041 chevy heads....any good? - 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 08-10-2009, 09:01 PM
if it can go wrong it will
 
Join Date: Aug 2009
Location: Virginia
Age: 28
Posts: 49
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
041 chevy heads....any good?

Im building a 355 block works already done its an old 010 block ive had for a while and already had a set of 041 heads and cant find much info on them.Are they worth punching out and machining or not worth the time and money. Not looking for but about 450hp out the motor will these heads do it?

    Advertisement
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2 (permalink)  
Old 08-10-2009, 09:03 PM
Blazin72's Avatar
You got a leaky spark tube...
 
Last wiki edit: Rearend removal
Last journal entry: General Lee
Last photo:
Join Date: Jul 2005
Location: Union, WA
Age: 32
Posts: 2,868
Wiki Edits: 19

Thanks: 0
Thanked 2 Times in 2 Posts
If you want 450hp plan on stroking it and buying a set of Iron Eagle 200cc heads or something similar to that. It will make reaching your goal a lot easier.
Reply With Quote Quick reply to this message
  #3 (permalink)  
Old 08-10-2009, 09:36 PM
cool rockin daddy's Avatar
1.21 giga-watts???!!!!
 
Join Date: Aug 2003
Location: wherever cool cars are
Posts: 1,535
Wiki Edits: 0

Thanks: 0
Thanked 3 Times in 3 Posts
They are probably one of the best "fuelie" type heads out there. I have them on my Camaro and I can't wait until I can afford to upgrade to Bowtie Vortecs or Darts. 450 Horses with these heads? If you put a blower on it!
Reply With Quote Quick reply to this message
  #4 (permalink)  
Old 08-10-2009, 10:57 PM
MI2600's Avatar
Member# 3287
 

Last journal entry: Vortec Heads
Last photo:
Join Date: Jul 2002
Location: N. Muskegon, MI
Posts: 2,632
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
And nitrous.
Reply With Quote Quick reply to this message
  #5 (permalink)  
Old 08-11-2009, 03:33 AM
cobalt327's Avatar
WFO
 
Last wiki edit: Intake manifold
Last journal entry: 1980 Malibu Wagon
Last photo:
Join Date: Mar 2009
Location: Atlanta
Age: 59
Posts: 5,037
Wiki Edits: 1616

Thanks: 128
Thanked 597 Times in 546 Posts
Quote:
Originally Posted by Short_box
Im building a 355 block works already done its an old 010 block ive had for a while and already had a set of 041 heads and cant find much info on them.Are they worth punching out and machining or not worth the time and money. Not looking for but about 450hp out the motor will these heads do it?
While these heads will certainly be capable of making 450 HP w/some work, they are old-tech, small chamber heads that have nothing really going for them.

IMO, for OEM heads, you would be better off using Vortec heads with a couple cheap mods to let them handle higher lift- but the Vortec heads require a dedicated intake manifold.

Aftermarket heads will obviously get you there, too.
Reply With Quote Quick reply to this message
  #6 (permalink)  
Old 08-11-2009, 05:00 AM
Member
 
Last photo:
Join Date: Feb 2005
Location: chillicothe oh
Age: 47
Posts: 1,445
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
As said nothing going for them EXEPT 1.you already own them.2. They are capable of easily making your stated goal with a little bowl cleanup.3. If advertised on ebay under imca they would probably bring enough to buy vortecs or a real good start on some darts.These heads are gold in stock car classes that don't allow vortecs or aftermarket heads, highly sought after.
Reply With Quote Quick reply to this message
  #7 (permalink)  
Old 08-12-2009, 10:29 PM
if it can go wrong it will
 
Join Date: Aug 2009
Location: Virginia
Age: 28
Posts: 49
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Would anyone be interested in a trade.....I dont know much about machine work but these have been cleaned up and something bout where the valve bosses have been ground down(was told needed to do that to run 1.6 rockers with .510 lift cam) but just started it tonight and dont have the thump i want and also was told those heads wouldnt hold much more cam....Im new at this bare with me
Reply With Quote Quick reply to this message
  #8 (permalink)  
Old 08-13-2009, 07:10 AM
How fast is fast enough?
 
Last photo:
Join Date: Jun 2005
Location: St. Louis, MO
Age: 29
Posts: 9,087
Wiki Edits: 0

Thanks: 17
Thanked 333 Times in 313 Posts
What cam do you have?
Reply With Quote Quick reply to this message
  #9 (permalink)  
Old 08-13-2009, 08:25 PM
if it can go wrong it will
 
Join Date: Aug 2009
Location: Virginia
Age: 28
Posts: 49
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Comp cam .501/.501 lift 292 duration.....not sure its working with these heads good and i was wrong they are factory 1.5 rockers victor jr. +1 intake holley 750 dbl pump.....slugish on bottom end even with 3000stall think its too much cam?
Reply With Quote Quick reply to this message
  #10 (permalink)  
Old 08-13-2009, 09:10 PM
F-BIRD'88's Avatar
Yada Yada Yada
 
Last photo:
Join Date: Oct 2005
Location: Ontario, Canada
Posts: 9,153
Wiki Edits: 0

Thanks: 5
Thanked 380 Times in 374 Posts
Quote:
Originally Posted by Short_box
Comp cam .501/.501 lift 292 duration.....not sure its working with these heads good and i was wrong they are factory 1.5 rockers victor jr. +1 intake holley 750 dbl pump.....slugish on bottom end even with 3000stall think its too much cam?

With a comp 292H magnum cam and vic Jr intake you want to run a 4000-4500 stall for best/hardest launch. This combo needs a 3500stall at minumum.
3000stall is not really enough.

You want to give this set up all the inital spark timing at idle it deserves to maximize low rpm response and idle quality. Try locking out the mechanical advance curve and set the frozen timing at 34-36deg at idle.

make sure the cam is installed a bit advanced on a 104-106 intake C/L.
needs 10:1+cr

You'll find it a lot more spunkier overall when set up like this.
The 041 heads will need significant porting and 11:1+ cr to get 450hp from this 350 combo.
Don;t be shy on the rear gear ratio with this combo. The engine wants to rev.

Last edited by F-BIRD'88; 08-13-2009 at 09:16 PM.
Reply With Quote Quick reply to this message
  #11 (permalink)  
Old 08-14-2009, 10:34 PM
if it can go wrong it will
 
Join Date: Aug 2009
Location: Virginia
Age: 28
Posts: 49
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Thanks for that extra info.....ive never degreed a cam and all that and as far as the timing goes i turned the distributor as far as the hei cap would let me and only squeezed 22 according to the timing tape on the balancer what do i do to get more? Im supposed to go to a dyno at the strip tomorow they are having a special 3 runs for 60 bucks....im new at this and hate watching someone do it and learn id rather be told and do it myself so any more advice i will definatly listen.
Reply With Quote Quick reply to this message
  #12 (permalink)  
Old 08-15-2009, 02:14 AM
F-BIRD'88's Avatar
Yada Yada Yada
 
Last photo:
Join Date: Oct 2005
Location: Ontario, Canada
Posts: 9,153
Wiki Edits: 0

Thanks: 5
Thanked 380 Times in 374 Posts
You'll ahve to pull out the distributor (engine at TDC top of the compression stroke #1 cylinder ) turn the oil pump drive and bit and reinstall the distributor.
( repeat as nessessary till you get it right. Then reset the timing withn a timing light. (assuming the timing tab is located correctly to indicate true TDC)

A stock distributor will not work with the 292H cam.
(very sluggish low rpm response, poor idle that "loads up") not enough initial idle advance, when set at 34-36 total.
You must rework the distributor advance curve (limit the internal mechanical advance travel) for the big duration camshaft or simply lock out the mechanical advance. The timing is now frozen "locked out" and does not advance with rpm. The motor with this racey 292H cam can use all the WOT full timing (34-36deg) right at idle that locked out timing allows. Try it.

With .501" valve lift the clearance between the retainer bottom and top of the guide boss (seal) must be verified. you need .570" minimum clearance for that cam with 1.5 rockers. may require machining or you will be bending pushrods and crushing seals or worse. Stock unmodified OEM heads have limited clearance for high valve lift. Something you want to check.

Last edited by F-BIRD'88; 08-15-2009 at 02:27 AM.
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
the history of chevy v8's savman1 Hotrodders' Lounge 43 03-02-2012 06:57 PM
350 chevy heads question pena0724 Engine 7 03-02-2009 06:09 AM
chevy 406 Heads and cam questions 66sedanman Engine 26 02-29-2008 04:05 PM
487 Chevy Heads Chevy21 Engine 4 01-25-2005 05:20 PM
041 chevy heads joesnova2 Engine 3 12-27-2002 06:46 PM


All times are GMT -6. The time now is 01:13 PM.


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.