Milling LS6 Heads
02-13-2003, 09:57 PM
#2
TECH Resident
iTrader: (56)
Join Date: Jan 2002
Location: Bartlett, IL
Posts: 975
Likes: 0
Received 0 Likes
on
0 Posts
Re: Milling LS6 Heads I had mine decked between .050 and .060. Absolutely no problems with shorter pushrods. Chambers measured around 59cc which made my CR around 11.1- 11.2
<small>[ February 13, 2003, 10:00 PM: Message edited by: I8COBRA ]</small>
<small>[ February 13, 2003, 10:00 PM: Message edited by: I8COBRA ]</small>
02-14-2003, 05:36 PM
#3
TECH Addict
Re: Milling LS6 Heads I8Cobra, you must have a lot of chamber relief porting to only have 59cc after grinding that much. The set im doing was 64cc stock, with 2.02" and 1.6" installed and smoothing spark plug bump its at 62.5cc. .050" off these heads should produce 55cc chambers.
02-15-2003, 09:43 AM
#4
TECH Resident
iTrader: (56)
Join Date: Jan 2002
Location: Bartlett, IL
Posts: 975
Likes: 0
Received 0 Likes
on
0 Posts
Re: Milling LS6 Heads </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by LS1derfull:
<strong> I8Cobra, you must have a lot of chamber relief porting to only have 59cc after grinding that much. The set im doing was 64cc stock, with 2.02" and 1.6" installed and smoothing spark plug bump its at 62.5cc. .050" off these heads should produce 55cc chambers. </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Sorry, that was a typo. I meant to say .040-050 decked off. My valves are 2.00/1.55. No chamber relief porting done, theyre highly polished almost to a mirror shine but not ported. 3 different chambers were measured and they were measuring between 59-59.5cc.
<strong> I8Cobra, you must have a lot of chamber relief porting to only have 59cc after grinding that much. The set im doing was 64cc stock, with 2.02" and 1.6" installed and smoothing spark plug bump its at 62.5cc. .050" off these heads should produce 55cc chambers. </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Sorry, that was a typo. I meant to say .040-050 decked off. My valves are 2.00/1.55. No chamber relief porting done, theyre highly polished almost to a mirror shine but not ported. 3 different chambers were measured and they were measuring between 59-59.5cc.
