cam selection for a vortec 350 - Page 2 - 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> Hotrodding Basics
User Name
Password
lost password?   |   register now

Reply
 
LinkBack Thread Tools
  #16 (permalink)  
Old 07-01-2012, 04:12 PM
F-BIRD'88's Avatar
Yada Yada Yada
 
Last photo:
Join Date: Oct 2005
Location: Ontario, Canada
Posts: 9,550
Wiki Edits: 0

Thanks: 3
Thanked 334 Times in 331 Posts
Rough hot rod idle using stock L-31 (906-062)vortec heads.

Use Isky cam # 201268 201278 201288

224- 234 and 244 @.050" resectively. 106LSA

naturely the bigger the duration the more radical the idle and the higher rpm the power band.

These .450" lift Isky cams go in with just a simple valve spring swap.
use any Z/28 type hi perf stock diameter spring minus the inner spring damper.

These cams have rough idle and reduced vacuum at idle.
recurve the distributor for 24-26deg at idle and 34-36deg at max advance.
best with a 3000 to 3500++++ stall converter and gears.
Will not work with a stock stall converter. not good with stock gears.
use a 4.5" power valve (holley) or 3" power step sping (edelbrock AFB)

uses stock GM vortec motor rockers
Use isky hyd or GM SBC hyd lifters

If you degree the cam it should go in on a 102 intake C/L

Very very responsive and powerfull when set up right
Converter, gears , ignition curve

video: to my friends :: t-bird88vid.mp4 video by DENCOUCH - Photobucket

    Advertisement
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #17 (permalink)  
Old 07-06-2012, 07:36 PM
BigEd36's Avatar
Registered User
 
Last photo:
Join Date: Nov 2009
Location: Auburn, IN
Age: 65
Posts: 378
Wiki Edits: 0

Thanks: 16
Thanked 38 Times in 34 Posts
Howards CL112431-06 cam/lifter kit would be an equivalent cam to the Isky 201268 recommended by F-Bird'88 with .450" lift, 223* @ .050" vs 224* @ .050" for the Isky cam. The Howards cam/lifter kit is $139.95 at Summit Racing, compared to $169.95 for the Isky cam with no lifters. Howards and Isky are the only 2 companies that grind all their cams in-house. There are Howards grinds that are equivalent to the other 2 Isky cams F-Bird'88 recommended, they don't come in cam/lifter kits, but they would save some money over the equivalent Isky grinds.

Ed

Last edited by BigEd36; 07-06-2012 at 07:43 PM.
Reply With Quote Quick reply to this message
  #18 (permalink)  
Old 07-09-2012, 11:15 AM
my87Z's Avatar
Veteran/Firefighter-EMT-I CRT
 
Join Date: Mar 2009
Location: maryland
Age: 30
Posts: 1,685
Wiki Edits: 0

Thanks: 6
Thanked 11 Times in 11 Posts
X2,

and I'm willing to bet if you called Howards Cams that they would be willing to work a deal on selling you those other two cam profiles as a cam/lifter set for roughly the same price as their other kits.

Howards valvetrain products is all I ever use anymore, I've found them to be of great quality, price, and they also have great customer service. For as much as I recomend HRC products, I think I should get a discount on my next HRC purchase.
Reply With Quote Quick reply to this message
  #19 (permalink)  
Old 07-09-2012, 04:29 PM
1971BB427's Avatar
Registered User
 

Last journal entry: Latest changes
Last photo:
Join Date: Dec 2010
Location: Portland
Posts: 1,473
Wiki Edits: 0

Thanks: 12
Thanked 221 Times in 192 Posts
I am a big fan of Isky Cams, but if you want to save some money you can go with one of the Crane cams sold under the Summit brand name. A cam/lifter kit will run around $120-$140 complete.
If you want lots of rumble and all sound you need a small (close) LSA number like 106-108 max. Long duration will help too, but I wouldn't go too long and have all low end power suffer.
SUM K00172 will give you a rough idle and not sufer ffrom low end power loss, it will also work with a stock converter, if the car is an automatic. 274/274 .450 lift and 106 LSA. $139. for cam and lifters.

edit-Oops! That Howard's cam is pretty much identical to the Crane/Summit cam set.
Reply With Quote Quick reply to this message
  #20 (permalink)  
Old 07-10-2012, 05:40 AM
zildjian4life218's Avatar
Listen and Learn
 
Last wiki edit: DIY junkyard electrical fan controller
Last journal entry: SBC 305 Twin Turbo
Last photo:
Join Date: Dec 2008
Location: WNY/Rochester, New York
Age: 25
Posts: 1,588
Wiki Edits: 7

Thanks: 44
Thanked 8 Times in 8 Posts
Quote:
Originally Posted by my87Z View Post
you mention that this is a vortec 350 which automatically makes me think that this is a 96'-00' vortec 350 motor. if so these were factory roller lifter cam motors and the lifter bores are larger in diameter than the older flat tappet style motors. running a flat tappet lifter in these motors is not going to work, that lifter will slap all around and the cam nor lifters will last longer than the time it takes to break the cam in.
Really?? I and a couple people have ran flat tappets in these blocks and zero problems. Mine actually went in tighter than they should have and needed the lifter bores honed.
Reply With Quote Quick reply to this message

Tags
350, camshaft

Recent Hotrodding Basics posts with photos

Quick Reply
Message:
Options

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:
If you do not want to register, fill this field only and the name will be used as user name for your post.
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

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
350 Cam selection Madcam71 Engine 7 10-06-2009 02:33 AM
vortec cam selection, custom grind? slate84 Engine 13 02-04-2009 09:02 PM
350 Cam Selection? AR_Racing_627 Engine 14 01-23-2008 04:18 PM
Cam selection for Vortec Chevy 383 mytruckownsit Engine 7 06-14-2006 07:16 AM
350 cam selection help!? oregon chevelle Engine 3 03-13-2006 02:43 PM


All times are GMT -6. The time now is 10:02 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0 PL2
Copyright Hotrodders.com 1999 - 2012. All Rights Reserved.