What do you think of my 402 build?

Reply Subscribe

Thread Tools

Search this Thread

Mar 29, 2007 | 05:56 PM

J's99Zrated

Thread Starter

On The Tree

iTrader: (1)

Joined: Jul 2005

Posts: 138

Likes: 0

From: Bloomsburg, PA

What do you think of my 402 build?

Here are the specs:

402 short block
Eagle 4.00" stroke crankshaft
Scat H-beam 6.125" rods
Diamond -10cc pistons
Arp everything

TSP Texas Giant Camshaft
248/254, .611"/.613" 111LSA

TEA Stage 2 5.3 Heads
322@.600 intake
260@.600 exhast

Fast 90/ PTM 90
LT's + ORY + Cutout

SCR 11.53
DCR 8.65
Shooting for 500rwhp / 500rwtq

Questions, comments, suggestions? Post them up I want to hear what you guys think.

Mar 29, 2007 | 06:44 PM

gnx7

TECH Junkie

iTrader: (28)

Joined: Nov 2002

Posts: 3,655

Likes: 277

From: San Francisco, CA

You have the cubes/compression/heads/cam.

With a good exhaust/tune you should meat that goal.

How high do you plan on spinning it?

Mar 29, 2007 | 07:18 PM

J's99Zrated

Thread Starter

On The Tree

iTrader: (1)

Joined: Jul 2005

Posts: 138

Likes: 0

From: Bloomsburg, PA

No higher than 6700rpm, my hope is peak power will be around 6500rpm.

Mar 29, 2007 | 08:11 PM

wavrdr

Launching!

iTrader: (1)

Joined: Sep 2004

Posts: 287

Likes: 0

This is very similiar to my buildup:

LS2 402
Callies crank/rods
Mahle -12 pistons
ETP 215's @ 59cc w/.040 Cometics
240/244 .609/.612 111+3
SCR 11.56/DCR 8.67(PianoProdigy's calculator)
Ported Fast 90/ported LS2
full bolt-ons EWP, LG LT's, Vararam, etc.

This package will be going in my 02' Z06 and I am hoping for 500whp/500wtq!

Good Luck!

Mar 29, 2007 | 08:26 PM

Hard Core Z28

TECH Regular

Joined: Feb 2004

Posts: 450

Likes: 0

From: Over Here and Over There

Looks good. But dont be disappointed if you dont reach 500 rwhp. Dynos are tuning tools. The race track is what matters.

Mar 29, 2007 | 10:37 PM

bigdsz

TECH Fanatic

iTrader: (1)

Joined: Jun 2003

Posts: 1,876

Likes: 1

From: Mount Dora, Fla

Erik is building a 408 for me, very similar to you guys Absolute Speed 5.3 heads, Callies Dragonslayer crank, Compstar rods, Wiseco -10cc, Comp 244.248 .612/.615 112+2. I don't see any way I'm going to hit 500 rwhp since I've got a Ford 9" and that costs about 25 hp. Not having a 90/90 intake costs about 15/20 hp. Erik just built a 408 for a friend of mine, he had the 90/90, 1 7/8 Kooks, and AFR's with a 12 bolt. On a conservative Dynojet he did 485 rwhp.

Mar 29, 2007 | 11:58 PM

Chicago Crew UnderBoss

TECH Fanatic

iTrader: (1)

Joined: Oct 2002

Posts: 1,851

Likes: 0

From: Elmhurst, IL (Chicago Suburb)

Looks like a sweet build up. Can the last poster give the webaddress or # for ERICs new shop!

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

Mar 30, 2007 | 12:11 AM

J's99Zrated

Thread Starter

On The Tree

iTrader: (1)

Joined: Jul 2005

Posts: 138

Likes: 0

From: Bloomsburg, PA

I have seen a couple of guys mention that they are or will be using the 5.3 heads for their 408/402. I am going to see what kind of power I can get out of the 5.3 heads. If I am lower power wise than I feel it should be the heads will come off and get made up into stage 3. Right now I think I will hit the 500rwhp mark b/c the heads flow well (322@.600 on a 3.9 bore) and they should flow sightly better on a 4 inch bore (with my new motor). Also I still have the wimpy 10 bolt in place and that will save me a few hp over the 12 bolt that will come later this year.