sbc 434 stroker - 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> Hotrodding Basics
User Name
Password
lost password?   |   register now

Reply
 
LinkBack Thread Tools
  #1 (permalink)  
Old 04-21-2013, 04:16 PM
Registered User
 
Join Date: Apr 2013
Posts: 1
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
sbc 434 stroker

Hi Guys! I have built some extreme enginges in the past but this is the first large displacement small block that I'm looking at doing. I have a 1976 2 bolt main chevy 400, which is being machined as I post this, to a splayed 4 bolt. Boring it out .030 but I want to take it to a 4.00 stroke. Target compression ratio is 9.0 to 9.5. Max rpm would be 5500, no more. Engine is being built for a boat, open cooling system ran in fresh water lakes. Will I need to clearance the block for the crank? Any danger of cracking the block. Anybody have personal experience doing this? Can I use a stock oil pan?

Thanks in advance for the info

    Advertisement
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2 (permalink)  
Old 04-21-2013, 04:38 PM
Registered User
 
Join Date: Oct 2008
Location: Mora,MN
Posts: 422
Wiki Edits: 0

Thanks: 0
Thanked 8 Times in 8 Posts
Quote:
Originally Posted by gforcems12 View Post
Hi Guys! I have built some extreme enginges in the past but this is the first large displacement small block that I'm looking at doing. I have a 1976 2 bolt main chevy 400, which is being machined as I post this, to a splayed 4 bolt. Boring it out .030 but I want to take it to a 4.00 stroke. Target compression ratio is 9.0 to 9.5. Max rpm would be 5500, no more. Engine is being built for a boat, open cooling system ran in fresh water lakes. Will I need to clearance the block for the crank? Any danger of cracking the block. Anybody have personal experience doing this? Can I use a stock oil pan?

Thanks in advance for the info
if you still can, stop the machine work and just order an aftermarket block now.
chances are good you'll hit water because yes, you'll need to clearance the block.
and stock pan isn't going to work. check for a milodon stroker pan, they work well.
Reply With Quote Quick reply to this message
  #3 (permalink)  
Old 04-21-2013, 04:46 PM
vinniekq2's Avatar
Registered User
 
Join Date: Jun 2012
Location: BC,Canada
Age: 56
Posts: 8,639
Wiki Edits: 0

Thanks: 364
Thanked 857 Times in 819 Posts
a 421 is possible.I would buy the dart shp block.My 434 is in a dart little "M"
Reply With Quote Quick reply to this message
  #4 (permalink)  
Old 04-21-2013, 04:58 PM
vinniekq2's Avatar
Registered User
 
Join Date: Jun 2012
Location: BC,Canada
Age: 56
Posts: 8,639
Wiki Edits: 0

Thanks: 364
Thanked 857 Times in 819 Posts
you should not bore the engine with out pistons in hand...

you need heads to flow close to 300 cfm to rev 5500
Reply With Quote Quick reply to this message
  #5 (permalink)  
Old 04-21-2013, 09:54 PM
S10 Racer's Avatar
http://www.warsprints.com
 

Last journal entry: W.A.R. (Wingless Auto Racing) Sprint Car Racing
Last photo:
Join Date: Nov 2007
Location: At The Dirt Tracks
Age: 55
Posts: 1,938
Wiki Edits: 0

Thanks: 4
Thanked 74 Times in 66 Posts
How much is all that machine work costing? My machine shop wanted $800.00 to bore, hone, deck and splay a junkyard 2 bolt block. I opted to buy a brand new Dart SHP for $1600.00 for my build.
Reply With Quote Quick reply to this message
  #6 (permalink)  
Old 04-22-2013, 12:35 AM
Registered User
 
Last photo:
Join Date: Jan 2006
Location: cornelius
Posts: 710
Wiki Edits: 0

Thanks: 47
Thanked 12 Times in 12 Posts
IMO your going to pay a LOT of extra money for a few cubic inches. I cant see spending so much money for an engine that's only going to spin to 5500rpm. You may want to check out this book.
Amazon Amazon
Reply With Quote Quick reply to this message
  #7 (permalink)  
Old 04-22-2013, 07:54 AM
Registered User
 
Join Date: Feb 2013
Posts: 10
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Re:

S 10 Racer, donít you think itís a bit too expensive. Plaintoast, I totally agree with you.
Reply With Quote Quick reply to this message

Recent Hotrodding Basics 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:
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
Help building a 434 Stroker 69chevy 434ci Engine 30 06-02-2011 09:05 PM
434 Stroker in a 69 Chevelle 69chevy 434ci Engine 8 05-27-2011 09:01 AM
434 chevy stroker Hammerchvy Engine 2 01-07-2010 12:24 PM
sbc 434 stroker sb72elcamino350 Engine 11 03-17-2004 11:19 AM
sbc 434 stroker sb72elcamino350 Engine 0 03-10-2004 12:17 AM


All times are GMT -6. The time now is 03:19 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.