX...cGMLS2Head.php
That's all I needed!
Going to the P&P the 799's
Trending Topics
#8
TECH Fanatic
iTrader: (7)
Ok, guys I just bought my first Z06 Friday and I would like some advice from LS engine experts on my heads. The car I bought has 853's on it that have been stage 2 ported and polished and milled .015. The car has a pat G spe'd cam .230/.230 .598/.608.
I already have a set of stock 799's and was going to port and polish them and possibly Mille them.
Here are my questions:
1. Is it worth the expense of porting and polishing the 799's?
2. What kind of gains if any will I have from p&p the 799?
3. Should I mill the 799's? If so, what is your recommendation on milling?
I already have a set of stock 799's and was going to port and polish them and possibly Mille them.
Here are my questions:
1. Is it worth the expense of porting and polishing the 799's?
2. What kind of gains if any will I have from p&p the 799?
3. Should I mill the 799's? If so, what is your recommendation on milling?
#9
TECH Fanatic
Thread Starter
iTrader: (9)
Join Date: Apr 2012
Location: Georgetown, Tx
Posts: 1,053
Likes: 0
Received 0 Likes
on
0 Posts
Absolute Speed did the heads. I'm not sure of the runner size or the valve sizes, but they are running new Rev SS valves. I would assume the valves would be 2.02" / 1.55" but you know what they say about assuming.
They have been milled .015, which I think puts me at about stock LS6 243 compression of 10.5:1. But again I'm not sure.
They have been milled .015, which I think puts me at about stock LS6 243 compression of 10.5:1. But again I'm not sure.
#10
TECH Senior Member