which cam in a sbc with vortec heads - 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
Password
lost password?   |   register now

Reply
 
LinkBack Thread Tools
  #1 (permalink)  
Old 12-28-2009, 02:24 AM
Registered User
 
Last photo:
Join Date: Nov 2009
Location: texas
Posts: 72
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
which cam in a sbc with vortec heads

i have a 350 bored 60 over with vortec heads i was wondering wich would be a better cam. The motor is in a 10982 gmc swb truck. also i have a 3,000 stall converter. do the these cams have a good lope to them
Cam Style Hydraulic flat tappet
Basic Operating RPM Range 2,000-5,800
Intake Duration at 050 inch Lift 214
Exhaust Duration at 050 inch Lift 214
Duration at 050 inch Lift 214 int./214 exh.
Advertised Intake Duration 264
Advertised Exhaust Duration 264
Advertised Duration 264 int./264 exh.
Intake Valve Lift with Factory Rocker Arm Ratio 0.450 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio 0.450 in.
Valve Lift with Factory Rocker Arm Ratio 0.450 int./0.450 exh. lift
Lobe Separation (degrees) 108
Intake Valve Lash 0.000 in.
Exhaust Valve Lash 0.000 in.
Grind Number 264 Mega
Computer-Controlled Compatible No

or


ISKY - Grind No./Type 278-MEGA HYDRAULIC.450 lift rule class; banked 1/4-3/8 mile tracks.RPM-Range 2000-6400Valve Lift - INT .450 EXT .450Valve Lash Hot - INT .000 EXT .000ADV Duration - INT

    Advertisement
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2 (permalink)  
Old 12-28-2009, 02:45 AM
F-BIRD'88's Avatar
Yada Yada Yada
 
Last photo:
Join Date: Oct 2005
Location: Ontario, Canada
Posts: 9,542
Wiki Edits: 0

Thanks: 3
Thanked 331 Times in 328 Posts
The 278 mega cam is the lopey one. does not work with a stock converter.

The other one is better suited for a truck if you use the truck as a truck.
Reply With Quote Quick reply to this message
  #3 (permalink)  
Old 12-28-2009, 02:48 AM
Registered User
 
Last photo:
Join Date: Nov 2009
Location: texas
Posts: 72
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
ok thanks from what i have been reading that seems like it will be a good cam for the motor. I dont wanna get to radical of cam were i have to many problems but i want something that sounds and performs decent. do you think this will be my best bet along with iskys ani pump up lifters. i dont use the truck as a truck just want something that i can have fun in and get back and forth to work with. i have a 3,000 stall in trucjk now
Reply With Quote Quick reply to this message
  #4 (permalink)  
Old 12-28-2009, 03:12 AM
F-BIRD'88's Avatar
Yada Yada Yada
 
Last photo:
Join Date: Oct 2005
Location: Ontario, Canada
Posts: 9,542
Wiki Edits: 0

Thanks: 3
Thanked 331 Times in 328 Posts
Quote:
Originally Posted by rk0982
ok thanks from what i have been reading that seems like it will be a good cam for the motor. I dont wanna get to radical of cam were i have to many problems but i want something that sounds and performs decent. do you think this will be my best bet along with iskys ani pump up lifters. i dont use the truck as a truck just want something that i can have fun in and get back and forth to work with. i have a 3,000 stall in trucjk now
If you want to use the 278mega cam you need to recurve the distribuor.

26deg inital base idle timing, 36 total max mechanical at 3000-3200 (limit the distributor advance travel to 10-12deg

.....10-15deg vacuum advance for cruising.
The truck will want high ratio gears 4.10+ with the 278 mega.

search Dencouch 's posts for the hows and whys.

The smaller 264d cam will get better fuel mileage.
Reply With Quote Quick reply to this message
  #5 (permalink)  
Old 12-28-2009, 03:14 AM
Registered User
 
Last photo:
Join Date: Nov 2009
Location: texas
Posts: 72
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
ok thansk again do you know were i can hear sound clip of both cams. i havent heard one of theirs and am curoius on how they sound. I apperciate your help
Reply With Quote Quick reply to this message
  #6 (permalink)  
Old 12-28-2009, 05:12 AM
Registered User
 
Last photo:
Join Date: Nov 2009
Location: texas
Posts: 72
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
does the 278 have a very aggressive lope to it is there a big difference between that and the 264. i would rather have better performance i am curios how they both sound thanks
Reply With Quote Quick reply to this message
  #7 (permalink)  
Old 12-28-2009, 05:31 AM
123pugsy's Avatar
HOT ROD...... FROM A CHRYSLER?
 
Last wiki edit: Metal shaping
Last journal entry: FLOOR BEADS
Last photo:
Join Date: Apr 2006
Location: Markham,ON
Age: 52
Posts: 2,333
Wiki Edits: 29

Thanks: 393
Thanked 242 Times in 212 Posts
I may be wrong here, but I believe a lumpy sounding cam gives better high end and a smoother cam gives better low end torque.

What's your preference other than sound?
Reply With Quote Quick reply to this message
  #8 (permalink)  
Old 12-28-2009, 05:38 AM
Registered User
 
Last photo:
Join Date: Nov 2009
Location: texas
Posts: 72
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
I want performance the trucks a daily driver I want to sound good buy want it to be reliable to i want the biggest cam
I can without having to replace springs and worry about breaking thing s
Reply With Quote Quick reply to this message
  #9 (permalink)  
Old 12-28-2009, 06:32 AM
How fast is fast enough?
 
Last photo:
Join Date: Jun 2005
Location: St. Louis, MO
Age: 29
Posts: 8,681
Wiki Edits: 0

Thanks: 17
Thanked 281 Times in 261 Posts
Elgin makes a cam with 274/274 duration and .450/.450 lift on a 106 LSA and a 102 ICL. It works very well with a 3,000 stall and is very mild. Has killer mid range torque too, BUT milage is not the greatest. People have swapped it into otherwise stock engines with headers and have had good results. You need a good exhaust system with it though.
Reply With Quote Quick reply to this message
  #10 (permalink)  
Old 12-28-2009, 06:46 AM
Registered User
 
Last photo:
Join Date: Nov 2003
Location: oklahoma
Age: 32
Posts: 250
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
search youtube people film everything. If it doesn't have your specific cam there will be one that is pretty darn close.
Reply With Quote Quick reply to this message
  #11 (permalink)  
Old 12-28-2009, 07:18 AM
How fast is fast enough?
 
Last photo:
Join Date: Jun 2005
Location: St. Louis, MO
Age: 29
Posts: 8,681
Wiki Edits: 0

Thanks: 17
Thanked 281 Times in 261 Posts
http://www.youtube.com/watch?v=LLWKKG1REXQ

Its the elgin cam I was talking about, its the one that comes in a Comp box labeled 274h06, but its the same cam, all the cam manufactures sell a version of this cam. Elgin just has the best price.
Reply With Quote Quick reply to this message
  #12 (permalink)  
Old 12-28-2009, 11:14 AM
Registered User
 
Last photo:
Join Date: Nov 2009
Location: texas
Posts: 72
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
thanks it does sound pretty good will the 201278 sound about the same
Reply With Quote Quick reply to this message
  #13 (permalink)  
Old 12-28-2009, 12:09 PM
How fast is fast enough?
 
Last photo:
Join Date: Jun 2005
Location: St. Louis, MO
Age: 29
Posts: 8,681
Wiki Edits: 0

Thanks: 17
Thanked 281 Times in 261 Posts
that cam, the Isky 278Mega, will actaully have an even more radical idle and will nto work with a stock converter as F'bird already noted. It will give you mpore hp up top, but sacrifice some low end power. Not a bad cam if you build the rest of the truck to suit it. For an otherwise stock truck though the cam I showed you is as large as I would go.
Reply With Quote Quick reply to this message
  #14 (permalink)  
Old 12-28-2009, 02:06 PM
How fast is fast enough?
 
Last photo:
Join Date: Jun 2005
Location: St. Louis, MO
Age: 29
Posts: 8,681
Wiki Edits: 0

Thanks: 17
Thanked 281 Times in 261 Posts
http://www.competitionproducts.com/E...tinfo/E1785PM/

E1785P is part number for that cam i recomended. Works fine with "z28" springs.
Reply With Quote Quick reply to this message
  #15 (permalink)  
Old 12-28-2009, 03:50 PM
V8 Super Beetle's Avatar
VW makes it, Chevy shakes it..
 
Last photo:
Join Date: Jan 2008
Location: Houston, TX
Age: 33
Posts: 1,245
Wiki Edits: 0

Thanks: 5
Thanked 0 Times in 0 Posts
Here's a video link to the sound of the isky 278 cam. Well, from inside but you get the idea of how choppy it sounds.

http://s185.photobucket.com/albums/x...-bird88vid.flv
Reply With Quote Quick reply to this message

Recent Engine 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 sbc Shortblock and vortec heads 1970Chevy Engine 2 09-23-2007 04:21 AM
Motorheads...Need help with Vortec style heads, can they just be swapped? firstgear Engine 16 01-15-2007 12:02 AM
Vortec heads w/solid lift cam...anyone? rbomar Engine 6 08-25-2006 04:42 PM
cam selection for sbc w/ efi and e-tec 200 heads? c10redneck Engine 0 07-18-2005 12:48 PM
Holley fuel injection with Vortec heads onna SBC. Pappy Engine 3 06-06-2002 11:17 AM


All times are GMT -6. The time now is 11:45 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.