anyone ever had this problem? - Hot Rod Forum : Hotrodders Bulletin Board -- 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
lost password?   |   register now

LinkBack Thread Tools
  #1 (permalink)  
Old 09-22-2002, 07:35 AM
Join Date: Aug 2002
Posts: 131
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Post anyone ever had this problem?

ok i have a 400 sbc and was gonna put it in my truck the other night i went to bolt the exhaust manifolds on before i stuck it in and guess what they didnt fit the motor is a 70 to a 73 model and the manifold i have came off of a 305 sbc in an 81 silverado the passenger side manifold fir all except the last bolt hole didnt line up the manifold was a litle too long but the rest of the holes lined up perfectly on the side and on the drivers side the manifold covered up the dipstick hole but all the bolt holes lined up on that side so what is my problem here i have never ran across this i have the manifolds that came with the 400 but had to change the passenger head cause mine was cracked but the head was the same as my old one so will these manifolds work and why wont the others work hell i thought they were all the same but im a redneck tho thanks for the help

Reply With Quote Quick reply to this message
Sponsored Links
  #2 (permalink)  
Old 09-22-2002, 09:33 AM
Deuce's Avatar
Registered User
Last wiki edit: Choosing a trailer
Last journal entry: Jan 13 2013
Last photo:
Join Date: Aug 2002
Location: Deuceland USA
Age: 69
Posts: 5,657
Wiki Edits: 6

Thanks: 0
Thanked 11 Times in 10 Posts

About 1979 Chevrolet added the 7th bolt hole to the heads and moved their exhaust manifolds bolt pattern to match. The 1979 and up heads will accept pre 79 exhaust manifolds but the early heads will not accept the later manifolds.

Just find a pre 79 exhaust manifold that fits your combonation.......
Reply With Quote Quick reply to this message
  #3 (permalink)  
Old 09-23-2002, 04:23 AM
Registered User
Join Date: Sep 2002
Location: central texas
Posts: 5
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts

chevy made a steel plate that bolts to the number eight exhaust port and allows you to install the late model manifold to the head. mid eighties had quite a few of them on the road so finding a plate to fit yours shouldnt be a problem.
Reply With Quote Quick reply to this message
  #4 (permalink)  
Old 09-23-2002, 04:45 AM
Join Date: Aug 2002
Posts: 131
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts

hey thanks guys i have the old manifolds that came on the 400 so ill use them they should work i guess in the past i stayed with the older stuff and thats why it all interchanged hell take it out of one and put it in another no prob. butthe newer you get the more complicated i guess but thanks again guys
Reply With Quote Quick reply to this message

Recent Engine posts with photos

Quick Reply

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:
Please enter a password for your user account. Note that passwords are case-sensitive.
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:
Please select your insurance company (Optional)


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

All times are GMT -6. The time now is 10:10 AM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0 PL2
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright 1999 - 2012. All Rights Reserved.