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

Pushrod Length

Thread Tools
 
Search this Thread
 
Old Jul 26, 2006 | 08:38 PM
  #1  
67Firebird455's Avatar
Thread Starter
12 Second Club
20 Year Member
Photogenic
Photoriffic
Liked
iTrader: (27)
 
Joined: Sep 2004
Posts: 2,552
Likes: 12
From: Visalia, California
Default Pushrod Length

347 with #317 uncut (lightly surface) heads and an MTI Stealth II cam... Would 7.4" pushrods work? What REALLY affects the length, I have heard of different base circle cams, I do know the stealth II is on an XE profile, but not sure how that would affect pushrod length. Maybe someone could chime in and clear this up for me. I have a set of hardened 7.4" pushrods, need to know if I need something else. Oh btw - I have Harland Sharp 1.7 non adjustable rockers.
Reply
Old Jul 26, 2006 | 11:35 PM
  #2  
67Firebird455's Avatar
Thread Starter
12 Second Club
20 Year Member
Photogenic
Photoriffic
Liked
iTrader: (27)
 
Joined: Sep 2004
Posts: 2,552
Likes: 12
From: Visalia, California
Default

Anyone?
Reply
Old Jul 27, 2006 | 02:34 AM
  #3  
chino_man279's Avatar
12 Second Club
iTrader: (7)
 
Joined: Mar 2003
Posts: 638
Likes: 0
From: Allen, MI
Default

The correct way would be to measure it up and buy the exact length. I am guessing with heads that just have a cleanup though that the 7.4's will be darn close. The base circle is slightly smaller, but your heads are shaved(how much??). Interested in seeing your dyno with the 918's, boost, and harland sharps. I would like to see if you get valve float....post up when you get it going.
Reply
Old Jul 27, 2006 | 02:38 AM
  #4  
98hardtopZ's Avatar
TECH Fanatic
iTrader: (7)
 
Joined: Jun 2004
Posts: 1,251
Likes: 0
From: brandon, ms
Default

its definately worth geting a pushrod length checker and figuring out exact length.
Reply
Old Jul 27, 2006 | 07:44 AM
  #5  
PREDATOR-Z's Avatar
TECH Senior Member
 
Joined: Mar 2004
Posts: 14,620
Likes: 17
From: BFE
Default

7.425 would be better.
Stealth II base circle is XE-R and .04x smaller than stock.

I used to run that cam BTW.
Reply
Old Jul 27, 2006 | 01:26 PM
  #6  
67Firebird455's Avatar
Thread Starter
12 Second Club
20 Year Member
Photogenic
Photoriffic
Liked
iTrader: (27)
 
Joined: Sep 2004
Posts: 2,552
Likes: 12
From: Visalia, California
Default

Originally Posted by chino_man279
The correct way would be to measure it up and buy the exact length. I am guessing with heads that just have a cleanup though that the 7.4's will be darn close. The base circle is slightly smaller, but your heads are shaved(how much??). Interested in seeing your dyno with the 918's, boost, and harland sharps. I would like to see if you get valve float....post up when you get it going.
Whoops, forgot to change my sig... I sold the 918's and got the patriot gold spring kit from TRT. Thanks for bringing that to my attention! The heads are not going to be shaved at all, I want around 8.7:1 or so with the 6.0l heads, 6.0L MLS gasket and a cleaned up deck with the -8.7cc pistons.
Reply
Old Jul 27, 2006 | 01:27 PM
  #7  
67Firebird455's Avatar
Thread Starter
12 Second Club
20 Year Member
Photogenic
Photoriffic
Liked
iTrader: (27)
 
Joined: Sep 2004
Posts: 2,552
Likes: 12
From: Visalia, California
Default

Originally Posted by PREDATOR-Z
7.425 would be better.
Stealth II base circle is XE-R and .04x smaller than stock.

I used to run that cam BTW.
Awesome, thanks for clearing that up, how'd you like that cam and why the switch?
Reply
Old Jul 27, 2006 | 02:38 PM
  #8  
chino_man279's Avatar
12 Second Club
iTrader: (7)
 
Joined: Mar 2003
Posts: 638
Likes: 0
From: Allen, MI
Default

Originally Posted by 67Firebird455
Whoops, forgot to change my sig... I sold the 918's and got the patriot gold spring kit from TRT. Thanks for bringing that to my attention! The heads are not going to be shaved at all, I want around 8.7:1 or so with the 6.0l heads, 6.0L MLS gasket and a cleaned up deck with the -8.7cc pistons.
I was going to say with boost, the cam, heavier valves and rockers them 918's would have had their work cut out for them. Dont think the patriots should have any problem though.
Reply
LS1 Tech Stories

The Best V8 Stories One Small Block at Time

story-0

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

 Verdad Gallardo
story-1

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

 Pouria Savadkouei
story-2

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

 Verdad Gallardo
story-3

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

 Pouria Savadkouei
story-4

Top 10 Most Powerful Chevy Trucks Ever Made!

 
story-5

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

 Verdad Gallardo
story-6

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

 Verdad Gallardo
story-7

Awesome K5 Blazer Restomod Comes With C7 Corvette Power

 Verdad Gallardo
story-8

10 Camaros You Should Never Buy

 
story-9

10 LS Engine Myths That Refuse to Die

 Verdad Gallardo




All times are GMT -5. The time now is 01:01 PM.

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