Forced Induction Superchargers | Turbochargers | Intercoolers

(In)sanity check

Thread Tools
 
Search this Thread
 
Old Sep 9, 2012 | 08:47 AM
  #1  
out2kayak's Avatar
Thread Starter
Teching In
 
Joined: Aug 2010
Posts: 10
Likes: 0
Default (In)sanity check

OK - this is my first venture into the world of turbos, but I have built many NA engines over the years.

I am putting a 427 LSX (all the good stuff - RHS block, Sonny B crank, AllPro heads, Oliver rods, etc.) for a twin turbo application.

Doing the math manually and using Garrett's web advisor (http://www.turbobygarrett.com/turbobygarrett/webadviser), it looks like two GTX4202R - 102mm, 56 trim, 0.60 A/R and a 1.15 turbine housing (housings are sold separately) is about right.

The target is about 1300HP in street trim (dialed down boost, pump-ish gas) and 2300HP in race trim.

It will have an air / air intercooler.

I plan on using it for Tx Mile / Silver State Classic runs / etc. as well as shows and other messing around (not a daily driver).

So, I am looking at 39.75 PSI boost in racing trim and 13.75 PSI in street trim.

Thoughts?



-- Joe
Reply




All times are GMT -5. The time now is 12:31 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