G5X-3 on 112, PP Stage II LS6 w/59cc #'s inside
02-28-2004, 01:03 PM
#21
TECH Fanatic
Thread Starter
Join Date: Mar 2003
Location: La Porte, TX
Posts: 1,839
Likes: 0
Received 0 Likes
on
0 Posts
Just got some more tuning done. The car seems to be running a lot stronger, I'm no longer having the weird shifting issues that I was having, and the cold startup problems with reverse seem to be fixed. Jayson went ahead and claibrated the speedo for the 3.73 gears that I will be installing tomorrow, and I went ahead and ordered some LCA's and relocation brackets. I would like to thank Jayson for taking the time to help me out today with the issues I had. I will have more track numbers for you guys next Sunday if the weather holds up.
Matt
Matt
02-29-2004, 02:22 PM
#23
TECH Junkie
Join Date: Jan 2002
Location: At the office
Posts: 3,015
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by Country Boy
Youre also talking a standard off the shelf CNC head (means all heads are the same) as opposed to a custom ported set of heads.
JFM made about 430rwhp with absolute heads on his auto, but with a g5x2 cam through full exhaust....
I'm sure he would have made 440rwhp with a g5x3, but regardless, patriot #'s with a CNC head seem to be inline with this absolute head?
Cammin, these heads seem to be making good power when they aren't having problems. Power doesn't seem to be in question with these heads (when done right), quality is.
Last edited by verbs; 02-29-2004 at 02:29 PM.
02-29-2004, 05:52 PM
#25
BTW IMO
CNC'd heads they are not always exactly the same. Core shift can vary from casting to casting or even port to port. Blending is done by hand on both CNC'd and hand ported heads. Terry also mentioned he does a little hand touch up on the exhaust on the PP LS6 style heads. Due to those factors CNC isn't always exactly the same with the factory heads were all working with. This can be why CNC'd heads can have some variances in them.
CNC'd heads they are not always exactly the same. Core shift can vary from casting to casting or even port to port. Blending is done by hand on both CNC'd and hand ported heads. Terry also mentioned he does a little hand touch up on the exhaust on the PP LS6 style heads. Due to those factors CNC isn't always exactly the same with the factory heads were all working with. This can be why CNC'd heads can have some variances in them.
02-29-2004, 08:57 PM
#26
Originally Posted by verbs
JFM made about 430rwhp with absolute heads on his auto, but with a g5x2 cam through full exhaust.... but regardless, patriot #'s with a CNC head seem to be inline with this absolute head?
Shawn
02-29-2004, 09:57 PM
#27
Originally Posted by verbs
27rwhp is a pretty big difference regarless if one head is off the shelf and the other is hand ported IMO....
JFM made about 430rwhp with absolute heads on his auto, but with a g5x2 cam through full exhaust....
I'm sure he would have made 440rwhp with a g5x3, but regardless, patriot #'s with a CNC head seem to be inline with this absolute head?
Cammin, these heads seem to be making good power when they aren't having problems. Power doesn't seem to be in question with these heads (when done right), quality is.
JFM made about 430rwhp with absolute heads on his auto, but with a g5x2 cam through full exhaust....
I'm sure he would have made 440rwhp with a g5x3, but regardless, patriot #'s with a CNC head seem to be inline with this absolute head?
Cammin, these heads seem to be making good power when they aren't having problems. Power doesn't seem to be in question with these heads (when done right), quality is.
Well, the cam stays the same and the only mechanical varible is the heads, so... draw your own conclusions
03-01-2004, 07:13 AM
#28
Nice numbers...and those ET Streets prolly cost you some power on the dyno. My old car only dynoed 400rwhp but ran 122 through the traps (more like 460hp). But when I dynoed and tuned the car, it was through a nitrous converter, 12-bolt, ET Streets, etc.
Point is, the car's setup can affect the dyno numbers.
Point is, the car's setup can affect the dyno numbers.
