Generation III Internal Engine 1997-2006 LS1 | LS6
Sponsored by:
Sponsored by:

Will I have enough piston to valve clearence?

Thread Tools
 
Search this Thread
 
Old Jul 19, 2007 | 12:28 AM
  #1  
allthrotle's Avatar
Thread Starter
TECH Resident
20 Year Member
iTrader: (2)
 
Joined: Jul 2005
Posts: 919
Likes: 0
From: Sparks,NV
Default Will I have enough piston to valve clearence?

I have an ms3 cam, and I just bought some patriot heads part #2029. I forgot to check and see but, the combustion chambers are 59 cc's I am not sure if they have been decked or not and I was wondering if I was going to have piston to valve clearence problems?
Reply
Old Jul 19, 2007 | 02:40 AM
  #2  
PREDATOR-Z's Avatar
TECH Senior Member
 
Joined: Mar 2004
Posts: 14,620
Likes: 17
From: BFE
Default

It depends if:
heads were milled
Size of valves used
Gasket used
and partialy what LSA/ICL of the MS3
Reply
Old Jul 19, 2007 | 07:17 AM
  #3  
brad8266's Avatar
TECH Senior Member
iTrader: (23)
 
Joined: Aug 2005
Posts: 8,797
Likes: 0
From: Watertown, NY
Default

^^:what he said.

BTW, those heads probably have not been milled, they have welded chambers in order to acheive the chamber size.
Reply
Old Jul 19, 2007 | 10:01 AM
  #4  
allthrotle's Avatar
Thread Starter
TECH Resident
20 Year Member
iTrader: (2)
 
Joined: Jul 2005
Posts: 919
Likes: 0
From: Sparks,NV
Default

Im using stock gm gaskets, compressed thickness is .052 I think, my ms3 is on a 112 lsa. I think Ill be fine I was just double checking, I dont want to have to spend more money than I have to.
Reply
Old Jul 19, 2007 | 10:26 AM
  #5  
Jason 98 TA's Avatar
LS1Tech Premium Sponsor
iTrader: (4)
 
Joined: Nov 2001
Posts: 4,229
Likes: 4
From: Texas!
Default

The MS3 camshaft will not clear with a larger valve than the stock 2" valve. As long as you get a 2" valve & a 1.55 exhaust valve you should be fine.
__________________
Jason
Co-Owner, Texas Speed & Performance, Ltd.
2005 Twin Turbo C6
404cid Stroker, 67mm Twins
994rwhp/902lb ft @ 22 psi (mustang dyno) www.Texas-Speed.com
Reply
Old Jul 19, 2007 | 12:45 PM
  #6  
allthrotle's Avatar
Thread Starter
TECH Resident
20 Year Member
iTrader: (2)
 
Joined: Jul 2005
Posts: 919
Likes: 0
From: Sparks,NV
Default

Originally Posted by Jason 98 TA
The MS3 camshaft will not clear with a larger valve than the stock 2" valve. As long as you get a 2" valve & a 1.55 exhaust valve you should be fine.
The valve sizes on the heads are 2.02 and 1.57 are these not going to fit with my ms3?
Reply
Old Jul 19, 2007 | 12:57 PM
  #7  
PREDATOR-Z's Avatar
TECH Senior Member
 
Joined: Mar 2004
Posts: 14,620
Likes: 17
From: BFE
Default

Originally Posted by allthrotle
The valve sizes on the heads are 2.02 and 1.57 are these not going to fit with my ms3?
Did Jason studder or are you shocked??

NO, you'll need to flycut a little.
Reply
Old Jul 19, 2007 | 01:13 PM
  #8  
allthrotle's Avatar
Thread Starter
TECH Resident
20 Year Member
iTrader: (2)
 
Joined: Jul 2005
Posts: 919
Likes: 0
From: Sparks,NV
Default

Originally Posted by PREDATOR-Z
Did Jason studder or are you shocked??

NO, you'll need to flycut a little.
Ya just a little shocked. I really didnt want to have to flycut. I guess I should have done my homework.
Reply
LS1 Tech Stories

The Best V8 Stories One Small Block at Time

story-0

6 Gifts Neither Your Dad Nor Grad Will Shove Into the 'Trinket Drawer'

 Brett Foote
story-1

Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?

 Pouria Savadkouei
story-2

Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine

 Verdad Gallardo
story-3

7 Most Reliable High-Performance Engines GM Has Ever Built

 Verdad Gallardo
story-4

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

 Verdad Gallardo
story-5

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

 Pouria Savadkouei
story-6

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

 Verdad Gallardo
story-7

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

 Pouria Savadkouei
story-8

Top 10 Most Powerful Chevy Trucks Ever Made!

 
story-9

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

 Verdad Gallardo




All times are GMT -5. The time now is 10:05 AM.

story-0
6 Gifts Neither Your Dad Nor Grad Will Shove Into the 'Trinket Drawer'

Don't get dad new socks or a grill brush this year.

By Brett Foote | 2026-06-04 18:13:20


VIEW MORE
story-1
Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?

Slideshow: We take a close look at the ONE and Artidiag 800BT2 diagnostic tools from Topdon and the reasons to buy one over the other.

By Pouria Savadkouei | 2026-05-28 11:05:11


VIEW MORE
story-2
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine

Slideshow: The controversial Ferrari F6 swaps its original flat-12 for a Corvette Z06-derived LT4 V8 and sends power to four rear wheels through a custom-built drivetrain.

By Verdad Gallardo | 2026-05-26 18:23:54


VIEW MORE
story-3
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-4
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-5
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-6
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-7
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-8
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-9
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