IF!!!!! I do get heads.....
Thread Starter
Race Director
Joined: Dec 2003
Posts: 12,599
Likes: 1
From: Texas
IF!!!!! I do get heads.....
My 2000 6 speed coupe picked up 55 HP 
and 30 TQ 
after adding:
LS6 intake
Underdrive Pulley
MTI G1 cam
Springs, retainers and pushrods (for the cam)
Kooks LT headers
Kooks X-pipe with high flow cats
Computer tune
Was hoping for 75 HP and more than 30 TQ when these mods were done. No dyno tune was done.
What heads would complement this setup? Realistically, if tuned right with these heads, what will I gain? I know it's tough to say, but my realistic numbers are just not adding up to those "possible" gains.
and 30 TQ after adding:LS6 intake
Underdrive Pulley
MTI G1 cam
Springs, retainers and pushrods (for the cam)
Kooks LT headers
Kooks X-pipe with high flow cats
Computer tune
Was hoping for 75 HP and more than 30 TQ when these mods were done. No dyno tune was done.
What heads would complement this setup? Realistically, if tuned right with these heads, what will I gain? I know it's tough to say, but my realistic numbers are just not adding up to those "possible" gains.
Advanced
Joined: Oct 2004
Posts: 67
Likes: 0
im biased but i like the 5.3 liter heads ported with 2.02 valves I think its the 11.0-1 compression that does it for me, then again there may be a better set of heads to go with ur combo, theres some really good ported ls6 heads being sold on the bored now dirt cheap, look at alot of the posts, and sponsors you'll find em, for a totally decked out set ive seen em for like 1300 bucks on here, I only have about 650 bucks in my 5.3 heads, pretty cheap if you buy the heads and have a reputable shop port polish do valve job and install larger valves. Please other people chime in, im not the one to ask lol 
Drifting
Joined: Sep 2002
Posts: 1,947
Likes: 0
From: Howell MI.
Originally Posted by 01vette87GN
im biased but i like the 5.3 liter heads ported with 2.02 valves I think its the 11.0-1 compression that does it for me, then again there may be a better set of heads to go with ur combo, theres some really good ported ls6 heads being sold on the bored now dirt cheap, look at alot of the posts, and sponsors you'll find em, for a totally decked out set ive seen em for like 1300 bucks on here, I only have about 650 bucks in my 5.3 heads, pretty cheap if you buy the heads and have a reputable shop port polish do valve job and install larger valves. Please other people chime in, im not the one to ask lol
Got mine and they are :
THE BEST SET OF HEADS
E-mail Address(es):
mikepol@etheads.com
gBusiness Information:
Company: et performance
Address:
3207 Haggerty rd.
Walled Lake MI 48390
www.etheads.com
Phone: 248-668-9390
Fax: 248-668-9380
Good Luck John
Safety Car
Joined: Jan 2004
Posts: 3,786
Likes: 1
From: Houston TX
Get the MTI Stage 2E heads and a good tune. You should be over 420rwhp. I'm getting 417 with a smaller cam and almost the same bolt-on's as you. My 417 number was pulled in Houston's summer humidity and 94 degrees.
Also if you have the work done at MTI they will waranty the work.
Also if you have the work done at MTI they will waranty the work.
Melting Slicks
Joined: Jun 2001
Posts: 2,743
Likes: 3
From: Davie Florida
Originally Posted by SideStep
Well there is some of your problem. Get a good dyno tune. Why spend all that money on mods and not optimise it with a dyno tune....???
I thought you were already dyno tuned???? If you aren't get your car dyno tuned before you push the panic button. Since you are running an MTI cam I would use their stage 2 heads.
Last edited by Mitch C; Oct 31, 2004 at 09:20 AM.
Thread Starter
Race Director
Joined: Dec 2003
Posts: 12,599
Likes: 1
From: Texas
Originally Posted by Darkness
WOW all thoso mods and only 55/30?!?!?! You sure need to get that tune dune cause that is kinda shameful. You should gain some good gains with the tune.
see, that is exactly what I thought. 
Going crazy thinking about it too!!!!
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Thread Starter
Race Director
Joined: Dec 2003
Posts: 12,599
Likes: 1
From: Texas
Originally Posted by SideStep
Well there is some of your problem. Get a good dyno tune. Why spend all that money on mods and not optimise it with a dyno tune....???
I am new to all the modding and tuning. I just went with what was suggested to me because I had no clue what to do. Never was a dyno tune even suggested to me though
Thread Starter
Race Director
Joined: Dec 2003
Posts: 12,599
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From: Texas
[QUOTE=Mitch C]
I thought you were already dyno tuned???? If you aren't get your car dyno tuned before you push the panic button.QUOTE]
It is listed on invoice as 'PCM Custom Tuning'. Guess I'll give them a call and try to make it up there on a day off.......
I thought you were already dyno tuned???? If you aren't get your car dyno tuned before you push the panic button.QUOTE]
It is listed on invoice as 'PCM Custom Tuning'. Guess I'll give them a call and try to make it up there on a day off.......
Pro
Joined: Mar 2002
Posts: 712
Likes: 0
From: Santa Clarita Ca
Originally Posted by vetterlatethannever
My 2000 6 speed coupe picked up 55 HP and 30 TQ after adding:
LS6 intake
Underdrive Pulley
MTI G1 cam
Springs, retainers and pushrods (for the cam)
Kooks LT headers
Kooks X-pipe with high flow cats
Computer tune
Was hoping for 75 HP and more than 30 TQ when these mods were done. No dyno tune was done.
What heads would complement this setup? Realistically, if tuned right with these heads, what will I gain? I know it's tough to say, but my realistic numbers are just not adding up to those "possible" gains.
and 30 TQ after adding:LS6 intake
Underdrive Pulley
MTI G1 cam
Springs, retainers and pushrods (for the cam)
Kooks LT headers
Kooks X-pipe with high flow cats
Computer tune
Was hoping for 75 HP and more than 30 TQ when these mods were done. No dyno tune was done.
What heads would complement this setup? Realistically, if tuned right with these heads, what will I gain? I know it's tough to say, but my realistic numbers are just not adding up to those "possible" gains.
Drifting
Joined: Oct 2000
Posts: 1,957
Likes: 1
From: Albuquerque NM
Originally Posted by vetterlatethannever
I know, I know (you learn so fast after you make the mistake)
I am new to all the modding and tuning. I just went with what was suggested to me because I had no clue what to do. Never was a dyno tune even suggested to me though
I am new to all the modding and tuning. I just went with what was suggested to me because I had no clue what to do. Never was a dyno tune even suggested to me though
Thread Starter
Race Director
Joined: Dec 2003
Posts: 12,599
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From: Texas
Originally Posted by '97 C5
If those are RWHP/RWT numbers I don't think they are bad at all, and you should be happy..... especially considering how restrictive your stock LS1 heads are to this cam.
U/d pulley possible #9-12 result 5
LS6 instake possible #10-15 result 5
headers and x=pipe w/high flow cats possible # 25-35 result 22.5
"recommended" G1 cam possible # 30-35 result 22.5
total possible # 74-97 result 55
Why did they reccomend this cam if I need heads with it??????
Thread Starter
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Joined: Dec 2003
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From: Texas
Originally Posted by flynbludream
It's a good idea to not get on your car too hard until you get it tuned. NA is not as bad, but if you ever decide to go with FI and you dont get a tune you are going to be fixing a lot more than a bad tune.
Safety Car
Joined: Jan 2004
Posts: 3,786
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From: Houston TX
Don't get too excited, call MTI they will work it out with you. When you first posted I did not know that MTI had did your install. Their pcm tuning is basically what most people refer to as dyno tuning. Since they did the install and tune you can get on it all you want. If you had installed the cam yourself and did no tuning then you would need to take it easy until you get a tune.
The G1 will do fine with stock heads, and even better with ported heads. I'd call them tomorrow and discuss your concerns with David.
Last but not least, all engine are different and respond different to mods. Scan and post you dyno sheet so we can take a look.
The G1 will do fine with stock heads, and even better with ported heads. I'd call them tomorrow and discuss your concerns with David.
Last but not least, all engine are different and respond different to mods. Scan and post you dyno sheet so we can take a look.
Melting Slicks
Joined: Jun 2001
Posts: 2,743
Likes: 3
From: Davie Florida
Originally Posted by '97 C5
If those are RWHP/RWT numbers I don't think they are bad at all, and you should be happy..... especially considering how restrictive your stock LS1 heads are to this cam.
Last edited by Mitch C; Oct 31, 2004 at 04:35 PM.
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From: GARDENA Ca, State Of Konfusion
St. Jude Donor '05
Originally Posted by vetterlatethannever
I know, I know (you learn so fast after you make the mistake)
I am new to all the modding and tuning. I just went with what was suggested to me because I had no clue what to do. Never was a dyno tune even suggested to me though
I am new to all the modding and tuning. I just went with what was suggested to me because I had no clue what to do. Never was a dyno tune even suggested to me though
I think your numbers are very good for the M6, you s/b around 370-375rwhp. See the mods in my sig which are similiar to your except the A4, I got 350 rwhp with the 3.42's. At dyno day, there was a M6 with a new installed Thunder Cam (224/561/112), headers, Vortex that dynoed at 378 rwhp/ 372 rwtq and no tune.
Adding numerous mods do not produce cumulative numbers all the time! You are not going to reach 400 rwhp unless you go with a very big cam (G5-X3).
Melting Slicks
Joined: May 2003
Posts: 2,851
Likes: 1
From: San Bruno Ca
Tuning should get you around 10 to 15 hp. LS-6 ported heads should get around another 30 to 40 hp. You should be pretty happy with your gains, afterall this is RWHP not FWHP.
Last edited by Scubanme; Oct 31, 2004 at 08:03 PM.