csb 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 02-12-2007, 06:59 PM
Registered User
 
Join Date: Feb 2007
Location: virginia
Posts: 6
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
csb heads

i have been given a set of chevy vortec heads 1.94 1.50 valves and i have heard good things and ive heard bad. Are they capable of 400-450 hp and what do i have to do to adapt them to an old motor. I dont wanna use center bolt valve covers neither, had problems with them leaking before on other projects. Need help deciding. Any opinions?!?!?!?

    Advertisement
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2 (permalink)  
Old 02-12-2007, 07:06 PM
Gokussj5okazu's Avatar
Registered User
 

Last journal entry: 336 Stroker: Teardown
Last photo:
Join Date: Nov 2006
Location: Fredericktown, MO
Age: 24
Posts: 156
Wiki Edits: 0

Thanks: 1
Thanked 0 Times in 0 Posts
They're relatively good heads, not major performance but they have plenty of potential, and CAN make arodun 400hp given the right situation. Should fit any sbc, but you'll have to go with a vortec intake of course.
Reply With Quote Quick reply to this message
  #3 (permalink)  
Old 02-12-2007, 07:10 PM
Registered User
 
Join Date: Feb 2007
Location: virginia
Posts: 6
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
sbc vortec heads

Just out of curiosity should i port them out to a 2.02 head and have them maachined or save a lil more money and buy a set of ready to go out the box heads. Right now im looking at buying a set of world sportsmans but im not used to building high rev hp motors im used to strong low end torque for mud boggin. Thanks for the advise.
Reply With Quote Quick reply to this message
  #4 (permalink)  
Old 02-12-2007, 07:34 PM
Registered User
 
Join Date: Dec 2006
Location: ohio
Posts: 45
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
you can buy centerbolt valve cover adapters from jegs
Reply With Quote Quick reply to this message
  #5 (permalink)  
Old 02-13-2007, 03:05 PM
Registered User
 
Join Date: Feb 2007
Location: virginia
Posts: 6
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
still lost

My plan was to build a decent but budget motor. I already knew my biggest expense was heads but i didnt think it was gonna be my biggest headache. I plan on running stock crank, gm polished "pink" rods, victor jr. intake, holley750 double pump, and I have had 200 different opinions on head/cam combos to run. I want the lumpiest idle i can get without sacrificing bottom end and since most of the bottom end of the motor is stock i dont want my power band goin much further than 5800. This is just a street weekend warrior so i dont know if im asking too much out of it for the buget im on, i just want a good head/cam combo to do what i want. Any advice?

p.s.
Trying to stay under 1000 for heads and cam.
Reply With Quote Quick reply to this message
  #6 (permalink)  
Old 02-13-2007, 03:28 PM
firestone's Avatar
http://teamrfc.gospelcom.net
 
Last photo:
Join Date: Nov 2003
Location: Fenton MI
Age: 32
Posts: 1,743
Wiki Edits: 0

Thanks: 0
Thanked 1 Time in 1 Post
I would highly recommend the Vortec heads. I have used them before and I was very happy with how they performed. I would not recommend getting larger valves installed though. The main reason for this is that if they are overheated too bad, they have a greater tendancy to crack than the thicker aftermarket heads. They are so cheap, and perform so well out of the box, I would not spend the extra money. You will need to get the spring seats machined out for larger springs if you have not done it. This is cheap to do. The "Z28" springs work well with those and can support .525 lift. These heads with the comp xe274h (230 236 @.050 .490 lift, .520 lift with 1.6 rockers) cam and a performer RPM intake (which I would recommend over a victor jr in this setup) should be around 400hp.

Adam
Reply With Quote Quick reply to this message
  #7 (permalink)  
Old 02-13-2007, 05:16 PM
techinspector1's Avatar
Senior Curmudgeon
 
Last wiki edit: DynoSim combinations Last photo:
Join Date: Oct 2005
Location: Hemet, California, USA
Age: 72
Posts: 12,934
Wiki Edits: 326

Thanks: 759
Thanked 1,008 Times in 847 Posts
Downside is they are thin and don't take to overheating well. Also, there is no heat crossover, so will take a little time to run good on a cold morning. They are however, probably the best flowing heads that Chevy has ever made for the small block. They work best with a flat-top piston.
Reply With Quote Quick reply to this message
  #8 (permalink)  
Old 02-14-2007, 03:46 PM
Registered User
 
Join Date: Feb 2007
Location: virginia
Posts: 6
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
sbc heads

One more question, ive heard you have to do some cross over stuff to the heads to make the location of alternators and whatnot stay the same if you use the vortec heads on an older motor is this true and is there a vortec built set up for the older style small blocks. Thank alot for all the help.
Reply With Quote Quick reply to this message
  #9 (permalink)  
Old 02-15-2007, 10:49 AM
techinspector1's Avatar
Senior Curmudgeon
 
Last wiki edit: DynoSim combinations Last photo:
Join Date: Oct 2005
Location: Hemet, California, USA
Age: 72
Posts: 12,934
Wiki Edits: 326

Thanks: 759
Thanked 1,008 Times in 847 Posts
Very early Chevy heads from the 50's and 60's were not drilled on the ends to accept accessories. Everything was hung off the exhaust manifolds and intake manifold. This may be what you have heard. So long as you're replacing heads which are drilled, the Vortecs should be a direct bolt-on.

I did find a fix for using a higher lift cam with the stock-valve-seal Vortec heads. Gilbert Chevrolet uses a Crane Cams kit number 10309-1 which uses a different spring and retainer that requires no machine work and facilitates a valve lift of 0.550".
Reply With Quote Quick reply to this message
  #10 (permalink)  
Old 02-15-2007, 11:00 AM
xntrik's Avatar
Save a horse, Ride a Cowboy.
 
Last photo:
Join Date: Jul 2005
Location: Arkansas
Posts: 5,131
Wiki Edits: 0

Thanks: 0
Thanked 1 Time in 1 Post
I suggest you read over this article. It appears on several sites including CompCams.
It uses the EngineQuest 180 Vortec heads (aftermarket).
You can get an induction and cam recommendation here, and you can see the rpm range of the combination.

http://www.popularhotrodding.com/eng...ock/index.html

Obviously if you use factory Vortecs and a similar flat tappet cam, you will lose some power.

There is also a regular Vortec buildup on CompCams and on the PHR and CarCraft sites. I can't get my finger on them right now.

Last edited by xntrik; 02-15-2007 at 11:08 AM.
Reply With Quote Quick reply to this message
  #11 (permalink)  
Old 02-15-2007, 11:12 AM
xntrik's Avatar
Save a horse, Ride a Cowboy.
 
Last photo:
Join Date: Jul 2005
Location: Arkansas
Posts: 5,131
Wiki Edits: 0

Thanks: 0
Thanked 1 Time in 1 Post
Quote:
Originally Posted by firestone
I would highly recommend the Vortec heads. I have used them before and I was very happy with how they performed. I would not recommend getting larger valves installed though. The main reason for this is that if they are overheated too bad, they have a greater tendancy to crack than the thicker aftermarket heads. They are so cheap, and perform so well out of the box, I would not spend the extra money. You will need to get the spring seats machined out for larger springs if you have not done it. This is cheap to do. The "Z28" springs work well with those and can support .525 lift. These heads with the comp xe274h (230 236 @.050 .490 lift, .520 lift with 1.6 rockers) cam and a performer RPM intake (which I would recommend over a victor jr in this setup) should be around 400hp.

Adam
CompCams has a direct replacement beehive spring # 26915 that allows .550 lift with totally stock Vortec heads and will not overpower the pressed in rocker studs. Without special retainers, etc. stock heads support about .475 lift.

The EQ heads are thicker and won't crack.
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
AFR or Vortec heads? Cam? rodent Engine 18 06-08-2010 03:50 PM
Which Heads to use? Mike_82 Engine 9 03-05-2009 10:32 PM
sbc heads shieldbreaker Engine 5 08-27-2005 08:12 PM
Heads and Intake combo black66 Engine 4 07-23-2005 11:33 PM
looking for some head(s) now i'm gonna explode! bullheimer General Rodding Tech 25 04-12-2004 01:16 PM


All times are GMT -6. The time now is 02:04 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.