Forced Induction Superchargers | Turbochargers | Intercoolers

Big Cam users - Timing?

Thread Tools
 
Search this Thread
 
Old Aug 31, 2015 | 01:27 PM
  #1  
BigBadWhitey's Avatar
Thread Starter
TECH Enthusiast
15 Year Member
iTrader: (3)
 
Joined: Jul 2008
Posts: 654
Likes: 7
Default Big Cam users - Timing?

Hey guys, couple questions because im not getting much help in the PCM/Tuning page:

Ive got my new stroked LS2 with pro charger all installed, and im trying to crank it over.
It cranks, but she doesnt actually start up.

Setup as follows:
402 CI
243 heads unported
237/25x cam
Siemens deka 80lb injectors (running 58psi base pressure, so theyd be 91lbs?)
Procharger d1 with 3.5 pulley
2 bar map, SD, no MAF

Im wondering if someone can look at my tables, and tell me if they look around correct for this setup?


















Any and all help appreciated, if you need anymore info/tables/pics please tell me and I will post them ASAP. I just really want this thing to run.
Reply
Old Aug 31, 2015 | 01:59 PM
  #2  
ablakez28's Avatar
8 Second Club
iTrader: (9)
 
Joined: May 2004
Posts: 790
Likes: 1
Default

I would change the cells that are at 15* in your idle range to 26* unless they are like that for a reason.

Also I would try raising the cranking PW

Have you verified fuel and spark?
Reply
Old Aug 31, 2015 | 02:40 PM
  #3  
BigBadWhitey's Avatar
Thread Starter
TECH Enthusiast
15 Year Member
iTrader: (3)
 
Joined: Jul 2008
Posts: 654
Likes: 7
Default

Originally Posted by ablakez28
I would change the cells that are at 15* in your idle range to 26* unless they are like that for a reason.

Also I would try raising the cranking PW

Have you verified fuel and spark?
Im not sure why they are set to 15, the tune that it came with was just set to that.

With a noid light hooked up i get flashing, and if i pull a wire and hook it up to a spare plug it sparks so i expect im getting both.

Any idea what the PW should go up to? It smells quite a bit like fuel when i turn it over, I almost thought the cranking PW needed to come down (but again, im new to this so..)
Reply
Old Aug 31, 2015 | 10:21 PM
  #4  
BigBadWhitey's Avatar
Thread Starter
TECH Enthusiast
15 Year Member
iTrader: (3)
 
Joined: Jul 2008
Posts: 654
Likes: 7
Default

Update: Set the timing in the 77-103kpa range up to about 32 degrees and she caught pretty quick, made a about 5 seconds of rotation under its own power (at below idle rpm, maybe 650ish) and then died. Getting a bit of backfire, I feel like my fuel table is much higher than it should be.
Can anyone confirm/shoot down my VE table for 2 bar? I feel its more like a 3 bar table.

Last edited by BigBadWhitey; Aug 31, 2015 at 10:26 PM.
Reply




All times are GMT -5. The time now is 02:59 PM.

story-0
6 Gifts Neither Your Dad Nor Grad Will Shove Into the 'Trinket Drawer'

Don't get dad new socks or a grill brush this year.

By Brett Foote | 2026-06-09 14:55:56


VIEW MORE
story-1
Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?

Slideshow: We take a close look at the ONE and Artidiag 800BT2 diagnostic tools from Topdon and the reasons to buy one over the other.

By Pouria Savadkouei | 2026-05-28 11:05:11


VIEW MORE
story-2
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine

Slideshow: The controversial Ferrari F6 swaps its original flat-12 for a Corvette Z06-derived LT4 V8 and sends power to four rear wheels through a custom-built drivetrain.

By Verdad Gallardo | 2026-05-26 18:23:54


VIEW MORE
story-3
7 Most Reliable High-Performance Engines GM Has Ever Built

Slideshow:These GM engines didn't just make huge power, they survived abuse, boost, track days, and six-digit mileage with a reputation for refusing to quit.

By Verdad Gallardo | 2026-05-21 16:45:27


VIEW MORE
story-4
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-5
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-6
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-7
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-8
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-9
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