LSInnovations
10-13-2007, 02:14 AM
Tuned a C6 Z06 /w Kooks, mild 23x/23x cam and intake
560 rwhp, 485 rwtq....
the end :)
560 rwhp, 485 rwtq....
the end :)
Dynamometer Results & Comparisons - LS7 - cam/headers/intake - 560 rwhp
View Full Version : LS7 - cam/headers/intake - 560 rwhp
allngn_c5
10-13-2007, 07:03 AM
Tuned a C6 Z06 /w Kooks, mild 23x/23x cam and intake
560 rwhp, 485 rwtq....
the end :)
Are we talking about at 230/230 cam or a 238/238 cam ??
Either way with 427 (428) cubic inches and such a mild cam by todays standards you made some impressive Rwhp and Rwtq !!
Do you have a graph ?? I'd like to see your stump pulling torque from 2800 rpms. With my h/c bolt on ls1 346 I had a whopping 360 rwtq at 2800 rpms. I'd expect you to be 400 rwtq or more. Wonder what she'd have made with one of those 24x/25x cams that some people are using. GREAT RESULTS !
560 rwhp, 485 rwtq....
the end :)
Are we talking about at 230/230 cam or a 238/238 cam ??
Either way with 427 (428) cubic inches and such a mild cam by todays standards you made some impressive Rwhp and Rwtq !!
Do you have a graph ?? I'd like to see your stump pulling torque from 2800 rpms. With my h/c bolt on ls1 346 I had a whopping 360 rwtq at 2800 rpms. I'd expect you to be 400 rwtq or more. Wonder what she'd have made with one of those 24x/25x cams that some people are using. GREAT RESULTS !
DanielZ06
10-13-2007, 07:51 AM
I should've just bought an LS7 for the money I've got in mine now. =|
beardWS6
10-13-2007, 07:59 AM
Very nice numbers!
mxmatt137
10-13-2007, 09:21 AM
When you say intake, what do you mean? The ls7 is better than a ported FAST 90, so are you running a sheetmetal intake or something?
MikesTorched05GT
10-13-2007, 09:50 AM
When you say intake, what do you mean? The ls7 is better than a ported FAST 90, so are you running a sheetmetal intake or something?
I think he ment intake as in Lid...vararam, slp ect. but i could be wrong
I think he ment intake as in Lid...vararam, slp ect. but i could be wrong
blackz93
10-13-2007, 09:55 AM
That's they way I took it, too.
Nice numbers! :)
Nice numbers! :)
RC45
10-13-2007, 12:01 PM
Tuned a C6 Z06 /w Kooks, mild 23x/23x cam and intake
560 rwhp, 485 rwtq....
the end :)
Very nice numbers. Could you post the dyno chart for us to drool over??
Paul
560 rwhp, 485 rwtq....
the end :)
Very nice numbers. Could you post the dyno chart for us to drool over??
Paul
Big-DEN
10-13-2007, 07:04 PM
Personally I haven't been happy with the "common" LS7 results.
RWTQ is somewhat a measure of the efficiency of the combo.
I wouldn't be happy with the RWTQ out of the LS7's until they are 520rwtq or so at the peak being more common...
RWTQ is somewhat a measure of the efficiency of the combo.
I wouldn't be happy with the RWTQ out of the LS7's until they are 520rwtq or so at the peak being more common...
delsold
10-13-2007, 07:31 PM
Personally I haven't been happy with the "common" LS7 results.
RWTQ is somewhat a measure of the efficiency of the combo.
I wouldn't be happy with the RWTQ out of the LS7's until they are 520rwtq or so at the peak being more common...
are you the kinda guy that would have jessica alba crawling in your lap and say something like "could you please get up, i dont really like your hair like that" ?
RWTQ is somewhat a measure of the efficiency of the combo.
I wouldn't be happy with the RWTQ out of the LS7's until they are 520rwtq or so at the peak being more common...
are you the kinda guy that would have jessica alba crawling in your lap and say something like "could you please get up, i dont really like your hair like that" ?
KAOS
10-13-2007, 08:42 PM
no i undersstand what he is saying about the tq it looks a little low to me as well.
Big-DEN
10-13-2007, 10:51 PM
When they get the combination so that the RWTQ is "right", the RWHP will be higher.
Thats all I'm saying.
Thats all I'm saying.
LSInnovations
10-14-2007, 03:22 AM
When you say intake, what do you mean? The ls7 is better than a ported FAST 90, so are you running a sheetmetal intake or something?
This is the same car from another post going about a unknown valvetrain noise.
It has a calloway air intake/MAF, 23x/23x camshaft (that idles barely more noticable than stock), kooks longtubes /w cat pipe, full hptuners tune.
Torque low? lol. Cause I need any *less* traction in 1st/2nd/3rd gear :)
This is the same car from another post going about a unknown valvetrain noise.
It has a calloway air intake/MAF, 23x/23x camshaft (that idles barely more noticable than stock), kooks longtubes /w cat pipe, full hptuners tune.
Torque low? lol. Cause I need any *less* traction in 1st/2nd/3rd gear :)
c5_ls1_6spd
10-14-2007, 03:06 PM
I should've just bought an LS7 for the money I've got in mine now. =|
any track times?
any track times?
KAOS
10-15-2007, 06:16 AM
not saying tq is low but i figure for that many cubes and all of the great parts in it i want to see 530+tq but hey im greedy. great numbers im not a hater. wish i had the setup myself
RC45
10-15-2007, 02:00 PM
Any chance of a dyno chart some time?
bad95killer
10-15-2007, 11:15 PM
Any chance of a dyno chart some time?
+1 :judge:
peace
+1 :judge:
peace
pdd
10-16-2007, 12:58 AM
Stout Numbers:d
Ryne @ CMS
10-16-2007, 01:32 AM
good numbers! alot of nay-sayers here......
Big-DEN
10-16-2007, 09:46 AM
I wasn't naysaying, making note of the 485twtq out of 427 cubic inches.
Just pointing it out. When I say this differently you guys might understand...
A 382 stroker or 388 big bore can put out 480rwtq with the right cam timing and supporting parts (IE: fast90 ported)...
Is why I said that 485rwtq out of 427 cubic inches means that we are "missing some" and can be somewhere between the camtiming and tune. Maybe the ports are "too big", like the old cleveland heads on fords. Hopefully not, and a change of cam timing or tune, gets that RWTQ up to 510-530rwtq peak like you would think it would be.
Once we find it, there will be more rwhp that was hiding and will be released. So instead, you'll be saying - we got 615rwhp/530rwtq with every point on the curve greater than that of the 560rwhp/485rwtq.
Its likely the tuning/cam timing is based on the old tuning models for cathedral port heads and fast90 or stock ls6 style intakes, and hopefully there is "a fix" for it...
Is what I was saying. Not knocking it one bit..
Just pointing it out. When I say this differently you guys might understand...
A 382 stroker or 388 big bore can put out 480rwtq with the right cam timing and supporting parts (IE: fast90 ported)...
Is why I said that 485rwtq out of 427 cubic inches means that we are "missing some" and can be somewhere between the camtiming and tune. Maybe the ports are "too big", like the old cleveland heads on fords. Hopefully not, and a change of cam timing or tune, gets that RWTQ up to 510-530rwtq peak like you would think it would be.
Once we find it, there will be more rwhp that was hiding and will be released. So instead, you'll be saying - we got 615rwhp/530rwtq with every point on the curve greater than that of the 560rwhp/485rwtq.
Its likely the tuning/cam timing is based on the old tuning models for cathedral port heads and fast90 or stock ls6 style intakes, and hopefully there is "a fix" for it...
Is what I was saying. Not knocking it one bit..
71CamaroLS1
10-16-2007, 10:58 AM
There have been quite a few LS7s showing RWTQ in the low 500s. Part of the key to this is cam timing vs. compression. The LS7 intake starts to go out-of-tune in the low to mid 6000 RPM range. To get the engine to rev a bit higher, and therefore produce a bigger peak HP number, a lot of cam grinders move the Intake Valve Close point quite late - 50 degrees or so ABDC at .050. The late IVC then bleeds off cylinder pressure (torque) at low to mid RPM - the engine has a low dynamic compression ratio.
Contrast that with the Katech Torquer cam, which has an IVC of about only 36 degrees ABDC @ .050. This results in a (very high) dynamic compression ratio in the low 9s (assuming stock static compression of 11.0). The higher dynamic compression results in more torque, as the name suggests, although the power falls off sooner above 6300 or so, and the peak numbers aren't as high.
If you're trying to have the best of both worlds, you can get close by running a cam with late IVC, but increasing the static compression. The highest HP LS7 builds are often running static compression between 11.5 and 12.
A side note: based on the high dynamic compression people are getting away with, and the fact that some folks see peak HP with timing as low as 24 degrees, the LS7 combustion chamber may be even more efficient than the LS1/2.
Contrast that with the Katech Torquer cam, which has an IVC of about only 36 degrees ABDC @ .050. This results in a (very high) dynamic compression ratio in the low 9s (assuming stock static compression of 11.0). The higher dynamic compression results in more torque, as the name suggests, although the power falls off sooner above 6300 or so, and the peak numbers aren't as high.
If you're trying to have the best of both worlds, you can get close by running a cam with late IVC, but increasing the static compression. The highest HP LS7 builds are often running static compression between 11.5 and 12.
A side note: based on the high dynamic compression people are getting away with, and the fact that some folks see peak HP with timing as low as 24 degrees, the LS7 combustion chamber may be even more efficient than the LS1/2.