Need some help building chevy 400 - 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 02-19-2006, 08:20 PM
Registered User
 
Join Date: Feb 2006
Location: kansas
Posts: 4
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Need some help building chevy 400

I am in the process of building a chevy 400. I am thinking of doing a 377 stroke. Since I have a 350 crank just sitting around. I am wanting to know if what im thinking is all correct. I want to put the 350 crank in the 400 so I will need to get main bearing spacers? I plan on running keith black pistons and would like a 11 or 12 to 1 compression. Can I also use the chevy 350 5.7" rod versus the 400 5.56" rod? I also think I have to bore it out .30 over? Is this correct? I will be running 202 double hump heads. Thanks alot for all of your help Also any idea on how this set up would be on horsepower. Its going in a 68 firebird with turbo 350 and 4.10 rear end gears.

    Advertisement
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2 (permalink)  
Old 02-19-2006, 08:58 PM
RPM's Avatar
RPM RPM is offline
World Class ASE tech
 
Last photo:
Join Date: Nov 2004
Location: Hills of TN
Age: 64
Posts: 704
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Yep you got it all correct. 350 crank and rods with 400 pistons. Your compression is too high for street use. I know you didn't say you were going to use it on the street, but thought I would mention that just incase.
Reply With Quote Quick reply to this message
  #3 (permalink)  
Old 02-19-2006, 09:19 PM
84 Z28 Convertible
 
Last photo:
Join Date: Mar 2002
Location: Enterprise, AL
Posts: 219
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
I personally would not destroke that engine....My SBC 408 makes a lot of torque down low and still putting up decent numbers up high. Remember their is No replacement for displacement. Take a look at my signature for the combo and the dyno result is in the link provided. I have made changes in the carb (Pro-System) and ignition system (MSD)so I should be alot better thamn wwhat the dyno results shows. My goal was to reach 500/500 but I did fall short on the HP but made 502tq.
Reply With Quote Quick reply to this message
  #4 (permalink)  
Old 02-19-2006, 09:27 PM
Registered User
 
Join Date: Feb 2006
Location: kansas
Posts: 4
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
i plan on running race gas anyway so the compression doesnt bother me unless it will hurt my performance for street? what it take to make a 408 and would a 408 with my set up be better then a 377 with what im using?
thanks
Reply With Quote Quick reply to this message
  #5 (permalink)  
Old 02-19-2006, 09:52 PM
84 Z28 Convertible
 
Last photo:
Join Date: Mar 2002
Location: Enterprise, AL
Posts: 219
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Quote:
Originally Posted by pontiacpower
i plan on running race gas anyway so the compression doesnt bother me unless it will hurt my performance for street? what it take to make a 408 and would a 408 with my set up be better then a 377 with what im using?
thanks
My 400 is bored .040, which make 408. Your might clean up at .030 for a 406. yes I would NOt destoke the engine unless you are trying to get a hig revving engine, but If you want to feel the power of a 400, build a strong bottom end and nice set of head. and enjoy the engine. I would really look into it and do plenty of research before converting to a 377. Why do you want the 377 and whats your budget to build this engine?
Reply With Quote Quick reply to this message
  #6 (permalink)  
Old 02-20-2006, 06:47 AM
Registered User
 
Join Date: Feb 2006
Location: kansas
Posts: 4
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
I have a good friend who did the 377 and he loves it. He gave me the idea for the stroker. I am trying to build this motor as cheap as i can. I dont have money for aftermarket heads or anything like that right now.
Reply With Quote Quick reply to this message
  #7 (permalink)  
Old 02-20-2006, 07:00 AM
Registered User
 
Join Date: Feb 2006
Location: batesville ark
Posts: 3
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
building a 377

we have a 377 in a mud truck and love it,i would recommend that you buy one piece bearings and stay away from stacking anything in the bottom end,summit has the bearings you need ,special order,you have to ask for them.
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
SBC 350 superiority rebuttle...was:POWERED BY CHEVY, WRITTEN ON A FORD, (from 'Engine Oldsmolac911 Hotrodders' Lounge 50 01-12-2011 10:00 PM
building a chevy into a olds Ace_Spades307 Introduce Yourself 1 11-28-2005 11:30 AM
817 block 400 chevy Chevy21 Engine 3 08-15-2005 02:26 PM
Chevy 400? 65_Chevy Engine 6 07-24-2005 09:24 PM
6"rods in 400 chevy small block 406chevelle Engine 17 06-20-2003 11:14 PM


All times are GMT -6. The time now is 04:37 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.