Ported Exhaust Manifold Gains - Page 3 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


Performance, Brainstorming & Tuning Talk about modifications, or anything else associated with performance enhancements. Have a new idea for performance/reliability? Post it here. No idea is stupid! (please use Detailing and Appearance for cosmetic ideas)

Reply
 
 
 
Thread Tools Search this Thread
Old 12-24-2004, 11:18 AM   #21
Sol
Senior Member
True Car Nut
Thread Starter
 
Join Date: Sep 2002
Posts: 8,909
Thanks: 0
Thanked 0 Times in 0 Posts
Sol is on a distinguished road
Default

Every car is different I guess. I think the point trying to be made here is, PEM'* are a good cheap alternative, that still performs well.
Sol is offline   Reply With Quote
Old 12-26-2004, 12:28 AM   #22
Senior Member
Posts like a Corvette
 
Join Date: Jul 2004
Location: Bolingbrook, IL Location: Clarkston, MI
Posts: 1,256
Thanks: 0
Thanked 0 Times in 0 Posts
llBlazin_llLo is on a distinguished road
Default

Quote:
Originally Posted by dbtk2
If you have any experience with making L67'* go fast, you know you're not gonna go mid 12'* with that setup. Believe me, he'* leaving some stuff out. Probably forgot about the hundeds of pounds worth of weight reduction too... You're not gonna do 12.4'* on a 3" pulley with a Gen III M90 in a full weight (other than spare tire and jack), its not gonna happen. Who is it that did this? Where are there bigger injectors? If you're running basically in the 12'* at all, you need bigger injectors? What do they tune it with??? I'm sure they didn't just throw the cam in there and leave fuel and timing alone, there is no way. Those mods are good for about mid-low 13'*, not mid-low 12'*.

Shawn
Yes, minor weight reduction (minor being the key word), upgraded injectors, PCM was custom tuned maybe an ICCU? I know he got one either right before or right after, sorry that'* it. I'll throw a little better known name out - Zoomer.

Zoomer'* '99 GTP 12.8 and 12.6 with NOS!

PEM'*
P&P TB
Intense Rockers
Polished M90
2.85 Pulley
Race Gas
DR
llBlazin_llLo is offline   Reply With Quote
Old 12-26-2004, 12:55 AM   #23
Senior Member
True Car Nut
 
Join Date: May 2003
Location: Holt, MI & Lima, OH
Posts: 3,022
Thanks: 0
Thanked 0 Times in 0 Posts
dbtk2 is on a distinguished road
Default

Quote:
Originally Posted by llBlazin_llLo
Yes, minor weight reduction (minor being the key word), upgraded injectors, PCM was custom tuned maybe an ICCU? I know he got one either right before or right after, sorry that'* it. I'll throw a little better known name out - Zoomer.

Zoomer'* '99 GTP 12.8 and 12.6 with NOS!

PEM'*
P&P TB
Intense Rockers
Polished M90
2.85 Pulley
Race Gas
DR
Do you have a list to this guys profile or something where it lists his mods? I searched on clubGP and couldn't find anyone with close to those mods with that time. And, you can't leave out the little things. "Oh yeah, it has injectors, and maybe an ICCU too." Well, you should've said that at first, those things make a difference, otherwise, why would they have them? Little mods all add up. How do you think we brought my dads GTP down to 12.0'* from 12.80? Other than the tranny work, we didn't do anything big. An ud pulley here, fan switch there, injectors, a little PCM work, a little tuning, heat insulating, experimenting with different spark plugs, adjustable timing, learning how to drive it a little better, etc... All those things add up.

Yes, Zooomers '99 was quick for what it had done to it, I'll admit, however 12.9'* (because that car went 12.94, not 12.8'*) is a SIGNIFICANTLY easier to achieve than 12.4'*. Not only that, but the car was slightly more modified than you make it out to be. It had slicks, not drag radials. Zooomer also had an underdrive pulley for the alternator and water pump, a shift kit, 3" downpipe, 2.5" exhaust, 160 t-stat, and an aftermarket PCM. He installed a lighter batter, removed brackets from the engine, installed lighter speakers (afterall, he owns a stereo shop), installed a fan switch, and ran mostly water in the cooling system for better cooling. Yeah, none of the stuff I listed was really major, but its all the little stuff that adds up to big things. And, its not like all that stuff was cheap either, when you add it up, it cost quite a bit. And, like I said, that half second makes a huge difference.

Shawn
dbtk2 is offline   Reply With Quote
Old 12-26-2004, 01:12 AM   #24
Sol
Senior Member
True Car Nut
Thread Starter
 
Join Date: Sep 2002
Posts: 8,909
Thanks: 0
Thanked 0 Times in 0 Posts
Sol is on a distinguished road
Default

I just really wanna know how much power I will gain, to get a good overall estimate of my car.
Sol is offline   Reply With Quote
Old 12-26-2004, 01:16 AM   #25
Senior Member
True Car Nut
 
Join Date: May 2003
Location: Holt, MI & Lima, OH
Posts: 3,022
Thanks: 0
Thanked 0 Times in 0 Posts
dbtk2 is on a distinguished road
Default

Well, that depends on a lot of things. However, my guess would be 8-10 crank hp, probably about the same torque. You'll gain about 2 tenths or so in the 1/4, but it should pretty much rid of all your kr.

Shawn
dbtk2 is offline   Reply With Quote
Old 12-26-2004, 01:20 AM   #26
Sol
Senior Member
True Car Nut
Thread Starter
 
Join Date: Sep 2002
Posts: 8,909
Thanks: 0
Thanked 0 Times in 0 Posts
Sol is on a distinguished road
Default

Good, that'* what I'm hoping for.
Sol is offline   Reply With Quote
Old 12-26-2004, 01:20 AM   #27
Senior Member
Posts like a Corvette
 
Join Date: Jul 2004
Location: Bolingbrook, IL Location: Clarkston, MI
Posts: 1,256
Thanks: 0
Thanked 0 Times in 0 Posts
llBlazin_llLo is on a distinguished road
Default

Quote:
Originally Posted by dbtk2
Quote:
Originally Posted by llBlazin_llLo
Yes, minor weight reduction (minor being the key word), upgraded injectors, PCM was custom tuned maybe an ICCU? I know he got one either right before or right after, sorry that'* it. I'll throw a little better known name out - Zoomer.

Zoomer'* '99 GTP 12.8 and 12.6 with NOS!

PEM'*
P&P TB
Intense Rockers
Polished M90
2.85 Pulley
Race Gas
DR
Do you have a list to this guys profile or something where it lists his mods? I searched on clubGP and couldn't find anyone with close to those mods with that time. And, you can't leave out the little things. "Oh yeah, it has injectors, and maybe an ICCU too." Well, you should've said that at first, those things make a difference, otherwise, why would they have them? Little mods all add up. How do you think we brought my dads GTP down to 12.0'* from 12.80? Other than the tranny work, we didn't do anything big. An ud pulley here, fan switch there, injectors, a little PCM work, a little tuning, heat insulating, experimenting with different spark plugs, adjustable timing, learning how to drive it a little better, etc... All those things add up.

Yes, Zooomers '99 was quick for what it had done to it, I'll admit, however 12.9'* (because that car went 12.94, not 12.8'*) is a SIGNIFICANTLY easier to achieve than 12.4'*. Not only that, but the car was slightly more modified than you make it out to be. It had slicks, not drag radials. Zooomer also had an underdrive pulley for the alternator and water pump, a shift kit, 3" downpipe, 2.5" exhaust, 160 t-stat, and an aftermarket PCM. He installed a lighter batter, removed brackets from the engine, installed lighter speakers (afterall, he owns a stereo shop), installed a fan switch, and ran mostly water in the cooling system for better cooling. Yeah, none of the stuff I listed was really major, but its all the little stuff that adds up to big things. And, its not like all that stuff was cheap either, when you add it up, it cost quite a bit. And, like I said, that half second makes a huge difference.

Shawn
Yes, believe me I know that the little stuff adds up. If I was going to post tiny things it would be so long (and not worth my time). And where do you draw the line, you could go into spark plug gap, outside temp, or even saying ZZP lost 20 lbs. from one run to another. My point in posting is that 12'* are possible and even mid to low 12'* with PEM'*. Is it going to be easier to do with headers? Ya BUT I guess you could say the same about throwing a big turbo on instead of the M90 to get into the 10'*.

Anyways I'm done on this subject, the point has been proven that PEM'* are a good cheep alternative, that still perform well.
llBlazin_llLo is offline   Reply With Quote
Old 12-27-2004, 01:31 AM   #28
Senior Member
True Car Nut
 
Join Date: May 2003
Location: Holt, MI & Lima, OH
Posts: 3,022
Thanks: 0
Thanked 0 Times in 0 Posts
dbtk2 is on a distinguished road
Default

Quote:
Originally Posted by llBlazin_llLo
My point in posting is that 12'* are possible and even mid to low 12'* with PEM'*. Is it going to be easier to do with headers? Ya BUT I guess you could say the same about throwing a big turbo on instead of the M90 to get into the 10'*.

Anyways I'm done on this subject, the point has been proven that PEM'* are a good cheep alternative, that still perform well.
I believe I said that you definately can go 12'* with PEM'*. I know it can be done. It can be done on stock manifolds as well. (theres even a guy going mid 14'* in a 3.8L stock cam/stock heads GP GT on stock manifolds) The point I was making was that if you're planning on going 12'* to begin with, then go with headers, it will save you money due to the other mods you are gonna have to buy to make up for not buying the headers. That was the point I was making. But yes, they are definately a cheap alternative that give a good gain, no doubt. They just don't make sense for someone trying to go fast. And you definately could say that it is a lot easier to throw a big turbo on a L67 instead of the M90, thats obvious, the reason Zooomer kept the M90 on his car was to show that you can go fast without drastically changing things like that. He even posted on ClubGP that he was planning on running the M90 until he went 10'* with it, then he would go to something that made more sense. But, if you called up ZZP and said you wanted to go 10'* what would you need to do it, I can basically garuntee you they are going to tell you to switch power adders. (among many other things obviously)

Shawn
dbtk2 is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Gains to be had from a N* and ported Gen3 1994se Performance, Brainstorming & Tuning 6 04-03-2008 12:30 AM
PICS!! Ported GEN III M90 until spring, then ported GEN V OLBlueEyesBonne Forced Induction 20 10-13-2006 03:55 AM
Ported exhaust manifold Jim0170 Performance, Brainstorming & Tuning 1 08-22-2006 10:06 PM
Chip and Exhaust Power Gains crod101 Performance, Brainstorming & Tuning 1 03-17-2006 05:34 PM
Exhaust Power Gains? CmptrNerd Performance, Brainstorming & Tuning 3 11-28-2004 10:55 PM


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 Off
Refbacks are Off



All times are GMT -4. The time now is 09:44 AM.


We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.