Forced Induction Superchargers | Turbochargers | Intercoolers

Do I need to intercool?

Thread Tools
 
Search this Thread
 
Old Aug 30, 2009 | 08:09 PM
  #1  
71 chevy's Avatar
Thread Starter
TECH Fanatic
iTrader: (18)
 
Joined: May 2008
Posts: 1,608
Likes: 1
From: Dallas, Tejas
Default Do I need to intercool?

im gonna be running a bone stock 5.3 with an mp t70.

I have a Snow performance stage 2 kit with dual nozzles.

Im planning to start out around 8psi boost but go up to 15psi

I believe stock 5.3s have around 9.5:1 compression ratio

so
can I get by without an intercooler?
and do I want to run 50/50 meth/water, or go straight meth?
Reply
Old Aug 30, 2009 | 08:44 PM
  #2  
1320's Avatar
TECH Fanatic
iTrader: (6)
 
Joined: Dec 2001
Posts: 1,114
Likes: 0
From: LV NV
Default

intercooler = yes.

50/50. or -32 windshield washer fluid. If you mix, make sure you stay consistent.
Reply
Old Aug 30, 2009 | 10:25 PM
  #3  
LS1Silverado05's Avatar
TECH Addict
20 Year Member
Photogenic
Photoriffic
Liked
iTrader: (41)
 
Joined: Jun 2005
Posts: 2,370
Likes: 1
From: Classified
Default

You can run an intercooler so cheap and easy I cant come up with a reason why anyone wouldnt...
Reply
Old Aug 30, 2009 | 10:55 PM
  #4  
DeltaT's Avatar
TECH Addict
iTrader: (5)
 
Joined: Jun 2005
Posts: 2,404
Likes: 1
Default

IC is the cake, meth is the frosting. Deal with the cake first.

Jim
Reply
Old Aug 31, 2009 | 04:43 AM
  #5  
EPP's Avatar
EPP
FormerVendor
iTrader: (22)
 
Joined: Mar 2003
Posts: 13,063
Likes: 2
Default

I agree, do the intercooler. We don't run anything less than 100% methanol, we've seen on our dyno that less than 100% puts the spark out, and reduces horsepower. Bob
Reply
Old Aug 31, 2009 | 07:10 AM
  #6  
BLNLS1/RX7's Avatar
TECH Fanatic
iTrader: (2)
 
Joined: Sep 2006
Posts: 1,225
Likes: 1
From: Fishers,IN.
Default

Yes you do.
Reply
Old Aug 31, 2009 | 03:33 PM
  #7  
BigRich954RR's Avatar
TECH Fanatic
iTrader: (1)
 
Joined: Nov 2007
Posts: 1,193
Likes: 0
From: NJ
Default

100% meth dont mixs. Start the meth at 1 -2 psi. I would still do the intercooler

But if you have high GPH nozzles and a good pump. and no room for intercooler you could get away with out it .
Reply
Old Aug 31, 2009 | 03:47 PM
  #8  
dschmittie1's Avatar
10 Second Club
iTrader: (64)
 
Joined: Aug 2005
Posts: 2,344
Likes: 2
From: York, PA
Default

I am also running straight Meth. Well 99.9% per the container. Also the intercooler does help.
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 Aug 31, 2009 | 10:00 PM
  #9  
71 chevy's Avatar
Thread Starter
TECH Fanatic
iTrader: (18)
 
Joined: May 2008
Posts: 1,608
Likes: 1
From: Dallas, Tejas
Default

thanks guys. I think youve scared me into putting an intercooler on my build sheet.

what is a good one, inexpensive one for my needs (t70) that will cool enough without too much pressure drop?
Reply
Old Sep 1, 2009 | 08:07 AM
  #10  
moehorsepower's Avatar
TECH Addict
iTrader: (3)
 
Joined: Feb 2003
Posts: 2,334
Likes: 17
From: Texas
Default Intercooler

pm me, I have a brand new one that I will be selling...
Reply
Old Sep 4, 2009 | 04:55 PM
  #11  
67Firebird455's Avatar
12 Second Club
20 Year Member
Photogenic
Photoriffic
Liked
iTrader: (27)
 
Joined: Sep 2004
Posts: 2,552
Likes: 12
From: Visalia, California
Default

Run an intercooler, shoot, even an ebay cooler with a 4" core.
Reply
Old Sep 7, 2009 | 12:42 PM
  #12  
71 chevy's Avatar
Thread Starter
TECH Fanatic
iTrader: (18)
 
Joined: May 2008
Posts: 1,608
Likes: 1
From: Dallas, Tejas
Default

guys, where can I get an education on intercooler sizing and type, etc for my needs?

I heard bar and plate is better and I also heard to want the inlet outlet on the long side vs the short side, but all the ones I see on ebay are tiny.

if I get short side entry exit , will a bar and plate 24x12x3 be enough?
Reply
Old Sep 7, 2009 | 08:18 PM
  #13  
dschmittie1's Avatar
10 Second Club
iTrader: (64)
 
Joined: Aug 2005
Posts: 2,344
Likes: 2
From: York, PA
Default

I run a 12x24x4 bar and plate ebay intercooler. It works great I would get a 4" core intercooler.
Reply
Old Sep 7, 2009 | 10:44 PM
  #14  
71 chevy's Avatar
Thread Starter
TECH Fanatic
iTrader: (18)
 
Joined: May 2008
Posts: 1,608
Likes: 1
From: Dallas, Tejas
Default

Originally Posted by dschmittie1
I run a 12x24x4 bar and plate ebay intercooler. It works great I would get a 4" core intercooler.
thanks buddy. I think I'll try that.
Reply
Old Sep 9, 2009 | 11:01 PM
  #15  
71 chevy's Avatar
Thread Starter
TECH Fanatic
iTrader: (18)
 
Joined: May 2008
Posts: 1,608
Likes: 1
From: Dallas, Tejas
Default

ok, here is my developing dilemma.

Im reading that the intercooler is not needed at low boost pressures. Im also reading that the ubiquitous ebay 31x12x3 flows 700cfm(I cant fit the 4" model). at higher pressures, where an intercooler is needed my cfm needs are 864

Im wondering what actually happens to those 164 cfm and if I would be better of going without the intercooler and throwing a bunch of meth at it

Last edited by 71 chevy; Sep 9, 2009 at 11:12 PM.
Reply
Old Sep 9, 2009 | 11:53 PM
  #16  
stevied916's Avatar
TECH Enthusiast
iTrader: (30)
 
Joined: Jul 2007
Posts: 546
Likes: 1
From: Sacramento, CA
Default

you don't want to rely on only meth. If the nozzle clogs or the tank runs out you're screwed. My friend melted 3 of his pistons because he was running 7psi and the meth tank ran out during a hard run
Reply
Old Sep 10, 2009 | 12:50 AM
  #17  
DeltaT's Avatar
TECH Addict
iTrader: (5)
 
Joined: Jun 2005
Posts: 2,404
Likes: 1
Default

Im reading that the intercooler is not needed at low boost pressures. Im also reading that the ubiquitous ebay 31x12x3 flows 700cfm(I cant fit the 4" model). at higher pressures, where an intercooler is needed my cfm needs are 864
It will flow 864 but at a higher pressure drop than you would want. That is an IC with not that many cross channels, maybe 18 or so, so it has a lower hot air flow area than an IC with the tanks on the top and bottom, like mine:



Even though the core measures 23"Wx6"Tx4.5" deep, it has 36 vertical channels for hot air and has a cfm of 2074. The same dimension core from the same company (Bell) that has side-to-side channels flows only in the mid-700 range with the same pressure drop.

Jim
Reply




All times are GMT -5. The time now is 09:59 AM.

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