305 valve train questions - Hot Rod Forum : Hotrodders Bulletin Board
Hotrodders.com -- Hot Rod Forum

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

LinkBack Thread Tools
  #1 (permalink)  
Old 06-16-2004, 02:47 AM
59vette's Avatar
Last photo:
Join Date: Oct 2003
Location: UK
Posts: 78
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Question 305 valve train questions

Hi Guys

I've aquired a 305 engine, which I'm giving a quick check-up before installation, I did a test run and it worked great.
(pls, no comments on the 305 no good, -dump it story. The engine is perfect my this purpose. thx)

Engine has a Crane cams H256 (113901), 206/218@0.050, 0.432"/0.459" camshaft installed.

Currently the cam is installed with what I believe to be the standard springs.

Heads are standard with press in studs.

I was thinking about installing a set of Comp springs that I have, just to make sure they match the cam.

What is the maximum spring pressure I can run on press in studs?

Would it be possible run with Comp Cams 981 springs, 105# seated, 296# open?

Btw I noticed that the standard chain is pretty worn, "+ slack, so it will get changed with a true roller I've got...

But would a such a cam with standard springs wear the gear so much?

To me there are to possible causes:

They installed cam with the old worn gear.... hmm, pretty stupid, but who knows....

Springs are already upgraded versions = no problems with press in studs....

Which head gasket came on these engines?
Mine has a thin ~0.02" steel/copper gasket...??

Thanks for your help


Reply With Quote Quick reply to this message
Sponsored Links
  #2 (permalink)  
Old 06-16-2004, 04:26 AM
BOBCRMAN@aol.com's Avatar
Last photo:
Join Date: May 2002
Location: Holly, michigan
Posts: 8,970
Wiki Edits: 0

Thanks: 85
Thanked 520 Times in 458 Posts
The new springs will be ideal for that cam and are compatible with press stud heads. SOME of the new timing sets on the market are quite loose when installed, and with a few miles look very sloppy. The roller chain will be a welcome addition. Stock 305's have the thick composition gaskets from the factory. Looks like someone used the thin gaskets trying to add a little compression ratio. Good luck!
Reply With Quote Quick reply to this message

Recent Engine 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

All times are GMT -6. The time now is 12:03 AM.

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 Hotrodders.com 1999 - 2012. All Rights Reserved.