LT1-LT4 Modifications 1993-97 Gen II Small Block V8

300 rwhp ?

Thread Tools
 
Search this Thread
 
Old Apr 24, 2014 | 08:16 PM
  #1  
350 groundpounder's Avatar
Thread Starter
TECH Fanatic
10 Year Member
Liked
Loved
Community Favorite
iTrader: (5)
 
Joined: Jan 2014
Posts: 1,157
Likes: 28
From: Michigan
Default 300 rwhp ?

Another HP Question lol

Is it possible to hit 300 rear wheel horsepower with a 96 z28 6 speed stock internals LT1.

Right now car has- CAI, 2.5 inch straight pipes after the I pipe muffler.

Going to add- Throttle body bypass, air foil, maybe the 160 degree thermostat with fans that turn on early, headers, Y-pipe, and a good dyno tune. I don't want to put in a cam or rockers yet!

Do you think it might hit 300rwhp with all these mods done to it?
Reply
Old Apr 24, 2014 | 08:17 PM
  #2  
F0x Slaughter's Avatar
TECH Fanatic
 
Joined: Sep 2010
Posts: 1,037
Likes: 2
Default

Bolt ons will make 300rwhp through a M6.
Reply
Old Apr 25, 2014 | 09:29 AM
  #3  
350 groundpounder's Avatar
Thread Starter
TECH Fanatic
10 Year Member
Liked
Loved
Community Favorite
iTrader: (5)
 
Joined: Jan 2014
Posts: 1,157
Likes: 28
From: Michigan
Default

I was guessing maybe 280 at the wheel if I am lucky. I was thinking that a small cam might be needed to put down 300 at the wheel.
Reply
Old Apr 25, 2014 | 09:38 AM
  #4  
SS RRR's Avatar
Village Troll
20 Year Member
Liked
Loved
Community Favorite
iTrader: (2)
 
Joined: Oct 2002
Posts: 11,111
Likes: 598
From: Jackstandican
Default

Originally Posted by F0x Slaughter
Bolt ons will make 300rwhp through a M6.
This and without a tune.
Reply
Old Apr 25, 2014 | 09:54 AM
  #5  
HellTeeOne's Avatar
TECH Regular
 
Joined: Sep 2003
Posts: 442
Likes: 3
From: Raleigh, NC
Default

Un-tuned bolt on cars routinely make 290+
Reply
Old Apr 25, 2014 | 10:17 AM
  #6  
TravisMcGill2000's Avatar
11 Second Club
iTrader: (2)
 
Joined: Apr 2007
Posts: 1,722
Likes: 1
From: chats,ga
Default

Originally Posted by 350 groundpounder
I was guessing maybe 280 at the wheel if I am lucky. I was thinking that a small cam might be needed to put down 300 at the wheel.
You should be close to 300rwhp with those mods. Could always do set of springs for a hot cam and 1.7rr. That would get you 300 easy. Spring be around 50 used and probly 200 to 300 for rockers.
Reply
Old Apr 25, 2014 | 12:23 PM
  #7  
lt1-xjs's Avatar
TECH Fanatic
15 Year Member
 
Joined: Jun 2007
Posts: 1,255
Likes: 11
From: centerville, ohio
Default

Originally Posted by 350 groundpounder
I was guessing maybe 280 at the wheel if I am lucky. I was thinking that a small cam might be needed to put down 300 at the wheel.
You won't need a cam, but I doubt you'll make it without rockers and springs.
Reply
Old Apr 25, 2014 | 02:27 PM
  #8  
93M6Formula's Avatar
TECH Fanatic
 
Joined: Aug 2008
Posts: 1,740
Likes: 2
From: Nebraska
Default

I put down 294 with boltons.
Reply
LS1 Tech Stories

The Best V8 Stories One Small Block at Time

story-0

Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

 Verdad Gallardo
story-1

6 Common C5 Corvette Failures and What's Involved In Repairing Them

 Pouria Savadkouei
story-2

Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

 Verdad Gallardo
story-3

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

 Pouria Savadkouei
story-4

Top 10 Most Powerful Chevy Trucks Ever Made!

 
story-5

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

 Verdad Gallardo
story-6

Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

 Verdad Gallardo
story-7

Awesome K5 Blazer Restomod Comes With C7 Corvette Power

 Verdad Gallardo
story-8

10 Camaros You Should Never Buy

 
story-9

10 LS Engine Myths That Refuse to Die

 Verdad Gallardo
Old Apr 25, 2014 | 03:37 PM
  #9  
zlicious94's Avatar
TECH Apprentice
iTrader: (1)
 
Joined: Jan 2007
Posts: 321
Likes: 1
From: Troutdale,OR
Default

I make 300rwhp and have ran a 13.0!
Reply
Old Apr 27, 2014 | 08:02 AM
  #10  
n2oblkz's Avatar
TECH Fanatic
iTrader: (1)
 
Joined: Mar 2004
Posts: 996
Likes: 2
From: Versailles, IN
Default

I made 300 with exhaust and bolt-on's and no tune.
Reply
Old Apr 27, 2014 | 09:42 PM
  #11  
smitty2919's Avatar
TECH Addict
 
Joined: Feb 2012
Posts: 2,103
Likes: 21
Default

311/346 through my 95 M6 with 60K mi

PS longtubes
Catless
Borla CB
air foil
custom CAI
stock gears
dyno tune
Reply
Old Apr 28, 2014 | 11:18 AM
  #12  
350 groundpounder's Avatar
Thread Starter
TECH Fanatic
10 Year Member
Liked
Loved
Community Favorite
iTrader: (5)
 
Joined: Jan 2014
Posts: 1,157
Likes: 28
From: Michigan
Default

Quarter Mile Times with those 300 rwhp cars?????
Reply
Old Apr 28, 2014 | 11:39 AM
  #13  
bowtienut's Avatar
TECH Fanatic
15 Year Member
iTrader: (1)
 
Joined: Mar 2007
Posts: 1,685
Likes: 5
From: Bright, IN
Default

Originally Posted by 350 groundpounder
Quarter Mile Times with those 300 rwhp cars?????
A best of 12.36 @ 107 mph. 3900+ lbs. 309 STD rwhp.
Reply
Old Apr 28, 2014 | 12:21 PM
  #14  
Tbird232ci's Avatar
TECH Regular
iTrader: (4)
 
Joined: Jun 2009
Posts: 408
Likes: 2
From: Cockeysville, Md
Default

I made 294 with bolt ons and a mail order tune.

Remember, every dyno will read differently.
Reply
Old Apr 28, 2014 | 12:29 PM
  #15  
lt1-xjs's Avatar
TECH Fanatic
15 Year Member
 
Joined: Jun 2007
Posts: 1,255
Likes: 11
From: centerville, ohio
Default

Originally Posted by 350 groundpounder
Quarter Mile Times with those 300 rwhp cars?????
I'm with bowtienut. I'd expect low to mid 12's at least.
Best 12.82 @ 104 also 309 rwhp pushing 3900#
Reply
Old Apr 28, 2014 | 04:33 PM
  #16  
93M6Formula's Avatar
TECH Fanatic
 
Joined: Aug 2008
Posts: 1,740
Likes: 2
From: Nebraska
Default

Originally Posted by bowtienut
A best of 12.36 @ 107 mph. 3900+ lbs. 309 STD rwhp.
How the hell..... I can barely get a 13.3 with 294 HP. My 60's suck pretty bad though. Getting slicks this year and some drag shocks.
Reply
Old Apr 28, 2014 | 04:54 PM
  #17  
96capricemgr's Avatar
11 Second Club
iTrader: (1)
 
Joined: Sep 2004
Posts: 11,975
Likes: 15
Default

Pat is very skilled at getting the most from a setup so I wouldn't expect many folks to equal his results but they do speak volumes about what is possible.

Dynos also correct for weather so while HP numbers should be consistent across the country track conditions aren't. He gets nice east coast weather to race in.

That is in NO WAY a comment against him, same track same day I believe his 350 Impala will wax most stroker f-bodies. Just saying that I wouldn't expect a relative novice to get a bolton f-body to low 12s in Nebraska.
What is the MPH? That should tell us something about potential. 13.3 at 103 says it wont go much quicker, but 13.3 at 110mph says there is a LOT of 60ft time to be gained.
Reply
Old Apr 28, 2014 | 06:30 PM
  #18  
smitty2919's Avatar
TECH Addict
 
Joined: Feb 2012
Posts: 2,103
Likes: 21
Default

I dunno 1/4 mile times on my car...I don't care about drag racing.
Reply
Old Apr 28, 2014 | 06:42 PM
  #19  
bowtienut's Avatar
TECH Fanatic
15 Year Member
iTrader: (1)
 
Joined: Mar 2007
Posts: 1,685
Likes: 5
From: Bright, IN
Default

Originally Posted by 93M6Formula
How the hell..... I can barely get a 13.3 with 294 HP. My 60's suck pretty bad though. Getting slicks this year and some drag shocks.
I'm an engineer geek I get a kick out of tweaking things to the max, and it helped that I had a friendly rivalry going for a few years with an east coast guy for the title of "world's fastest bolt-on ImpalaSS". Believe it or not, there was more in it than those 12.3x passes show. After a few more improvements, it was running 12.4x's and 12.5x's regularly here at 1000' Midwest tracks for a couple of years after that. I just never made it back east for some more glory passes.
Reply
Old Apr 28, 2014 | 10:18 PM
  #20  
F0x Slaughter's Avatar
TECH Fanatic
 
Joined: Sep 2010
Posts: 1,037
Likes: 2
Default

**** I trapped 103 and ran 13.8 best a couple years ago.
That was only with exhaust, intake, short throw, home tune.
60ft was 2.4 though haha. It was at a local track not a professional track.

I haven't ran this year but I have full suspension, 4.10s, and 10.5 slicks and 4.5 skinnies.
Reply




All times are GMT -5. The time now is 06:58 PM.

story-0
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

Slideshow: This heavily modified 1971 Camaro mixes classic muscle car styling with a fifth-generation Camaro interior and modern LS3 power.

By Verdad Gallardo | 2026-05-12 18:06:42


VIEW MORE
story-1
6 Common C5 Corvette Failures and What's Involved In Repairing Them

Slideshow: From wobbling harmonic balancers to failed EBCMs, these are the issues that define long-term C5 ownership and what repairs typically involve.

By Pouria Savadkouei | 2026-05-07 18:44:57


VIEW MORE
story-2
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

Slideshow: A modern Camaro transformed into a retro icon, this limited-run "Bandit" build blends nostalgia with brute force in a way few revivals manage.

By Verdad Gallardo | 2026-04-21 13:57:02


VIEW MORE
story-3
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

Slideshow: Cadillac didn't just crash the high-performance luxury vehicle party, it showed up loud, supercharged, and occasionally a little unhinged...

By Pouria Savadkouei | 2026-04-16 10:05:15


VIEW MORE
story-4
Top 10 Most Powerful Chevy Trucks Ever Made!

Slideshow: Top ten most powerful Chevy trucks ever made

By | 2026-03-25 09:22:26


VIEW MORE
story-5
Hennessey's New Supercharged Silverado ZR2 Has 700 HP

Slideshow: Hennessey has turned the Silverado ZR2 into a 700-hp off-road monster with supercharged V8 power and a limited production run.

By Verdad Gallardo | 2026-03-24 18:57:52


VIEW MORE
story-6
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

Slideshow: A one-off sports car that looks like a vintage Italian exotic-but hides a C6 Corvette underneath-just sold for the price of a new mid-engine Corvette.

By Verdad Gallardo | 2026-03-23 18:53:41


VIEW MORE
story-7
Awesome K5 Blazer Restomod Comes With C7 Corvette Power

Slideshow: A heavily reworked 1972 K5 Blazer swaps its off-road roots for a low-slung street-focused build with modern V8 power.

By Verdad Gallardo | 2026-03-09 18:08:45


VIEW MORE
story-8
10 Camaros You Should Never Buy

Slideshow: There are thousands of used Camaros on the market but we think you should avoid these 10

By | 2026-02-17 17:09:30


VIEW MORE
story-9
10 LS Engine Myths That Refuse to Die

Slideshows: Which one of these myths do you believe?

By Verdad Gallardo | 2026-01-28 18:10:11


VIEW MORE