Did I max out my heads?? - LS1TECH

Go Back   LS1TECH > LS1-LS2-LS3-LS6-LS7 PERFORMANCE > Dynamometer Results & Comparisons
Log In 
Search


Dynamometer Results & Comparisons
Dyno Records | Dyno Discussion | Dyno Wars


Did I max out my heads??

Reply
 
Thread Tools Search this Thread
Old 09-25-2005, 09:08 AM   #1
10 Second Club
 
Trader Rating: 14
Join Date: Mar 2002
Location: Kansas City, KS
Posts: 2,893
Send a message via AIM to 383ss
Default Did I max out my heads??

I finally got my new cam installed and dyno'd. was expecting a ~10rwhp gain and the powerband moved up some...

blue line is old FMS 246/250 .632 110+4
red line is new FMS 253/261 .642 110+4

how did my power band not move up?? and why are they identical from 4500+? I'm guessing my heads are maxed out, but had not seen anyone post anything like it before.

my heads are 5.7L milled .031, 2.02 intake 1.57 exhaust.

flow #'s
lift; intake; exhaust
.100 70 54
.200 149 110
.300 218 154
.400 264 197
.500 286 222
.550 292 228
.600 293 233

Click the image to open in full size.



here it is with a 100 TNT wet shot

Click the image to open in full size.
__________________
99 Camaro, M6 SOLD
previously... 383 11:1; 10.75 @ 127, 1.47 60' 3450lbs
up in flames... 408 12.85:1, M6 10.52 @ 130 1.42; 10.12 @ 137 on a 100 shot. 3469 lbs

Silverado SS - 14.20 @ 93.1 2.08 60' SOLD

2011 Camaro 2SS, Auto
1985 IROC 305 Auto

Last edited by 383ss; 09-25-2005 at 10:03 AM.
383ss is offline   Reply With Quote
Old 09-25-2005, 12:58 PM   #2
TECH Junkie
 
Ben R's Avatar
 
Trader Rating: 0
Join Date: Aug 2002
Location: Fort Collins, CO
Posts: 3,726
Send a message via AIM to Ben R
Default

I think so.

I would recommend a set of ET Performance 240CC cylinder heads for your application. Let me know if you're interested. I can get you some pricing and availability information.
Ben R is offline   Reply With Quote
Old 09-25-2005, 01:59 PM   #3
10 Second Club
 
Trader Rating: 14
Join Date: Mar 2002
Location: Kansas City, KS
Posts: 2,893
Send a message via AIM to 383ss
Default

Quote:
Originally Posted by KingCrapBox
I think so.

I would recommend a set of ET Performance 240CC cylinder heads for your application. Let me know if you're interested. I can get you some pricing and availability information.

thanks, I had been emailing Craig @ ET Performance about them and what I need. I'll get in contact with you when I decide to order.
__________________
99 Camaro, M6 SOLD
previously... 383 11:1; 10.75 @ 127, 1.47 60' 3450lbs
up in flames... 408 12.85:1, M6 10.52 @ 130 1.42; 10.12 @ 137 on a 100 shot. 3469 lbs

Silverado SS - 14.20 @ 93.1 2.08 60' SOLD

2011 Camaro 2SS, Auto
1985 IROC 305 Auto
383ss is offline   Reply With Quote
Old 09-25-2005, 02:31 PM   #4
TECH Junkie
 
52172's Avatar
 
Trader Rating: 2
Join Date: Jul 2003
Location: Buellton Ca
Posts: 3,488
Default

550/535 are still some very stout numbers through ls1 castings!! I wonder what you would put down with the ET heads? Could pick up another 30 rwhp!
__________________
2000 Tpl Blk SS ,H/C w/ Full Bmr susp,Qa1 coil overs w/ MAC springs,Baer GT+ brakes,Forgeline wheels, Stage 5 cryogen treated T56 w/RPS dual disk carbon/carbon clutch, Midwest Fabed 9": Forged 348 w/Street Killer kit w/ TC76MPS. 750 RWHP Fuel System (pump ltd). 635rwhp 10lbs 91oct
97 6.5 3/4 TD Burb W/MODS
01 VW Golf TDI 50 MPG
52172 is offline   Reply With Quote
Old 09-25-2005, 03:45 PM   #5
TECH Junkie
 
Ben R's Avatar
 
Trader Rating: 0
Join Date: Aug 2002
Location: Fort Collins, CO
Posts: 3,726
Send a message via AIM to Ben R
Default

Quote:
Originally Posted by 383ss
thanks, I had been emailing Craig @ ET Performance about them and what I need. I'll get in contact with you when I decide to order.
Sounds good.
Ben R is offline   Reply With Quote
Old 09-25-2005, 04:48 PM   #6
10 Second Club
 
Trader Rating: 14
Join Date: Mar 2002
Location: Kansas City, KS
Posts: 2,893
Send a message via AIM to 383ss
Default

Quote:
Originally Posted by 52172
550/535 are still some very stout numbers through ls1 castings!! I wonder what you would put down with the ET heads? Could pick up another 30 rwhp!
I would expect to be close to 600rwhp. this is a hydraulic cam also.
the 265's flow 21 more at 400, 38 more at .500, and 58 more at .600 than mine.
__________________
99 Camaro, M6 SOLD
previously... 383 11:1; 10.75 @ 127, 1.47 60' 3450lbs
up in flames... 408 12.85:1, M6 10.52 @ 130 1.42; 10.12 @ 137 on a 100 shot. 3469 lbs

Silverado SS - 14.20 @ 93.1 2.08 60' SOLD

2011 Camaro 2SS, Auto
1985 IROC 305 Auto
383ss is offline   Reply With Quote
Old 09-25-2005, 05:09 PM   #7
TECH Junkie
 
Ben R's Avatar
 
Trader Rating: 0
Join Date: Aug 2002
Location: Fort Collins, CO
Posts: 3,726
Send a message via AIM to Ben R
Default

You could expect to see some rather large gains with a really set of cylinder heads. Those ET heads will flow 350 @ .650 with a 4.030 bore. With 50 more CFM of air you will see a VERY nice power increase.
Ben R is offline   Reply With Quote
Old 09-25-2005, 05:49 PM   #8
TECH Junkie
 
52172's Avatar
 
Trader Rating: 2
Join Date: Jul 2003
Location: Buellton Ca
Posts: 3,488
Default

I don't think I have seen anyone break 555 rwhp with a 408 ever!! Be the first one!
__________________
2000 Tpl Blk SS ,H/C w/ Full Bmr susp,Qa1 coil overs w/ MAC springs,Baer GT+ brakes,Forgeline wheels, Stage 5 cryogen treated T56 w/RPS dual disk carbon/carbon clutch, Midwest Fabed 9": Forged 348 w/Street Killer kit w/ TC76MPS. 750 RWHP Fuel System (pump ltd). 635rwhp 10lbs 91oct
97 6.5 3/4 TD Burb W/MODS
01 VW Golf TDI 50 MPG
52172 is offline   Reply With Quote
Old 09-25-2005, 06:04 PM   #9
TECH Junkie
 
BlueSix's Avatar
 
Trader Rating: 0
Join Date: May 2003
Location: its fucking cold
Posts: 3,052
Default

Quote:
Originally Posted by 52172
I don't think I have seen anyone break 555 rwhp with a 408 ever!! Be the first one!
N/A FMS 408ci Dyno & Video....577 RWHP!!!

It's been done (at least) once before, and that was through a very heavy drivetrain. I think it's kinda funny that the most powerful 408's come from FMS.
__________________
Quote:
I am not familiar with the concept of h-h. I did not learn my a-a b-b c-c's.
Quote:
Originally Posted by Vendetta
The end of that game just cost me a remote and a hole in the wall.
BlueSix is offline   Reply With Quote
Old 09-25-2005, 06:06 PM   #10
TECH Junkie
 
Ben R's Avatar
 
Trader Rating: 0
Join Date: Aug 2002
Location: Fort Collins, CO
Posts: 3,726
Send a message via AIM to Ben R
Default

It's all in the cylinder heads. Now that companies like ET offer kickass cylinder heads for large stroker engines I think we'll start to see more 550HP 408's and such.
Ben R is offline   Reply With Quote
Old 09-25-2005, 07:09 PM   #11
10 Second Club
 
Trader Rating: 14
Join Date: Mar 2002
Location: Kansas City, KS
Posts: 2,893
Send a message via AIM to 383ss
Default

Quote:
Originally Posted by 52172
I don't think I have seen anyone break 555 rwhp with a 408 ever!! Be the first one!
highest hydraulic that FMS has done did 568. most seem to do in the 520-530 range.

I'm going to have these heads hogged out and put in 2.08 valves and see what it does. then I'll go to some ET heads
__________________
99 Camaro, M6 SOLD
previously... 383 11:1; 10.75 @ 127, 1.47 60' 3450lbs
up in flames... 408 12.85:1, M6 10.52 @ 130 1.42; 10.12 @ 137 on a 100 shot. 3469 lbs

Silverado SS - 14.20 @ 93.1 2.08 60' SOLD

2011 Camaro 2SS, Auto
1985 IROC 305 Auto
383ss is offline   Reply With Quote
Old 09-25-2005, 07:55 PM   #12
Banned
 
Nate_Taufer's Avatar
 
Trader Rating: 1
Join Date: Nov 2004
Location: North of Seattle
Posts: 2,057
Default

Quote:
Originally Posted by BlueSix
N/A FMS 408ci Dyno & Video....577 RWHP!!!

It's been done (at least) once before, and that was through a very heavy drivetrain. I think it's kinda funny that the most powerful 408's come from FMS.

I believe he is probably talking about pump gas. 14:1 compression 280+ duration cam on c16 isn't really all that streetable unless you own a race track and drive to work

Nate
Nate_Taufer is offline   Reply With Quote
Old 09-25-2005, 09:07 PM   #13
TECH Junkie
 
52172's Avatar
 
Trader Rating: 2
Join Date: Jul 2003
Location: Buellton Ca
Posts: 3,488
Default

Thats right I should have worded it differently, but I was referring to pump gas hydraulic roller cams.
__________________
2000 Tpl Blk SS ,H/C w/ Full Bmr susp,Qa1 coil overs w/ MAC springs,Baer GT+ brakes,Forgeline wheels, Stage 5 cryogen treated T56 w/RPS dual disk carbon/carbon clutch, Midwest Fabed 9": Forged 348 w/Street Killer kit w/ TC76MPS. 750 RWHP Fuel System (pump ltd). 635rwhp 10lbs 91oct
97 6.5 3/4 TD Burb W/MODS
01 VW Golf TDI 50 MPG
52172 is offline   Reply With Quote
Old 09-25-2005, 09:18 PM   #14
TECH Junkie
 
52172's Avatar
 
Trader Rating: 2
Join Date: Jul 2003
Location: Buellton Ca
Posts: 3,488
Default

why would you want to put more money into your ls1 heads when you can put that money towards the new ET heads?
__________________
2000 Tpl Blk SS ,H/C w/ Full Bmr susp,Qa1 coil overs w/ MAC springs,Baer GT+ brakes,Forgeline wheels, Stage 5 cryogen treated T56 w/RPS dual disk carbon/carbon clutch, Midwest Fabed 9": Forged 348 w/Street Killer kit w/ TC76MPS. 750 RWHP Fuel System (pump ltd). 635rwhp 10lbs 91oct
97 6.5 3/4 TD Burb W/MODS
01 VW Golf TDI 50 MPG
52172 is offline   Reply With Quote
Old 09-25-2005, 10:41 PM   #15
10 Second Club
 
Trader Rating: 14
Join Date: Mar 2002
Location: Kansas City, KS
Posts: 2,893
Send a message via AIM to 383ss
Default

Quote:
Originally Posted by 52172
why would you want to put more money into your ls1 heads when you can put that money towards the new ET heads?
because I can.
__________________
99 Camaro, M6 SOLD
previously... 383 11:1; 10.75 @ 127, 1.47 60' 3450lbs
up in flames... 408 12.85:1, M6 10.52 @ 130 1.42; 10.12 @ 137 on a 100 shot. 3469 lbs

Silverado SS - 14.20 @ 93.1 2.08 60' SOLD

2011 Camaro 2SS, Auto
1985 IROC 305 Auto
383ss is offline   Reply With Quote
Old 09-26-2005, 12:23 AM   #16
9 Second Club
 
ONEBADWS6's Avatar
 
Trader Rating: 22
Join Date: Dec 2001
Location: Chicago
Posts: 1,474
Default

I'm looking forward to the E.T heads, but the question is is what intake are we going to use to get all the cfm into the motor? A ported FAST 90 is good for 284cfm, a ls6 is good for 260cfm. So whats the point of 350cfm if we'll never see it?
__________________
402 LS2, 13-1 compression, EPS Cam, TEA TFS 245's and custom Super Vic intake.
ONEBADWS6 is offline   Reply With Quote
Old 09-26-2005, 07:50 AM   #17
TECH Junkie
 
52172's Avatar
 
Trader Rating: 2
Join Date: Jul 2003
Location: Buellton Ca
Posts: 3,488
Default

wait for the ET manifold I guess should be at the PRI show. Coming out next year. Or buy ET's ls7 heads and run the ls7 intake.
__________________
2000 Tpl Blk SS ,H/C w/ Full Bmr susp,Qa1 coil overs w/ MAC springs,Baer GT+ brakes,Forgeline wheels, Stage 5 cryogen treated T56 w/RPS dual disk carbon/carbon clutch, Midwest Fabed 9": Forged 348 w/Street Killer kit w/ TC76MPS. 750 RWHP Fuel System (pump ltd). 635rwhp 10lbs 91oct
97 6.5 3/4 TD Burb W/MODS
01 VW Golf TDI 50 MPG
52172 is offline   Reply With Quote
Old 09-26-2005, 11:06 AM   #18
10 Second Club
 
Trader Rating: 14
Join Date: Mar 2002
Location: Kansas City, KS
Posts: 2,893
Send a message via AIM to 383ss
Default

Quote:
Originally Posted by ONEBADWS6
I'm looking forward to the E.T heads, but the question is is what intake are we going to use to get all the cfm into the motor? A ported FAST 90 is good for 284cfm, a ls6 is good for 260cfm. So whats the point of 350cfm if we'll never see it?
good point.
__________________
99 Camaro, M6 SOLD
previously... 383 11:1; 10.75 @ 127, 1.47 60' 3450lbs
up in flames... 408 12.85:1, M6 10.52 @ 130 1.42; 10.12 @ 137 on a 100 shot. 3469 lbs

Silverado SS - 14.20 @ 93.1 2.08 60' SOLD

2011 Camaro 2SS, Auto
1985 IROC 305 Auto
383ss is offline   Reply With Quote
Old 09-26-2005, 11:27 AM   #19
LS1 Tech Administrator
 
Patrick G's Avatar
 
Trader Rating: 14
Join Date: Nov 2001
Location: Victoria, TX
Posts: 8,230
Default

Quote:
Originally Posted by ONEBADWS6
I'm looking forward to the E.T heads, but the question is is what intake are we going to use to get all the cfm into the motor? A ported FAST 90 is good for 284cfm, a ls6 is good for 260cfm. So whats the point of 350cfm if we'll never see it?
Better cylinder heads will make more power, even with a restrictive intake manifold. Why do you think NASCAR restrictor plate motors run the highest flowing cylinder heads they can find? Because they STILL make more power.
__________________

2013 Corvette Grand Sport A6 LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Cam Motion blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph at US Half Mile.
2009.5 Pontiac G8 GT 6.0L, A6, AFR 230v2 heads. 506rwhp/442rwtq. 11.413 @ 121.29mph 1/4 mile, 168.7mph Texas Mile
2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE, 183.092 Texas Mile
2014 GMC Yukon Denali XL 6.2L Air Raid MIT, tuned.
LS1,LS2,LS3,LS7,LT1 Custom Camshaft Specialist For custom camshaft help press here.
Custom LSX tuning in person or via email press here.
Patrick G is offline   Reply With Quote
Old 09-26-2005, 11:32 AM   #20
TECH Junkie
 
Ben R's Avatar
 
Trader Rating: 0
Join Date: Aug 2002
Location: Fort Collins, CO
Posts: 3,726
Send a message via AIM to Ben R
Default

Quote:
Originally Posted by Patrick G
Better cylinder heads will make more power, even with a restrictive intake manifold. Why do you think NASCAR restrictor plate motors run the highest flowing cylinder heads they can find? Because they STILL make more power.
Just what I was going to say...
Ben R is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are Off


 

All times are GMT -5. The time now is 12:49 PM.


Powered by vBulletin® Version 3.8.7 AC2
Copyright ©2000 - 2015, Jelsoft Enterprises Ltd.
Advertising - Terms of Service - Privacy Statement - Terms of Service - JOBS
Emails & Contact Details