Generation IV External Engine LS2 | LS3 | LS7 | L92 | Bolt-Ons | Intakes | Exhaust | Ignition | Accessories
Sponsored by:
Sponsored by:

MAP Sensor for TBSS?

Thread Tools
 
Search this Thread
 
Old Jun 13, 2022 | 06:11 PM
  #1  
Utinator's Avatar
Thread Starter
12 Second Club
5 Year Member
Photogenic
Photoriffic
Shutterbug
 
Joined: Dec 2017
Posts: 1,034
Likes: 223
From: San Antonio
Default MAP Sensor for TBSS?

I need to find the correct MAP Sensor for a TBSS/NNBS intake manifold. The engine I bought came with a box of loose parts that I have been sifting through. I found a MAP Sensor (see link below), but it doesn't seem to fit on the intake. Does anyone know the correct MAP sensor for the TBSS intake?

Amazon Amazon
Reply
Old Jun 13, 2022 | 06:14 PM
  #2  
Utinator's Avatar
Thread Starter
12 Second Club
5 Year Member
Photogenic
Photoriffic
Shutterbug
 
Joined: Dec 2017
Posts: 1,034
Likes: 223
From: San Antonio
Default

The link doesn't want to work correctly. Let's try this:



Reply
Old Jun 13, 2022 | 06:25 PM
  #3  
G Atsma's Avatar
TECH Senior Member
5 Year Member
Liked
Loved
Community Favorite
 
Joined: Jun 2016
Posts: 22,298
Likes: 3,619
From: Central Cal.
Default

Have you tried Rock Auto? Give them whatever year Trailblazer SS you have the manifold for and it should come up.
I just looked up for a 2006 Trailblazer. A dozen different ones for widely varying prices.
But get the AC Delco (2134434, $55.79) one for best results
Reply
Old Jun 13, 2022 | 06:32 PM
  #4  
Utinator's Avatar
Thread Starter
12 Second Club
5 Year Member
Photogenic
Photoriffic
Shutterbug
 
Joined: Dec 2017
Posts: 1,034
Likes: 223
From: San Antonio
Default

Both AutoZone and Summit seem to point to this one: https://www.summitracing.com/parts/DFP-PS10000#overview

How do you tell if it's a 1-bar, 2-bar, or 3-bar? Let's say I want to run 20lbs of boost. How many bars is that?
Reply
Old Jun 13, 2022 | 06:47 PM
  #5  
vht's Avatar
vht
TECH Apprentice
 
Joined: Sep 2013
Posts: 355
Likes: 19
Default

12643955 AC/Delco is the one you want I think. Sloppy has a listing of all the map sensors on their site I believe.
Reply
Old Jun 13, 2022 | 07:54 PM
  #6  
ChopperDoc's Avatar
TECH Fanatic
10 Year Member
 
Joined: Oct 2014
Posts: 1,220
Likes: 179
From: Virginia
Default

Originally Posted by Utinator
Both AutoZone and Summit seem to point to this one: https://www.summitracing.com/parts/DFP-PS10000#overview

How do you tell if it's a 1-bar, 2-bar, or 3-bar? Let's say I want to run 20lbs of boost. How many bars is that?
You would need a 3 bar, and some holy water to bless the stock internals.
Reply
Old Jun 14, 2022 | 08:36 PM
  #7  
Utinator's Avatar
Thread Starter
12 Second Club
5 Year Member
Photogenic
Photoriffic
Shutterbug
 
Joined: Dec 2017
Posts: 1,034
Likes: 223
From: San Antonio
Default

Originally Posted by ChopperDoc
You would need a 3 bar, and some holy water to bless the stock internals.
Lol. I added extra ring gap. It should be good for 20 lbs. with the gen-4 rods.
Reply
Old Jun 18, 2022 | 02:15 AM
  #8  
ChopperDoc's Avatar
TECH Fanatic
10 Year Member
 
Joined: Oct 2014
Posts: 1,220
Likes: 179
From: Virginia
Default

Originally Posted by Utinator
Lol. I added extra ring gap. It should be good for 20 lbs. with the gen-4 rods.
At a stock compression of around 10.7:1 you might want to also straight up consider other fuels. 93 octane starts detonating around 8:6:1 (effective compression) and at 20 pounds you’ll be way north of that, depending on your cam selection. That means when the intake closes.

I’m not trying to insult your intelligence here, but from your post there’s not much actual information. Unless you run negative spark values on a build as stated so far, it will inevitably fail. Best case for a build going for that much boost is reducing your SCR to around 8-9:1. Lower the better honestly. I’d lean towards 8:1 for 20#.

You do you though. Take that stock block to 20 and report back.
Reply
LS1 Tech Stories

The Best V8 Stories One Small Block at Time

story-0

7 Most Reliable High-Performance Engines GM Has Ever Built

 Verdad Gallardo
story-1

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

 Verdad Gallardo
story-2

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

 Pouria Savadkouei
story-3

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

 Verdad Gallardo
story-4

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

 Pouria Savadkouei
story-5

Top 10 Most Powerful Chevy Trucks Ever Made!

 
story-6

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

 Verdad Gallardo
story-7

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

 Verdad Gallardo
story-8

Awesome K5 Blazer Restomod Comes With C7 Corvette Power

 Verdad Gallardo
story-9

10 Camaros You Should Never Buy

 
Old Jun 19, 2022 | 08:42 AM
  #9  
Utinator's Avatar
Thread Starter
12 Second Club
5 Year Member
Photogenic
Photoriffic
Shutterbug
 
Joined: Dec 2017
Posts: 1,034
Likes: 223
From: San Antonio
Default

I had planned on selling it after it gets dyno tested, so I don't know if it will see boost or not. I was just trying to "prepare" it for boost, just in case it gets the juice later on. You're probably right about the fuel and compression at 20lbs of boost. It really won't need 20lbs to make too much power for the street anyway. I think 14-16psi would be more than plenty. I figured that if I was going to buy a MAP sensor, I might as well get one that can be used with boost too.

The only calculator I could find for dynamic compression, uses the valve events at .006" lift. All the cam specs are listed at .050" lift. This engine has the BTR stage-2 truck cam (212/218-113). I'm not sure what the dynamic compression comes out to with this camshaft.
Reply




All times are GMT -5. The time now is 07:51 PM.

story-0
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-1
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-2
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-3
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-4
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-5
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-6
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-7
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-8
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-9
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