Generation III External Engine LS1 | LS6 | Bolt-Ons | Intakes | Exhaust | Ignition | Accessories
Sponsored by:
Sponsored by:

Lookin for Advice

Thread Tools
 
Search this Thread
 
Old Sep 28, 2019 | 08:09 AM
  #1  
marshchevelle's Avatar
Thread Starter
Teching In
10 Year Member
 
Joined: Nov 2013
Posts: 9
Likes: 0
Default Lookin for Advice

I have a stock LS1 auto out of a 98 firebird .I'm building a 85 S10 autocross truck to run SCCA cam T ,Looking for advice for the best bolt on combo for low to mid range toque ,we have SSW long tube headers with H pipe,3.73 rear .Unfortunately we didn't make it out this year so looking for some winter upgrades Thanks for the help .

Reply
Old Sep 28, 2019 | 10:15 AM
  #2  
G Atsma's Avatar
TECH Senior Member
5 Year Member
Liked
Loved
Community Favorite
 
Joined: Jun 2016
Posts: 22,293
Likes: 3,617
From: Central Cal.
Default

How much power are you looking to gain?
Reply
Old Sep 28, 2019 | 12:05 PM
  #3  
marshchevelle's Avatar
Thread Starter
Teching In
10 Year Member
 
Joined: Nov 2013
Posts: 9
Likes: 0
Default

Eventually Id like to be in the 550 to 600 of torque but I know that aint happen with bolt on stuff . The ls is new to me ,old big block guy Just curious on witch way to start Thanks
Reply
Old Sep 29, 2019 | 02:29 PM
  #4  
Darth_V8r's Avatar
Moderator
10 Year Member
Liked
Loved
Community Favorite
iTrader: (4)
 
Joined: Jul 2014
Posts: 10,450
Likes: 1,873
From: My own internal universe
Default

Start with a short block. 550-600 lbs is 427-454 territory. Unless you are talking flywheel in which case you can look at 383-408 range.

Alternately you could go magnuson
Reply
Old Sep 29, 2019 | 03:38 PM
  #5  
Che70velle's Avatar
ModSquad
10 Year Member
Community Builder
Liked
Loved
iTrader: (6)
 
Joined: Jan 2012
Posts: 7,832
Likes: 5,177
From: Dawsonville Ga.
Default

I’m guessing the elbow on your air intake is just for mock-up?
Reply
Old Sep 29, 2019 | 06:01 PM
  #6  
marshchevelle's Avatar
Thread Starter
Teching In
10 Year Member
 
Joined: Nov 2013
Posts: 9
Likes: 0
Default

The truck is going to weigh around 3000 when complete so 400 should be fine ,and my elbow I think I,m on my 3 or 4 attempt at a 4'' 90 from summit and jegs I'd want to send it to them and ask for something just like this. That set up was getting the motor started Thank
Reply
Old Sep 29, 2019 | 09:14 PM
  #7  
Darth_V8r's Avatar
Moderator
10 Year Member
Liked
Loved
Community Favorite
iTrader: (4)
 
Joined: Jul 2014
Posts: 10,450
Likes: 1,873
From: My own internal universe
Default

400 tq rear wheel on a 346 is doable but not a layup. You can either do bolt ons to the extreme or Heads/cam. Heads cam will bias your torque to higher rpm so buyer beware.

Bolt ons extreme would mean headers, intake, EWP, manual steering, rockers, light clutch if it is a stick, ATI underdrive damper.
Reply
Old Sep 29, 2019 | 11:45 PM
  #8  
LLLosingit's Avatar
TECH Junkie
10 Year Member
Liked
Loved
Community Favorite
iTrader: (4)
 
Joined: Aug 2013
Posts: 3,845
Likes: 487
From: Iowa
Default

Have you put a stall converter in it yet or is it stock?
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




All times are GMT -5. The time now is 01:55 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