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Pushrod length

Printed From: The Ford Torino Page
Category: Powertrain Specific Forum
Forum Name: FE Block Forum
Forum Description: 332, 352, 360, 361, 390, 406, 410, 427 and 428 engines
URL: https://forum.grantorinosport.org/forum_posts.asp?TID=18173
Printed Date: 28-March-2024 at 4:40AM
Software Version: Web Wiz Forums 12.06 - https://www.webwizforums.com


Topic: Pushrod length
Posted By: EBERSCHEID1031
Subject: Pushrod length
Date Posted: 14-July-2019 at 6:41PM
Hi all, new here. I have a question. Heres my build:
1968 390 +30
4.25 scat crank
Flat top mahle pistons
Hydraulic roller comp cam 234@50 .587 lift 112° seperation
Lunati hydraulic lifters link bar
Harland sharp rockers 
72cc edelbrock heads 
Performer rpm intake
I measured pushrod length tonight and got 8.33125
Leaving no threads underside of rocker allowing 2 threads of adjustment per harland sharp. Does this number seem right to anyone with a similar 445 stroker build???



Replies:
Posted By: gregaba
Date Posted: 31-July-2019 at 3:24AM
Your length seems a little short. It does depend on how much head and block work was done.
I would get a good adjustable push rod and install it and get a correct measurement.
As much as push rods cost now you don't want to buy more then one set.
I would check each push rod because there is sometimes different length's for each push rod depending on your block.
Greg


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Greg


Posted By: aquartlow
Date Posted: 31-July-2019 at 6:42AM
Also make sure the pushrod length is taken with the lifters internal plunger at about 1/2 it's travel, if the plunger has .060" travel you will want about .030" preload when the pushrods are installed. 

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