Confused on checking pushrod length - Hot Rod Forum : Hotrodders Bulletin Board -- Hot Rod Forum

Register FAQ Search Today's Posts Unanswered Posts Auto Escrow Insurance Auto Loans
Hot Rod Forum : Hotrodders Bulletin Board > Tech Help> Hotrodding Basics
User Name
lost password?   |   register now

LinkBack Thread Tools
  #1 (permalink)  
Old 05-04-2012, 08:13 AM
Silver Surfer's Avatar
More machine than man

Last journal entry: bwaahhaahahaaahhaa
Last photo:
Join Date: Jul 2005
Location: Kansas City, MO
Age: 39
Posts: 842
Wiki Edits: 0

Thanks: 109
Thanked 68 Times in 58 Posts
Confused on checking pushrod length

I am building up a SBC350. The block has been decked, heads have been milled, using non standard head gasket, and I will be using full roller rockers. I see that comp cams offer two push rod length checking tools that might help me, but I might have to buy both. The standard pushrod length on this engine is 7.8", correct" Why in the heck would they make their tools adjust to 7.8"? Shouldn't they make a tool that adjusts from 7.3"-8.3" or is this just a scam to get me to buy two tools? In the end I am thinking with the material that has been cut, I should opt for the smaller tool first, then if that isn't correct get the next size up. Thoughts?

Part Name
7702-1 Hi-Tech Checking Pushrod 6.800"-7.800" $19.00
7703-1 Hi-Tech Checking Pushrod 7.800"-8.800" $19.00

Reply With Quote Quick reply to this message
Sponsored Links
  #2 (permalink)  
Old 05-04-2012, 09:33 AM
Registered User
Join Date: Jan 2009
Location: utah
Posts: 104
Wiki Edits: 0

Thanks: 0
Thanked 2 Times in 2 Posts
Cut a pushrod in half, remove a section, weld in long nut on one side, jam nut and bolt on the other and make your own adjustable pushrod tool. Make sure when you do this you can adjust it between the desired measurements. When you get the length right measure it yourself or take it to a machine shop and have them measure it for you. Get the one closest to your measurement that is available. Easy $5.00 problem to handle.

However having a motor with minor decking on the block and or heads with a thin head gasket is probably not enough to require different length pushrods. Usually, longer stem valves with aftermarket heads cause a reason valvetrain correction. If you are using hydraulic flat tappet cam, use a solid lifter in place of the hydraulic lifter to check pushrod length, same with a roller. Keep an eye on the backside of the rocker arm as well. You can get a good pattern with the rocker arm sitting on the retainer on the backside, which causes a need for a longer pushrod or rocker arm clearancing.
Reply With Quote Quick reply to this message

Recent Hotrodding Basics posts with photos

Quick Reply

Register Now

In order to be able to post messages on the Hot Rod Forum : Hotrodders Bulletin Board forums, you must first register.
Please enter your desired user name (usually not your first and last 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:
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.

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools

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
Trackbacks are On
Pingbacks are On
Refbacks are On

Similar Threads
Thread Thread Starter Forum Replies Last Post
Checking pushrod length with checking springs? v8hed Engine 1 01-22-2011 06:20 PM
checking pushrod length w/ hyd. lifters awoodman Engine 9 11-05-2007 05:42 AM
Pushrod length 83c10 Engine 3 04-03-2005 02:51 PM
confused on pushrod length. Jmark Engine 11 11-16-2003 03:35 PM
Pushrod length Bandeezee Engine 2 01-13-2003 06:46 PM

All times are GMT -6. The time now is 06:35 PM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0 PL2
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright 1999 - 2012. All Rights Reserved.