LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

LE2 Heads LE4 Cam ET's

Old Aug 7, 2006 | 08:37 AM
  #16  
Javier97Z28's Avatar
Moderator
 
Joined: Dec 1999
Posts: 3,853
From: Jupiter (NPB), Fl
Re: LE2 Heads LE4 Cam ET's

Originally Posted by 93turbo5oh
my buddies 396 ran 123 with 24lb injectors N/A with some old MTI heads. i would expect 117-118 from a heads cam stock shortblock.
I imagine he didn't run those times first pass either... give the man some time... picky mother****ers on this forum, damn.
Old Aug 7, 2006 | 12:26 PM
  #17  
RealQuick's Avatar
Registered User
 
Joined: Feb 2002
Posts: 5,645
From: Bridgewater, MA
Re: LE2 Heads LE4 Cam ET's

Originally Posted by cmroSS97
My best 1/8 was 7.999 @ 91.89 Need a better 60'
I bet weather may have played a big role. Heat and humidity = bad.

The difference from a humid day to a non humid day was .3 and 3mph with no changes to my car.

I went to the track with old LE2 heads and 230/236 cam with 368rwhp/336rwtq (mailorder tune) and ran a 8.2 @ 90mph with a 2.0x 60'. My stock bottom end mild setup almost ran as well as yours. I am guessing you should be ~3mph quicker (~95mph in the 1/8th) when the weather is right and the bugs are worked out.

Good luck.

Jon

Last edited by RealQuick; Aug 7, 2006 at 08:58 PM.
Old Aug 7, 2006 | 05:44 PM
  #18  
93turbo5oh's Avatar
Registered User
 
Joined: Dec 2002
Posts: 690
From: Denton, TX
Re: LE2 Heads LE4 Cam ET's

Originally Posted by Javier97Z28
I imagine he didn't run those times first pass either... give the man some time... picky mother****ers on this forum, damn.
the car never went less then 122.8mph, even in the texas heat. it trapped 97mph in the 1/8. hell, the gtp stage 2 heads and gtp6 cam i installed in my buddies NA stock shortblock 95 m6 TA went 94mph in the 1/8 back in 1998. you can get the et down, but on an NA car the mph is gonna stay consistent. point was why is the car running a h/c stock shortblock mph with a 12.5:1 396?

Last edited by 93turbo5oh; Aug 7, 2006 at 05:49 PM.
Old Aug 7, 2006 | 07:27 PM
  #19  
SStrokerAce's Avatar
Banned
 
Joined: Oct 2002
Posts: 6,518
Re: LE2 Heads LE4 Cam ET's

because it's freaking HOT OUTSIDE!

"TEmp was about 85 when we got there and about 78-80 after the sun went down, fairly high humidity."

Not to mention weight, the injectors are causing it to go LEAN about 800rpm before peak HP and he's shifting it lower. That's going to find more MPH everytime, so will a better DA.

Same motor in a 3200lbs car tuned correctly will go 124+

Same setup with a smaller cam in a 355 has done 123mph in the 1/4 so it's not the heads/cam that's making it go ONLY 119.

Javier thanks for pointing this out to him in the first place.

Bret

Last edited by SStrokerAce; Aug 7, 2006 at 07:34 PM.
Old Aug 7, 2006 | 08:07 PM
  #20  
Javier97Z28's Avatar
Moderator
 
Joined: Dec 1999
Posts: 3,853
From: Jupiter (NPB), Fl
Re: LE2 Heads LE4 Cam ET's

Originally Posted by SStrokerAce
Javier thanks for pointing this out to him in the first place.

Bret
No problem.. it seems people aren't allowed to have shakedown runs with problems and are never expected to get more power of a setup than what it first runs on here at times. Some people get lucky or do it all right the first time and run great times from the get go... most don't.

Back in my cam only setup, my first pass out ever was a 12.8 @ 105 in dog**** weather. A set of gears and lots of patience and work on the SAME setup and it went 12.06 @ 112.81.

People also think 396 is some magic number that will make it so much faster than a 350 with the same heads on it...

Last edited by Javier97Z28; Aug 7, 2006 at 08:21 PM.
Old Aug 7, 2006 | 08:46 PM
  #21  
93turbo5oh's Avatar
Registered User
 
Joined: Dec 2002
Posts: 690
From: Denton, TX
Re: LE2 Heads LE4 Cam ET's

Originally Posted by SStrokerAce
because it's freaking HOT OUTSIDE!

"TEmp was about 85 when we got there and about 78-80 after the sun went down, fairly high humidity."

Not to mention weight, the injectors are causing it to go LEAN about 800rpm before peak HP and he's shifting it lower. That's going to find more MPH everytime, so will a better DA.

Same motor in a 3200lbs car tuned correctly will go 124+

Same setup with a smaller cam in a 355 has done 123mph in the 1/4 so it's not the heads/cam that's making it go ONLY 119.

Javier thanks for pointing this out to him in the first place.

Bret
right, because its cool in the summer in texas. btw, who has a 3200lb race weight f-body? all of our cars have been in the mid 3600s. whatever.
Old Aug 7, 2006 | 08:48 PM
  #22  
93turbo5oh's Avatar
Registered User
 
Joined: Dec 2002
Posts: 690
From: Denton, TX
Re: LE2 Heads LE4 Cam ET's

Originally Posted by Javier97Z28
No problem.. it seems people aren't allowed to have shakedown runs with problems and are never expected to get more power of a setup than what it first runs on here at times. Some people get lucky or do it all right the first time and run great times from the get go... most don't.

Back in my cam only setup, my first pass out ever was a 12.8 @ 105 in dog**** weather. A set of gears and lots of patience and work on the SAME setup and it went 12.06 @ 112.81.

People also think 396 is some magic number that will make it so much faster than a 350 with the same heads on it...
well, that same 396 that ran 123 made 440rwhp. when it had the stock shortblock under it the thing made 390rwhp with the same heads and cam and ran 116. and those were early ported lt1 heads that flowed 255cfm on the MTI bench. i think they flowed around 250 on Mike Yelvingtons bench back in 98 or so. is hard to remember the exact number since they were ported 10 years ago when the car was a year old. so yes, it should majically pick up with cubic inches. sorry to rain on everyone circle jerk fest with a dose of reality.

Last edited by 93turbo5oh; Aug 7, 2006 at 08:51 PM.
Old Aug 7, 2006 | 08:49 PM
  #23  
Javier97Z28's Avatar
Moderator
 
Joined: Dec 1999
Posts: 3,853
From: Jupiter (NPB), Fl
Re: LE2 Heads LE4 Cam ET's

When YOU run the times, you earn the right to run your mouth. While you're running 13's running your mouth with other people's wallets you need to sit in a corner and not rip on people's setups.
Old Aug 7, 2006 | 09:03 PM
  #24  
1racerdude's Avatar
Banned
 
Joined: May 2003
Posts: 6,661
From: LA (lower Alabama)
Re: LE2 Heads LE4 Cam ET's

Originally Posted by 93turbo5oh
well, that same 396 that ran 123 made 440rwhp. when it had the stock shortblock under it the thing made 390rwhp with the same heads and cam and ran 116. and those were early ported lt1 heads that flowed 255cfm on the MTI bench. i think they flowed around 250 on Mike Yelvingtons bench back in 98 or so. is hard to remember the exact number since they were ported 10 years ago when the car was a year old. so yes, it should majically pick up with cubic inches. sorry to rain on everyone circle jerk fest with a dose of reality.

Well,
First thing is it ain't got no heads. 255FPS ain't s*** on a 396. They will feed a 350 somewhat. They are capable of making 525FWHP and a 396 should be in the 800FWHP range with the right set up.
CID won't do anything magically.

If I had a 396 and it only run in the mid11's I would take it home and fix it.
I have 383's running mid tens on motor with a 3500lb weight(close to stock).


If it don't run chrome it.

Last edited by 1racerdude; Aug 7, 2006 at 09:12 PM.
Old Aug 7, 2006 | 09:08 PM
  #25  
93turbo5oh's Avatar
Registered User
 
Joined: Dec 2002
Posts: 690
From: Denton, TX
Re: LE2 Heads LE4 Cam ET's

Originally Posted by Javier97Z28
When YOU run the times, you earn the right to run your mouth. While you're running 13's running your mouth with other people's wallets you need to sit in a corner and not rip on people's setups.
yeah, my daily driver runs low 13s with a stock motor. wanna race my mustang? its a little quicker and has a few more parts.
Old Aug 7, 2006 | 09:13 PM
  #26  
93turbo5oh's Avatar
Registered User
 
Joined: Dec 2002
Posts: 690
From: Denton, TX
Re: LE2 Heads LE4 Cam ET's

Originally Posted by 1racerdude
Well,
First thing is it ain't got no heads. 255FPS ain't s*** on a 396. They will feed a 350 somewhat. They are capable of making 525FWHP and a 396 should be in the 800FWHP range with the right set up.
CID won't do anything magicly.

If it don't run chrome it.
i know 255cfm aint ****. but the car did pick up with just a shortblock on junk heads and a cam that was about at big as a cc306. all im stating is that the performance of old parts was exceeding some people current performance on this board. i just dont understand how better heads and cam (his stuff compared to teh stuff ported in 1996) with the same displacement can run 5 mph shy at about the same DA.
Old Aug 7, 2006 | 09:15 PM
  #27  
1racerdude's Avatar
Banned
 
Joined: May 2003
Posts: 6,661
From: LA (lower Alabama)
Re: LE2 Heads LE4 Cam ET's

Originally Posted by 93turbo5oh
yeah, my daily driver runs low 13s with a stock motor. wanna race my mustang? its a little quicker and has a few more parts.

Wanna run MY Mustang I will give ya 7.
Old Aug 7, 2006 | 09:17 PM
  #28  
Javier97Z28's Avatar
Moderator
 
Joined: Dec 1999
Posts: 3,853
From: Jupiter (NPB), Fl
Re: LE2 Heads LE4 Cam ET's

Originally Posted by 93turbo5oh
yeah, my daily driver runs low 13s with a stock motor. wanna race my mustang? its a little quicker and has a few more parts.
Yep let me run out to Texas real quick to settle this. I don't have any problems running ANYONE.

There's nothing to "understand" here. There's plenty example of "old parts" cars here not even breaking mid 12's @ 110's in the past with old MTI and GTP stuff. What I don't understand is why you think a car should run its full potential on its FIRST time out.

I also think your buddy is pulling one on ya if you really think he's running 255cfm LT1 heads going 124.
Old Aug 7, 2006 | 09:20 PM
  #29  
1racerdude's Avatar
Banned
 
Joined: May 2003
Posts: 6,661
From: LA (lower Alabama)
Re: LE2 Heads LE4 Cam ET's

Originally Posted by 93turbo5oh
i know 255cfm aint ****. but the car did pick up with just a shortblock on junk heads and a cam that was about at big as a cc306. all im stating is that the performance of old parts was exceeding some people current performance on this board. i just dont understand how better heads and cam (his stuff compared to teh stuff ported in 1996) with the same displacement can run 5 mph shy at about the same DA.
He has BITE problems.Ya understand more HP than tires. Sounds like he is spinning through 2nd gear if THAT don't knock your ET & MPH in the head,don't know what will.

We don't give out brownie buttons for the "doing more with less syndrome"
Old Aug 7, 2006 | 09:28 PM
  #30  
93turbo5oh's Avatar
Registered User
 
Joined: Dec 2002
Posts: 690
From: Denton, TX
Re: LE2 Heads LE4 Cam ET's

Originally Posted by 1racerdude
Wanna run MY Mustang I will give ya 7.
probably not. so many 8 second cars running around i cant see straight anymore. i cant keep up with that. i didnt see the MTI heads flowed initially, but i did see the flow chart from Yelvi in '98 before we put them back on the 396. i drove that car to a 7.30@97mph in the 1/8 that summer before we went to the motorplex and ran the owner ran the 11.30@123 with a 7.3 and change with the same mph. the car had 26-8.5 et drags on it and was only running high 1.7 60' times.

Thread Tools
Search this Thread

All times are GMT -5. The time now is 03:49 PM.