Carbureted LSX Forum Carburetors | Carbed Intakes | Carb Tuning Tips for LSX Enthusiasts

Carb size help??

Thread Tools
 
Search this Thread
 
Old Sep 19, 2011 | 06:14 PM
  #1  
Roller406Bu's Avatar
Thread Starter
On The Tree
iTrader: (1)
 
Joined: Apr 2006
Posts: 171
Likes: 0
From: Kentucky
Default Carb size help??

I have stock lq4 6.0 with a magic stick 4 cam on a 110 from texas speed, victor jr intake, 750 holley dp, pacesetter longtubes 1 3/4, trickflow as cast 220 heads, yank 3600 nitrous convertor, 4.10 gears, in a 3480 pound car..78 malibu...What size carb do I really need?
Reply
Old Sep 19, 2011 | 06:34 PM
  #2  
GC99TA's Avatar
TECH Fanatic
20 Year Member
iTrader: (30)
 
Joined: Aug 2003
Posts: 1,555
Likes: 3
From: Central VA
Default

Well, the easiest thing to do would be to go to Prosystems' website and fill out and submit one of their carb build sheet forms. Patrick will get back with you very quickly, and while he's not gonna tell you part by part what your carb will consist of, he will likely tell you what main body he'd use and approximately what CFM he'd be shooting for.

My car is a stock bottom end 6.0L with L92 heads, a mild cam, Vic Jr, stepped long tubes, and a 5000 stall in a 3450 race weight car. The carb he built me is based around a 950HP main body and flows 846 CFM according to Patrick. I haven't had it to the track yet, but I'm real pleased with how the carb acts on the street.
Reply
Old Sep 19, 2011 | 07:01 PM
  #3  
Roller406Bu's Avatar
Thread Starter
On The Tree
iTrader: (1)
 
Joined: Apr 2006
Posts: 171
Likes: 0
From: Kentucky
Default

Originally Posted by GC99TA
Well, the easiest thing to do would be to go to Prosystems' website and fill out and submit one of their carb build sheet forms. Patrick will get back with you very quickly, and while he's not gonna tell you part by part what your carb will consist of, he will likely tell you what main body he'd use and approximately what CFM he'd be shooting for.

My car is a stock bottom end 6.0L with L92 heads, a mild cam, Vic Jr, stepped long tubes, and a 5000 stall in a 3450 race weight car. The carb he built me is based around a 950HP main body and flows 846 CFM according to Patrick. I haven't had it to the track yet, but I'm real pleased with how the carb acts on the street.
just submitted a build sheet, thanks man...
Reply
Old Sep 19, 2011 | 08:32 PM
  #4  
Roller406Bu's Avatar
Thread Starter
On The Tree
iTrader: (1)
 
Joined: Apr 2006
Posts: 171
Likes: 0
From: Kentucky
Default

should I change my cam out as well?
Reply
Old Sep 19, 2011 | 10:27 PM
  #5  
ZONES89RS's Avatar
In-Zane Moderator
15 Year Member
iTrader: (25)
 
Joined: Jan 2007
Posts: 11,941
Likes: 33
From: Conroe, Texas
Default

The cam will work fine and a 750 will also do well. a larger carb will get a touch more HP but cost a bit of low end TQ that is not noticeable by the butt-o-meter.
Reply




All times are GMT -5. The time now is 01:25 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