GM Engine & Exhaust Performance EFI | GEN I/GEN II/GEN III/GEN IV Engines |Small Block | Big Block |

head work?s need good advice

Thread Tools
 
Search this Thread
 
Old Feb 27, 2006 | 11:16 AM
  #1  
Thread Starter
TECH Resident
iTrader: (36)
 
Joined: Feb 2005
Posts: 761
Likes: 0
From: Texarkana, AR
Default head work?s need good advice

hey guys, im wanting to do some work to the heads on my truck. my goal is to get into the 12's without headwork and do it n/a. but whether i do or not, i still want to do headwork later. so what all do i need to do. i know a good 5 angle valve job and some mild port and polishing, but how much should i get them milled. i am going to have flyer do the tuning for me so he can adjust the timing to compensate for the raised cr from milling. but i just would like to know any other tips that i need to do while i have them worked on. thanks

and this will strictly be for racing, im f*cking addicted!
Reply
Old Mar 1, 2006 | 01:13 PM
  #2  
Thread Starter
TECH Resident
iTrader: (36)
 
Joined: Feb 2005
Posts: 761
Likes: 0
From: Texarkana, AR
Default

what nobody has any info?
Reply
Old Mar 1, 2006 | 02:55 PM
  #3  
02sierraz71_5.3's Avatar
TECH Junkie
iTrader: (2)
 
Joined: Oct 2004
Posts: 3,473
Likes: 1
From: Cornelius, NC
Default

Depends on the cam you plan on using as too how much I would mill. If I had to do it again I would of taken the same .050 and then dropped another .010 with a thinner gasket. I would shoot for around 11:1 scr on a cam with around 220 duration and no more than .56x lift, 7.5:1 DCR With full exhaust, CAI, stock intake and tune I would expect 340 rwhp from a 2wd

Last edited by 02sierraz71_5.3; Mar 1, 2006 at 03:58 PM.
Reply
Old Mar 1, 2006 | 04:41 PM
  #4  
Thread Starter
TECH Resident
iTrader: (36)
 
Joined: Feb 2005
Posts: 761
Likes: 0
From: Texarkana, AR
Default

i will be using the cam in my sig. how much cr can i go until i start running into problems with 93 octane. and will i have any problems with piston to valve clearance when taking .50 off. also what is DCR that you referred to? sorry i dont know all of the lingo.
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
ARC
GMT 800 & Older GM General Discussion
57
Feb 21, 2022 10:54 AM
The_W
GM Engine & Exhaust Performance
1
Oct 28, 2015 09:00 PM
Castro45
GM Engine & Exhaust Performance
24
Jul 31, 2015 07:13 PM
4B11T
INTERNAL ENGINE MODIFICATIONS
2
Jul 13, 2015 03:48 PM
Nimoryan
GMT 800 & Older GM General Discussion
0
Jul 5, 2015 03:50 PM




All times are GMT -5. The time now is 09:55 AM.