#1  
Old 04-18-2022, 11:33 AM
PAUL K's Avatar
PAUL K PAUL K is offline
Ultimate Warrior
 
Join Date: Feb 2004
Location: Sugar Grove IL USA
Posts: 7,441
Default

Quote:
Originally Posted by Scott Roberts View Post
Zero experience with large ci ls engine..very little with any ls to be honest..lol
Are u looking to build a big inch engine Paul or is ya fishing..
Don't really see a need to go big from what I've seen and experienced with the ls ( limited experience). Got a co worker making 720 (crank hp) on pump gas with 427ci..

Just asking in regards to a recent conversation I had with a buddy. He was yapping about how bad azz LS engines are and they will out power bigger Pontiac engines. I was just wondering if any folks had first hand experience with the bigger engines?

Perfer real world information over Google. I've found Google to lead one to believe the Pontiac 557 block with destruct at three hundred horsepower and be safe to a thousand.... Chit there is even info on Google that says Chicago doesn't have a crime problem.

__________________
Go fast, see Elvis!
www.facebook.com/PaulKnippensMuscleMotors
The Following User Says Thank You to PAUL K For This Useful Post:
  #2  
Old 04-18-2022, 11:40 AM
Scott Roberts Scott Roberts is offline
Suspended
 
Join Date: Oct 2006
Posts: 3,160
Default

Quote:
Originally Posted by PAUL K View Post
Just asking in regards to a recent conversation I had with a buddy. He was yapping about how bad azz LS engines are and they will out power bigger Pontiac engines. I was just wondering if any folks had first hand experience with the bigger engines?

Perfer real world information over Google. I've found Google to lead one to believe the Pontiac 557 block with destruct at three hundred horsepower and be safe to a thousand.... Chit there is even info on Google that says Chicago doesn't have a crime problem.
Lmao... I see what you did there. I'm literally crying..����������.
I bet that guy never pointed to anything over 416ci. Bet he never saw the need too...
I knew u were fishing. Lol
As far as real world, how about 376ci with a blower making 687hp at the wheels and getting 21 mpg on the highway. Pontiac much?
Figured u were fishing. Lol


Last edited by Scott Roberts; 04-18-2022 at 11:43 AM. Reason: Ol
  #3  
Old 04-18-2022, 11:52 AM
PAUL K's Avatar
PAUL K PAUL K is offline
Ultimate Warrior
 
Join Date: Feb 2004
Location: Sugar Grove IL USA
Posts: 7,441
Default

Quote:
Originally Posted by Scott Roberts View Post
Lmao... I see what you did there. I'm literally crying..����������.
I bet that guy never pointed to anything over 416ci. Bet he never saw the need too...
I knew u were fishing. Lol
As far as real world, how about 376ci with a blower making 687hp at the wheels and getting 21 mpg on the highway. Pontiac much?
Figured u were fishing. Lol
https://fb.watch/c5G6BIk07K/

This pump gas Pontiac will hold its own against a lot of LS cars. It made 659 RWHP using 93 octane. It got 14 mpg and I'm sure it'd do better with over drive and a well tuned Q-jet. It also ran well into the nines in street trim.

What kind of times did the LS example you gave turn?

__________________
Go fast, see Elvis!
www.facebook.com/PaulKnippensMuscleMotors
  #4  
Old 04-18-2022, 11:55 AM
Scott Roberts Scott Roberts is offline
Suspended
 
Join Date: Oct 2006
Posts: 3,160
Default

Quote:
Originally Posted by PAUL K View Post
https://fb.watch/c5G6BIk07K/

This pump gas Pontiac will hold its own against a lot of LS cars. It made 659 RWHP using 93 octane. It got 14 mpg and I'm sure it'd do better with over drive and a well tuned Q-jet. It also ran well into the nines in street trim.

What kind of times did the LS example you gave turn?
I'm sure it will... maybe I'm bias.. I had a 376ci (supercharged) that walked hellcats... maybe that's my ignorance...

  #5  
Old 04-18-2022, 12:01 PM
FrankieT/A's Avatar
FrankieT/A FrankieT/A is offline
Ultimate Warrior
 
Join Date: Jun 2011
Location: USA
Posts: 2,590
Default

Quote:
Originally Posted by Scott Roberts View Post
I'm sure it will... maybe I'm bias.. I had a 376ci (supercharged) that walked hellcats... maybe that's my ignorance...
No you are right in this example but "supercharged".

There are people getting a 1000hp boosted out of what I would call regular LS engines.

We know there are people running 10's and better out of stock bottom end LS's but when they blow they just get another jy bottom end and go back to the track. But that's not me is all.

__________________
1978 Black & Gold T/A [complete 70 Ram Air III (carb to pan) PQ and 12 bolt], fully loaded, deluxe, WS6, T-Top car - 1972 Formula 455HO Ram Air numbers matching Julep Green - 1971 T/A 455, 320 CFM Eheads, RP cam, Doug's headers, Fuel injection, TKX 5 Spd. 12 Bolt 3.73, 4 wheel disc. All A/C cars
  #6  
Old 04-18-2022, 12:24 PM
PAUL K's Avatar
PAUL K PAUL K is offline
Ultimate Warrior
 
Join Date: Feb 2004
Location: Sugar Grove IL USA
Posts: 7,441
Default

Quote:
Originally Posted by Scott Roberts View Post
I'm sure it will... maybe I'm bias.. I had a 376ci (supercharged) that walked hellcats... maybe that's my ignorance...
What kind of times did that Caddy run?

I've seen Hellcats run low elevens and faster. Not sure if out running a stock Hellcat with a built to chit LS would be impressive or not

__________________
Go fast, see Elvis!
www.facebook.com/PaulKnippensMuscleMotors
  #7  
Old 04-18-2022, 12:31 PM
FrankieT/A's Avatar
FrankieT/A FrankieT/A is offline
Ultimate Warrior
 
Join Date: Jun 2011
Location: USA
Posts: 2,590
Default

Quote:
Originally Posted by PAUL K View Post
What kind of times did that Caddy run?

I've seen Hellcats run low elevens and faster. Not sure if out running a stock Hellcat with a built to chit LS would be impressive or not
Paul,
Even Butler is doing LS's now get with the program...

And LS's do not need to be built to chit to beat a Hellcat!

__________________
1978 Black & Gold T/A [complete 70 Ram Air III (carb to pan) PQ and 12 bolt], fully loaded, deluxe, WS6, T-Top car - 1972 Formula 455HO Ram Air numbers matching Julep Green - 1971 T/A 455, 320 CFM Eheads, RP cam, Doug's headers, Fuel injection, TKX 5 Spd. 12 Bolt 3.73, 4 wheel disc. All A/C cars
  #8  
Old 04-18-2022, 12:35 PM
Scott Roberts Scott Roberts is offline
Suspended
 
Join Date: Oct 2006
Posts: 3,160
Default

Quote:
Originally Posted by FrankieT/A View Post
Paul,
Even Butler is doing LS's now get with the program...

And LS's do not need to be built to chit to beat a Hellcat!
No they dont...my little 376 I did it with a cam and bolt ons..

  #9  
Old 04-18-2022, 12:32 PM
Scott Roberts Scott Roberts is offline
Suspended
 
Join Date: Oct 2006
Posts: 3,160
Default

Quote:
Originally Posted by PAUL K View Post
What kind of times did that Caddy run?

I've seen Hellcats run low elevens and faster. Not sure if out running a stock Hellcat with a built to chit LS would be impressive or not
Never tracked it.. dynoed ay 687whp... all I know is from a 60mph roll, I smoked a hellcat charger.
At 60mph, it lit up the tires...
Once I grabbed traction, I walked 5 cars on him... hard to swallow for ya but that's what happened. Never lost a race with the car..
I just sold it 2 weeks ago with the intent to be responsible... ( been 190mph in the car) ...
Now I'm looking at a several C6 ZO6 cars... 1000lbs lighter.. found several making 1000hp at the wheels... Pontiac much?

  #10  
Old 04-18-2022, 11:46 AM
Scarebird's Avatar
Scarebird Scarebird is offline
Ultimate Warrior
 
Join Date: Nov 2002
Location: Moita, Portugal
Posts: 5,387
Default

625hp, $10,299 for longblock

https://paceperformance.com/i-8396421

525hp, $9,533 straight from the factory with coils, etc.

https://paceperformance.com/i-7739382

Don't need big cubes here. Note the surface of the pistons: lotta Cray time there!




  #11  
Old 04-18-2022, 02:18 PM
Scott Roberts Scott Roberts is offline
Suspended
 
Join Date: Oct 2006
Posts: 3,160
Default

Quote:
Originally Posted by PAUL K View Post
Just asking in regards to a recent conversation I had with a buddy. He was yapping about how bad azz LS engines are and they will out power bigger Pontiac engines. I was just wondering if any folks had first hand experience with the bigger engines?

Perfer real world information over Google. I've found Google to lead one to believe the Pontiac 557 block with destruct at three hundred horsepower and be safe to a thousand.... Chit there is even info on Google that says Chicago doesn't have a crime problem.
Do I need to mention Dave Adkins 427ci promod running 5..90' s at 247mph?
Ls for the win...

Reply

Thread Tools
Display Modes

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

Forum Jump


All times are GMT -4. The time now is 11:20 PM.

 

About Us

The PY Online Forums is the largest online gathering of Pontiac enthusiasts anywhere in the world. Founded in 1991, it was also the first online forum for people to gather and talk about their Pontiacs. Since then, it has become the mecca of Pontiac technical data and knowledge that no other place can surpass.

 




Copyright © 2017