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

pushrod length with TSP 5.3L heads

Thread Tools
 
Search this Thread
 
Old Jul 6, 2007 | 12:59 PM
  #1  
cals400ex's Avatar
Thread Starter
TECH Fanatic
iTrader: (27)
 
Joined: Apr 2007
Posts: 1,277
Likes: 2
From: Collinsville, IL
Default pushrod length with TSP 5.3L heads

I will be using a TR 224-112 cam, TSP 2.5 5.3L heads, new stock LS1/LS6 lifters, stock rocker, etc. I will be using the stock GM head gaskets. TSP recommended 7.4's while Patrick said he would probably do the 7.425's. What do you guys think?

I am not sure if one is easier on the valvetrain or if one will keep it quieter?
Reply
Old Jul 6, 2007 | 01:00 PM
  #2  
cals400ex's Avatar
Thread Starter
TECH Fanatic
iTrader: (27)
 
Joined: Apr 2007
Posts: 1,277
Likes: 2
From: Collinsville, IL
Default

By the way, I didn't have TSP mill the heads more than they normally do. They told me they usually take off .004-.005 thousandths off to clean the surfaces.
Reply
Old Jul 6, 2007 | 02:12 PM
  #3  
voda1's Avatar
On The Tree
20 Year Member
iTrader: (4)
 
Joined: Sep 2005
Posts: 177
Likes: 1
From: Cedar Rapids, Iowa
Default

Concerning length, what head bolts are you using, early model or late model? Is the length selected because of the block year or year of head?
Reply
Old Jul 6, 2007 | 02:28 PM
  #4  
Z28/2002's Avatar
11 Second Club
iTrader: (27)
 
Joined: May 2005
Posts: 6,799
Likes: 5
From: Your girl's back door giving her the long stroke while you're at work
Default

I went with the 7.4s with my 5.3/MS3 combo. Your best bet might be to get a pushrod length checker just to be sure
Reply
Old Jul 6, 2007 | 02:32 PM
  #5  
cals400ex's Avatar
Thread Starter
TECH Fanatic
iTrader: (27)
 
Joined: Apr 2007
Posts: 1,277
Likes: 2
From: Collinsville, IL
Default

I am using new ARP head bolts, not studs. I am not sure what you are asking in terms of the block or the head? I honestly didn't know the headbolts varied. I am using them on a 2000 Z28 if that matters any.
Reply
Old Jul 6, 2007 | 03:19 PM
  #6  
voda1's Avatar
On The Tree
20 Year Member
iTrader: (4)
 
Joined: Sep 2005
Posts: 177
Likes: 1
From: Cedar Rapids, Iowa
Default

GM perf parts lists 2 head bolt kits for LS1:

1997-2003 long style #12498545
2004 & up short style #17800568

So if block is 00 and heads are 05, which to use?

P.S. I see where ARP also list 2 different numbers.
Reply
Old Jul 6, 2007 | 05:34 PM
  #7  
Grimes's Avatar
TECH Addict
iTrader: (3)
 
Joined: Mar 2003
Posts: 2,636
Likes: 2
From: Northern NJ
Default

wondering why you didn't have them milled? I would at least do .010 or .015 for more compression
Reply
Old Jul 7, 2007 | 12:17 AM
  #8  
SSDriver's Avatar
TECH Enthusiast
iTrader: (2)
 
Joined: Sep 2002
Posts: 568
Likes: 0
From: Burbank, CA
Default

Originally Posted by Grimes
wondering why you didn't have them milled? I would at least do .010 or .015 for more compression
Depending on the size of his cam he might not of had a choice to mill lol. If the block is a 2000 you have the long bolts. 2004 is when GM changed the blocks where they have all short bolts.

-William
Reply
LS1 Tech Stories

The Best V8 Stories One Small Block at Time

story-0

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

 Pouria Savadkouei
story-1

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

 Verdad Gallardo
story-2

7 Most Reliable High-Performance Engines GM Has Ever Built

 Verdad Gallardo
story-3

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

 Verdad Gallardo
story-4

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

 Pouria Savadkouei
story-5

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

 Verdad Gallardo
story-6

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

 Pouria Savadkouei
story-7

Top 10 Most Powerful Chevy Trucks Ever Made!

 
story-8

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

 Verdad Gallardo
story-9

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

 Verdad Gallardo
Old Jul 7, 2007 | 02:05 AM
  #9  
PREDATOR-Z's Avatar
TECH Senior Member
 
Joined: Mar 2004
Posts: 14,620
Likes: 17
From: BFE
Default

Both will work, the 7.425 will add .015 preload and make things a little qieter.
Reply
Old Jul 7, 2007 | 07:55 AM
  #10  
Z28/2002's Avatar
11 Second Club
iTrader: (27)
 
Joined: May 2005
Posts: 6,799
Likes: 5
From: Your girl's back door giving her the long stroke while you're at work
Default

Originally Posted by PREDATOR-Z
Both will work, the 7.425 will add .015 preload and make things a little qieter.
PREDATOR will these also work for the TSP 5.3/MS3 combo?
Reply
Old Jul 7, 2007 | 09:43 AM
  #11  
PREDATOR-Z's Avatar
TECH Senior Member
 
Joined: Mar 2004
Posts: 14,620
Likes: 17
From: BFE
Default

Yes, any cam only XE & XE-R lobes
XFI and LSK will like up to 7.450
Reply
Old Jul 7, 2007 | 03:54 PM
  #12  
Z28/2002's Avatar
11 Second Club
iTrader: (27)
 
Joined: May 2005
Posts: 6,799
Likes: 5
From: Your girl's back door giving her the long stroke while you're at work
Default

Alright thanks




Sorry for the thread hijack
Reply
Old Jul 7, 2007 | 06:48 PM
  #13  
Grimes's Avatar
TECH Addict
iTrader: (3)
 
Joined: Mar 2003
Posts: 2,636
Likes: 2
From: Northern NJ
Default

Originally Posted by SSDriver
Depending on the size of his cam he might not of had a choice to mill lol. If the block is a 2000 you have the long bolts. 2004 is when GM changed the blocks where they have all short bolts.

-William
I thought he was using the 224/224? If he is, he definitely has room to mill, and I think he would be happier with the results as well!
Reply
Old Jul 8, 2007 | 02:17 PM
  #14  
cals400ex's Avatar
Thread Starter
TECH Fanatic
iTrader: (27)
 
Joined: Apr 2007
Posts: 1,277
Likes: 2
From: Collinsville, IL
Default

I have a TR224 cam on the way. I am using the TSP 5.3 L heads as well. They recommended that I did not mill them. I probably could have had them do it but I just went with what they recommended.
Reply
Old Jul 9, 2007 | 12:10 AM
  #15  
cals400ex's Avatar
Thread Starter
TECH Fanatic
iTrader: (27)
 
Joined: Apr 2007
Posts: 1,277
Likes: 2
From: Collinsville, IL
Default

maybe i didn't make it clear in the first post. i am sure i would have room to mill. i just went with what TSP said. so you are thinking 7.425 with the 5.3L heads and a TR224 cam using stock GM gaskets?
Reply
Old Jul 9, 2007 | 02:08 AM
  #16  
PREDATOR-Z's Avatar
TECH Senior Member
 
Joined: Mar 2004
Posts: 14,620
Likes: 17
From: BFE
Default

Originally Posted by cals400ex
maybe i didn't make it clear in the first post. i am sure i would have room to mill. i just went with what TSP said. so you are thinking 7.425 with the 5.3L heads and a TR224 cam using stock GM gaskets?
Not thinking, I'm sure.
7.400 will work but a bit noisier (less preload)
Reply




All times are GMT -5. The time now is 07:09 PM.

story-0
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-1
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-2
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-3
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-4
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-5
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-6
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-7
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-8
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-9
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