406 Engine Build...What do you think? - Page 3 - 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
  #31 (permalink)  
Old 12-14-2012, 08:13 PM
How fast is fast enough?
 
Last photo:
Join Date: Jun 2005
Location: St. Louis, MO
Age: 29
Posts: 9,082
Wiki Edits: 0

Thanks: 17
Thanked 333 Times in 313 Posts
Quote:
Originally Posted by lhmurphy View Post
Are you two dating?
Someone call the ambulance, we've just been burned!

    Advertisement
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #32 (permalink)  
Old 12-14-2012, 08:18 PM
lhmurphy's Avatar
Registered User
 
Join Date: Dec 2012
Location: Indiana
Posts: 183
Wiki Edits: 0

Thanks: 34
Thanked 6 Times in 5 Posts
No burn intended just want you to tell me why I have NFC? Lol and what you would do too make this build not a "NFC" build...in all seriousness
Reply With Quote Quick reply to this message
  #33 (permalink)  
Old 12-14-2012, 08:19 PM
How fast is fast enough?
 
Last photo:
Join Date: Jun 2005
Location: St. Louis, MO
Age: 29
Posts: 9,082
Wiki Edits: 0

Thanks: 17
Thanked 333 Times in 313 Posts
Quote:
Originally Posted by lhmurphy View Post
All joking aside, you guys really think this build is junk?
Other than having to much compression, mystery cylinder heads, too small of a carb, and not knowing that the rod does NOT affect the stroke it's not too bad.
Reply With Quote Quick reply to this message
  #34 (permalink)  
Old 12-14-2012, 08:21 PM
texastomeh's Avatar
Registered User
 
Last photo:
Join Date: Jul 2004
Location: Dallas, TX
Posts: 278
Wiki Edits: 0

Thanks: 8
Thanked 6 Times in 5 Posts
Quote:
I just posted so I could see how accurate these forums are and if I would really wanna join...so that's why I posted this to see how many people would chime in about compression and say it wouldn't run 15 minutes or idle smooth...looks like my test is done
Did you hear the one about the TROLL that walks into a bar with his head up his *** ........

Tom
Reply With Quote Quick reply to this message
  #35 (permalink)  
Old 12-14-2012, 08:26 PM
lhmurphy's Avatar
Registered User
 
Join Date: Dec 2012
Location: Indiana
Posts: 183
Wiki Edits: 0

Thanks: 34
Thanked 6 Times in 5 Posts
Quote:
Originally Posted by ap72 View Post
Other than having to much compression, mystery cylinder heads, too small of a carb, and not knowing that the rod does NOT affect the stroke it's not too bad.
The 6 inch rod pushes the piston slightly higher in the bore compared to a 5.7 rod...its not .3 higher like people might think i meant, the piston used for the 6 inch rod is slightly higher in the bore when at tdc compare to the 5.7 rod/piston and I will agree with the too small of carb...heads are made by blueprint engines...195cc intake runners, 2.02 and 1.60 valves, 64cc combustion chambers...and why do you think my compression is too high?
Reply With Quote Quick reply to this message
  #36 (permalink)  
Old 12-14-2012, 08:31 PM
vinniekq2's Avatar
Registered User
 
Join Date: Jun 2012
Location: BC,Canada
Age: 56
Posts: 8,063
Wiki Edits: 0

Thanks: 322
Thanked 783 Times in 749 Posts
Grabbed a cold one,and hoping this thread gets busy,betting tech is also monitoring
Reply With Quote Quick reply to this message
  #37 (permalink)  
Old 12-14-2012, 08:41 PM
lhmurphy's Avatar
Registered User
 
Join Date: Dec 2012
Location: Indiana
Posts: 183
Wiki Edits: 0

Thanks: 34
Thanked 6 Times in 5 Posts
Quote:
Originally Posted by vinniekq2 View Post
Grabbed a cold one,and hoping this thread gets busy,betting tech is also monitoring
Just give me your opinion please about why my compression is too high? Do u mean too high for pump gas? Or too high for my cam? Just looking for help and not looking to post jokes...I apologize for my earlier comments if they offended anyone who is part of the hot rod forum and part of this post
Reply With Quote Quick reply to this message
  #38 (permalink)  
Old 12-14-2012, 08:53 PM
lhmurphy's Avatar
Registered User
 
Join Date: Dec 2012
Location: Indiana
Posts: 183
Wiki Edits: 0

Thanks: 34
Thanked 6 Times in 5 Posts
Quote:
Originally Posted by techinspector1 View Post
I'm with Mr. Minter, I don't see a 14cc dish piston for the 400 block from Probe. If you have such a piston on hand and intend to use them with 64cc chambers, the SCR will be on the order of 10.6:1.

With a 6" rod, the wrist pin will be pushed up into the oil ring, something that I will not build. You won't see a nickel's difference in performance between a 5.7" rod and a 6" rod and you don't have to crutch the ring land to prevent snagging.
Do you not think that a 6 inch rod will reduce angularity? Which will in turn put less stress on the rod and also won't the rod spend more time at TDC compared to a 5.7 rod? Which would in turn create better high rpm efficiency?
Reply With Quote Quick reply to this message
  #39 (permalink)  
Old 12-14-2012, 09:07 PM
How fast is fast enough?
 
Last photo:
Join Date: Jun 2005
Location: St. Louis, MO
Age: 29
Posts: 9,082
Wiki Edits: 0

Thanks: 17
Thanked 333 Times in 313 Posts
Quote:
Originally Posted by lhmurphy View Post
No burn intended just want you to tell me why I have NFC? Lol and what you would do too make this build not a "NFC" build...in all seriousness
The rod doesn't affect the stroke one damn bit, the heads may have been purchased from blueprint, but they do not cast heads- find out where the heads were cast and what they are, likely offshores but that doesn't mean they won't work there are some good offshore heads. A lot of people also sell World or Dart heads under their own name so it could be those too.

the compression is too high for pump gas. it can be made to run buy pulling out timing, running it cold, and running it a hair rich, but it will be down on power compared to if you ran less compression and tuned it right.

Also, on a side note, while thumper cams are sold purely for sound and they do deliver on that respect, they have way too much exhaust duration for most heads. Oddly enough though the smaller one will work well with older heads like camel humps as the overlap can help make the most out of a restrictive intake port- at 195cc's your ports are likely not restrictive until the upper RPM's though and the excessive overlap is costing you power and probably giving you some major reversion at low rpm.
Reply With Quote Quick reply to this message
  #40 (permalink)  
Old 12-14-2012, 09:16 PM
lhmurphy's Avatar
Registered User
 
Join Date: Dec 2012
Location: Indiana
Posts: 183
Wiki Edits: 0

Thanks: 34
Thanked 6 Times in 5 Posts
I think the rod does effect stroke bc a 6 inch rod compared to a 5.7 will reduce piston velocity which will make it able to run slightly higher compression...the castings are made overseas but blueprint does the valve job and puts their parts on them...they claim it's their own casting
Reply With Quote Quick reply to this message
  #41 (permalink)  
Old 12-14-2012, 09:22 PM
lhmurphy's Avatar
Registered User
 
Join Date: Dec 2012
Location: Indiana
Posts: 183
Wiki Edits: 0

Thanks: 34
Thanked 6 Times in 5 Posts
And I've seen this same cam in a 350 with 4 valve relief pistons (stock) that had 64cc combustion chambers, 2.02 1.6 valves, and not sure but I believe he had 416 casting heads built to those specs, and he had a 670 avenger and a high rise single plane intake, and his motor ran very smooth and you could rev it to 6000 pretty easy...sounds crazy but I'm not joking...he had 3.73 gears and a 700r4...pretty impressive for a cheap build
Reply With Quote Quick reply to this message
  #42 (permalink)  
Old 12-14-2012, 09:24 PM
How fast is fast enough?
 
Last photo:
Join Date: Jun 2005
Location: St. Louis, MO
Age: 29
Posts: 9,082
Wiki Edits: 0

Thanks: 17
Thanked 333 Times in 313 Posts
Quote:
Originally Posted by lhmurphy View Post
I think the rod does effect stroke bc a 6 inch rod compared to a 5.7 will reduce piston velocity which will make it able to run slightly higher compression...the castings are made overseas but blueprint does the valve job and puts their parts on them...they claim it's their own casting
Well, you can think it all you want but you're wrong. It doesn't affect it a little, or kinda, or slightly, or a lot, or maybe, or anything else. It doesn't affect it at all.

As for piston velocity it does affect it SLIGHTLY, plot out the piston travel though and you'll see how little that "slightly" is. It will help a little on induction but its not a miracle worker.

Track the casting numbers and marking to find out who/what cast those heads. There are some good offshore castings, and a lot of crappy ones too.

BTW, are the heads aluminum or iron? Have a picture of the chamber?
Reply With Quote Quick reply to this message
  #43 (permalink)  
Old 12-14-2012, 09:29 PM
lhmurphy's Avatar
Registered User
 
Join Date: Dec 2012
Location: Indiana
Posts: 183
Wiki Edits: 0

Thanks: 34
Thanked 6 Times in 5 Posts
Aluminum and here is he part #H8002K...there is a forum somewhere and a blueprint manager shows the flow chart and tells about them...search "blueprint cylinder head reviews" on google
Reply With Quote Quick reply to this message
  #44 (permalink)  
Old 12-14-2012, 10:03 PM
How fast is fast enough?
 
Last photo:
Join Date: Jun 2005
Location: St. Louis, MO
Age: 29
Posts: 9,082
Wiki Edits: 0

Thanks: 17
Thanked 333 Times in 313 Posts
Well, after a quick look at those heads while they're not spectacular they're not too bad, and they could actually benefit from some valve deshrouding. that's good for you on two accounts. You can increase the marginal flow a little bit, AND by taking out a few cc's you can also drop your compression to something that is a bit more pump gas friendly allowing you to run a decent coolant temp, good carb tune, and optimal ignition timing.

Your power will come up across the board.

You don't need to get crazy so a grinder and a few reglite cartridge rolls should be enough, 3-4cc's can make a pretty big difference when you're right on the edge.
Reply With Quote Quick reply to this message
  #45 (permalink)  
Old 12-14-2012, 10:11 PM
lhmurphy's Avatar
Registered User
 
Join Date: Dec 2012
Location: Indiana
Posts: 183
Wiki Edits: 0

Thanks: 34
Thanked 6 Times in 5 Posts
I may check into that! Thanks man...the reason I really wasn't worried about compression is bc my friend basically ran flat top pistons with 64cc chambered heads with 2.02/1.6 and the same cam I have and he was at 36* all in by 3000 rpm, he used 93 octane and it never showed signs of detonation...and his 350 motor really idled awesome and ran great...I know he had .39 compressed thickness gaskets...I'm taking your deshrouding idea into consideration and will talk to my machinist and see if he thinks I should do it...I appreciate your info
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
406 Build crowerjunky Engine 6 01-31-2011 06:42 PM
406 build chevyguy13 Hotrodding Basics 4 04-23-2009 06:09 PM
chevy 406 engine build jak327 Engine 14 02-06-2009 10:11 PM
Help With 406 Engine Build Olds86 Engine 39 09-04-2008 07:02 PM
New 406 build Steve karch Engine 21 12-19-2006 08:30 AM


All times are GMT -6. The time now is 04:52 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.