Speed Inc. 348 Short Block

Reply Subscribe

Thread Tools

Search this Thread

Jun 8, 2005 | 01:13 PM

YOUR03COBRA8ME

Thread Starter

On The Tree

Joined: Feb 2004

Posts: 104

Likes: 0

From: Corol Springs Florida

Speed Inc. 348 Short Block?

What do you guys think of this set up it seems reasonable
I want around 600hp boost like 15psi but i want it on the safe side

Last edited by YOUR03COBRA8ME; Jun 8, 2005 at 01:23 PM.

Jun 8, 2005 | 02:18 PM

LSs1Power

TECH Addict

iTrader: (5)

Joined: Mar 2002

Posts: 2,320

Likes: 0

From: VA

15psi in a 348 LS1 should put u over 700rwhp with the right Turbo. If u just want 600rwhp then 10-11psi should do it with the right Turbo.

Jun 8, 2005 | 02:35 PM

YOUR03COBRA8ME

Thread Starter

On The Tree

Joined: Feb 2004

Posts: 104

Likes: 0

From: Corol Springs Florida

As far as this motor goes good bad or other

Jun 8, 2005 | 02:37 PM

BOOSTNSS

Banned

iTrader: (1)

Joined: May 2005

Posts: 280

Likes: 0

From: Bourne Mass

Quote:

Originally Posted by YOUR03COBRA8ME

As far as this motor goes good bad or other

forged bottom end should be no prob for 600rwhp a stock crank is all that is needed too

Jun 8, 2005 | 02:55 PM

Wicked_Hugger99

TECH Addict

iTrader: (1)

Joined: Apr 2004

Posts: 2,227

Likes: 1

From: enterprise, AL

motor should be just fine

You should hit ur goal fairly easy

Jun 8, 2005 | 03:12 PM

SUPER DAVES Z

TECH Apprentice

iTrader: (6)

Joined: Nov 2003

Posts: 397

Likes: 0

From: Bastrop , TEXAS

You should have no problems with a short block built by them, especially with only 600 rwhp. They do quality work. I think they have one of their 348's putting 840+ rwhp with one of their turbo kits. (reference wicked's car!!

)

Jun 8, 2005 | 03:16 PM

ddnspider

10 Second Club

iTrader: (26)

Joined: Aug 2004

Posts: 14,628

Likes: 1,778

From: FL

im getting a very similar setup...are you sure about that 700rwhp number?i was looking for 15psi as well(which both miine and You03cobra will handle) but that seems like a high number with just 15psi.

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

Verdad Gallardo

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

Pouria Savadkouei

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

Verdad Gallardo

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

Pouria Savadkouei

Top 10 Most Powerful Chevy Trucks Ever Made!

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

Verdad Gallardo

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

Verdad Gallardo

Awesome K5 Blazer Restomod Comes With C7 Corvette Power

Verdad Gallardo

10 Camaros You Should Never Buy

10 LS Engine Myths That Refuse to Die

Verdad Gallardo

Jun 8, 2005 | 03:20 PM

ddnspider

10 Second Club

iTrader: (26)

Joined: Aug 2004

Posts: 14,628

Likes: 1,778

From: FL

at what psi?my CR is gonna be about 9:1 which is where the Spped Inc SB is at i believe.not meaning to steal the thread but we're basically in the same situation

Jun 8, 2005 | 03:23 PM

#10

HellRaiser

TECH Fanatic

iTrader: (9)

Joined: Nov 2004

Posts: 1,376

Likes: 0

From: Bucks County, PA

Quote:

Originally Posted by ddnspider

Don't forget these are V8's. When people think of a boosted car's they think of the 4 & 6 bangers that need like 20+psi to make big power.

Jun 8, 2005 | 03:25 PM

#11

Pro Stock John

LS1Tech Co-Founder

iTrader: (34)

Joined: Nov 2001

Posts: 45,325

Likes: 1,767

From: Chicago, IL

21 psi, t400, blower, and my cam was not picked for peak hp. I made 735rwhp with 17psi and a different cam, but it was peakier.

Jun 8, 2005 | 03:27 PM

#12

ddnspider

10 Second Club

iTrader: (26)

Joined: Aug 2004

Posts: 14,628

Likes: 1,778

From: FL

very true.im just curious what sort of numbers to expect with say 12-15 psi.i KNOW im going to run out of turbo with the T67 that came with my Phamspeed kit.i was told by the sponsor building my motor that im good for anything under 20psi or 1000rwhp,whichever comes first

which is always good to know