454 build up - 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 05-17-2011, 07:52 PM
Registered User
 
Join Date: May 2011
Location: SFV CA,
Posts: 6
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
454 build up

Hello guys, here is my wuestion, i got a 454 long block out of a 1986 chevy 2500, since i already have some stuff im just wondering what i can use and what i cant.
the block is stock, i got this from a friend ,(out of a boat)215 oval port heads with the heavy duty triple valve springs,comp cams magnum 286h ,holley strip dominator oval port, i dont really want to overbored the block because i dont have extra $ to spend at the moment. this engine will be in a 1973 camaro with 4 speed muncie and 3.42 rear end gears.
thanks!!

    Advertisement
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2 (permalink)  
Old 05-17-2011, 08:18 PM
richard stewart 3rd's Avatar
Registered User
 

Last journal entry: 351W rebuild
Last photo:
Join Date: Jan 2006
Location: tremont, pa.
Age: 70
Posts: 2,218
Wiki Edits: 0

Thanks: 14
Thanked 15 Times in 14 Posts
Hi
Welcome to Hotrodders.com Glad to have you with us.

That's a rather large cam, should be about right for the track.
Rich
Reply With Quote Quick reply to this message
  #3 (permalink)  
Old 05-17-2011, 09:20 PM
Registered User
 
Join Date: May 2011
Location: SFV CA,
Posts: 6
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
is it? what would you recommend? thanks!
Reply With Quote Quick reply to this message
  #4 (permalink)  
Old 05-17-2011, 11:08 PM
richard stewart 3rd's Avatar
Registered User
 

Last journal entry: 351W rebuild
Last photo:
Join Date: Jan 2006
Location: tremont, pa.
Age: 70
Posts: 2,218
Wiki Edits: 0

Thanks: 14
Thanked 15 Times in 14 Posts
Hi
Comp Cams 'Magnum' Hydraulic Flat Tappet Camshafts 270H or 280H
The 270H won't affect your power brakes..510" L 270*D
I would use the 280H .520"L 280*D
Rich
Reply With Quote Quick reply to this message
  #5 (permalink)  
Old 05-17-2011, 11:25 PM
techinspector1's Avatar
Senior Curmudgeon
 
Last wiki edit: DynoSim combinations Last photo:
Join Date: Oct 2005
Location: Hemet, California, USA
Age: 72
Posts: 12,946
Wiki Edits: 326

Thanks: 760
Thanked 1,013 Times in 849 Posts
I wouldn't change anything until I knew more about the motor, like static compression ratio and piston deck height. You can't just reach out in the breeze and grab a cam without knowing what the motor wants. It might be just outside detonation right now and a shorter cam could push it over the limit for cylinder pressure on the available fuel. You just don't know until you measure the motor and know what you're dealing with. That's the way I see it.
Reply With Quote Quick reply to this message
  #6 (permalink)  
Old 05-18-2011, 08:41 PM
Registered User
 
Join Date: May 2011
Location: SFV CA,
Posts: 6
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
thanks guys, yes the short block is stock with the peanut port heads the CR was about 8.5 probably?but took off the heads trying to install this 215 with the bigger ports, the pistons are flat top, i don't know the CR yet because i haven't installed the heads, the camshaft,the heads, the intake, 750 cfm holley carb, this stuff came out of a jet boat and i only want to know what should i use since i already have them. my friend told me that milling the heads and getting the 1972 gm ls6 .022 head-gaskets increases the CR a little bit i been searching those gaskets and no one have them. are there any equivalent?
thank you again!!
Reply With Quote Quick reply to this message
  #7 (permalink)  
Old 05-18-2011, 08:53 PM
68NovaSS's Avatar
Hotrodders.com Moderator
 
Last wiki edit: Working with chromed bolts
Last journal entry: New to me T-Bucket
Last photo:
Join Date: Sep 2002
Location: Nine Mile Falls/Suncrest, WA
Posts: 5,249
Wiki Edits: 9

Thanks: 105
Thanked 133 Times in 124 Posts
Quote:
Originally Posted by jooe666
i don't know the CR yet because i haven't installed the heads,
Installing the heads isn't going to tell you anything about the c.r., you need the bore, piston type, dome/dish in cc's, valve reliefs or not, combustion chamber volume, deck height and gasket thickness to compute it.

Have you tried COMETIC for gaskets? They're pricey, but will make anything you want in MLS.
__________________
Boost adds dignity to what would otherwise be a vulgar brawl...

Midnight Sun Street Rod Association
Reply With Quote Quick reply to this message
  #8 (permalink)  
Old 05-18-2011, 10:11 PM
richard stewart 3rd's Avatar
Registered User
 

Last journal entry: 351W rebuild
Last photo:
Join Date: Jan 2006
Location: tremont, pa.
Age: 70
Posts: 2,218
Wiki Edits: 0

Thanks: 14
Thanked 15 Times in 14 Posts
Hi Jooe
At the link it will explain how to calculate your compression ratio
Rich

http://www.circletrack.com/techartic...ion/index.html
Reply With Quote Quick reply to this message
  #9 (permalink)  
Old 05-18-2011, 11:25 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
Mr gasket has a similar shim style 454 gasket.

You'll probabily like a Edelbrock performer rpm manifold on the street, better
than the strip dominator. The 286H cam is fine.

The higher the cr the better it will work. You have to CC your heads to determine the cr. Its not that hard to do.

Last edited by F-BIRD'88; 05-18-2011 at 11:30 PM.
Reply With Quote Quick reply to this message
  #10 (permalink)  
Old 05-19-2011, 12:36 AM
Registered User
 
Join Date: May 2011
Location: SFV CA,
Posts: 6
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
thanks guys rich, i see that my CR will be 9.1 ill sell the strip dominator,will the weiand stealth intake work as the edelbrock rpm? just wondering to save $, was looking on the cams specs and at least needs 9.5.1 CR, ill check Mr. gasket products, do you have a part #?
Reply With Quote Quick reply to this message
  #11 (permalink)  
Old 05-21-2011, 10:07 PM
richard stewart 3rd's Avatar
Registered User
 

Last journal entry: 351W rebuild
Last photo:
Join Date: Jan 2006
Location: tremont, pa.
Age: 70
Posts: 2,218
Wiki Edits: 0

Thanks: 14
Thanked 15 Times in 14 Posts
Hi Jooe
I've been gone (on the road) for a couple days, happens often.
Use the Stealth it has larger runners. How's everything else going?
Rich
Reply With Quote Quick reply to this message
  #12 (permalink)  
Old 05-21-2011, 10:53 PM
techinspector1's Avatar
Senior Curmudgeon
 
Last wiki edit: DynoSim combinations Last photo:
Join Date: Oct 2005
Location: Hemet, California, USA
Age: 72
Posts: 12,946
Wiki Edits: 326

Thanks: 760
Thanked 1,013 Times in 849 Posts
You can't buy the original style Stealth anymore, unless you find one used. The current part number has an "S" behind it, indicating Street and it is not the same manifold that we have come to love in the past. Want the real deal? Buy an RPM.
Reply With Quote Quick reply to this message
  #13 (permalink)  
Old 05-21-2011, 11:20 PM
richard stewart 3rd's Avatar
Registered User
 

Last journal entry: 351W rebuild
Last photo:
Join Date: Jan 2006
Location: tremont, pa.
Age: 70
Posts: 2,218
Wiki Edits: 0

Thanks: 14
Thanked 15 Times in 14 Posts
Tech I'm surprised at you, he has the stealth already & is trying to save some money.
Rich
Reply With Quote Quick reply to this message
  #14 (permalink)  
Old 05-22-2011, 09:26 AM
Member
 
Last photo:
Join Date: Dec 2004
Location: San Antonio, Texas
Age: 50
Posts: 4,023
Wiki Edits: 0

Thanks: 0
Thanked 23 Times in 23 Posts
should run ok with 9:1 cr with than cam (286H). More compression would be nice but not completely required in your case.

A 4 spd manual trans, 3.42 gear in a 73 camaro with a 454 can handle some parts mismatch and run decently.

I would prefer a 270H with that setup but I tend to undersize my cams because I like good street manors. A 280H would work about the best overall, but not a big enough difference between the 280H and 286H to justify a cam swap.

I like the regular RPM intake (not air gap). But I'm sure the stealth will work fine if you are on a budget.

This engine will like lots of initial ignition timing due to the cam size, lowish compression, and engine design (454 bbc with slow burn heads). say, 25-30 at idle and 40 total.
Reply With Quote Quick reply to this message
  #15 (permalink)  
Old 05-22-2011, 10:09 AM
Piland Triangle, Elroy, TX
 
Last photo:
Join Date: Dec 2009
Location: Dunlay, TX
Posts: 24
Wiki Edits: 0

Thanks: 0
Thanked 2 Times in 2 Posts
Boat motors often suffer from freeze damage. Inspect the block carefully for cracks & damage. I would pressure check it before investing in it. I hope all is well -Good Luck on the build!
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
400 SBC build djohnson308 Engine 8 07-10-2010 01:19 PM
USA BUILD vs CANADIAN BUILD? troy norrad Hotrodding Basics 19 02-18-2008 09:57 PM
200-4r experts - build questions - Which core is best to build on? Warrant Transmission - Rearend 7 10-09-2007 07:36 PM
build or buy captberke General Rodding Tech 5 08-30-2006 10:21 PM
want build my own newbe Transmission - Rearend 2 03-25-2006 05:52 AM


All times are GMT -6. The time now is 04:15 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.