pushrod queston - LS1GTO.com Forums


Go Back   LS1GTO.com Forums > GTO Tech > LS1/LS2 Engine Tech

Thread Tools Rate Thread
Old 12-25-2012, 05:11 AM   #1
Registered User

Join Date: Dec 2012
Location: preston,ct 06365
Posts: 12

pushrod queston

This might be a stupid queston but i noticed that comp cams recomends a 7400 pushrod
Then with trick flow recomends a 7500 push rod are those numbers bases on cam profile or sprung height ,i know a push rod lenght checker is the correct way to find the correct length thanks for input and have a good holiday
  Reply With Quote Quick reply to this message
Sponsored Links
Old 12-25-2012, 02:47 PM   #2
cave dweller
batboy's Avatar
2004 GTO Owner

Join Date: Feb 2005
Location: Kansas
Posts: 7,279

If you are using Trick Flow heads, they have a thicker deck, so generally a longer pushrod is needed. Like you said, you should measure it to be sure.
2004 torrid red with red interior A4 GTO (1 of 499)

TR-230/236 cam/TEA ported Trick Flow 215 heads/4" CAI/100mm MAF/ported FAST 90/Kooks/Magnaflow
Performabuilt trans/3200 stall/Truetrac/Gforce1320 half shafts, stubs, CF driveshaft/SSR wheels/SNL tune
  Reply With Quote Quick reply to this message
Old 12-25-2012, 03:03 PM   #3
The stick guy -
LS1GTO.com Sponsor
EDC's Avatar
2004 GTO Owner

Join Date: Jan 2004
Location: ... in the shop... WORKING 24/7!
Posts: 4,236

Actually, the longer length push rod requirement for TFS heads is due to their "rolled" valve angle of 13.5 degrees.

The valves are tilted away from the intake face a little more than the stock 15 degree angle from the factory so a slightly longer push rod length is required.

Same holds true for the MAST motorsports heads which are "rolled" to 11 degrees from deck surface. Their push rod lengths vary from 8.050" to 8.200" depending on the camshaft and rocker arms used..

There is no "set" length for a particular engine but if you are careful checking the rocker geometry and lifter preload, you can get something in the ballpark from a reputable valvetrain designer.


Your number one source for custom designed camshafts, valvetrain and cylinder head combinations

"Quality is not expensive - It's PRICELESS"

  Reply With Quote Quick reply to this message
Old 12-27-2012, 08:57 AM   #4
NC Rogue Squadron
seawolf06's Avatar
2004 GTO Owner

Join Date: Dec 2009
Location: Raleigh, NC
Posts: 2,421
Premium Member

Get someone to build your motor for you.
1968 Chevelle 396
1995 Camaro Z28
2005 YJ GTO
2004 YJ GTO "Stormtrooper"
  Reply With Quote Quick reply to this message
Sponsored Links

Quick Reply

Register Now

In order to be able to post messages on the LS1GTO.com Forums forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:
Where you live (must be accurate to IP location, if wrong you may be permanently banned)
Please select your insurance company (Optional)


Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.

Thread Tools
Rate This Thread
Rate This Thread:

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

All times are GMT -8. The time now is 05:38 PM.

Powered by vBulletin® Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.