Vortec on old block?? - 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 08-28-2002, 04:24 PM
Member
 

Last journal entry: Doors
Last photo:
Join Date: Aug 2002
Location: new york
Posts: 168
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Post Vortec on old block??

Im thinking about installing vortec heads on my car. I am basically going for low end tourqe and good effiency and economy. The one's i am thinking about getting are 64'cc and 1.94 valves. I already have an edelborke s-p-2-p economy manifold. Would these heads give me good low end tourqe and good economy?? The block is a sbc 350, 72' vette block. And i will be putting it into my 69 firebird with a 700 R4 tranny with 3.18 rear end. Also id have to modify my intake by drilling out the holes and putting in spaced washers in. ALso will i lose alot buy not having the exhaust gas go under the intake with the vortec heads. I will also be using headers with daul exhaust.

Thanks for any advice it is really apprecaited

    Advertisement
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2 (permalink)  
Old 08-28-2002, 04:47 PM
Member
 
Join Date: Dec 2001
Location: Lubbock, Texas
Posts: 294
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Post

I'm not faliliar with that manifold but are you sure it will fit the vortec heads. The vortec heads only have 4 bolt holes.

I'm putting a set of vortecs on an '82 350, which I had to buy a designated intake to fit. As far as fitting the older block I think they would fit. I'm not sure if chev. changed the blocks much.
Reply With Quote Quick reply to this message
  #3 (permalink)  
Old 08-29-2002, 06:05 AM
Member
 
Join Date: Jul 2002
Location: Houston, Tx
Posts: 176
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Post

The Vortec heads should bolt onto the older block, however you will have to get a different intake as that intake will not work with the Vortec heads. You need to get a Vortec compatible intake.
Reply With Quote Quick reply to this message
  #4 (permalink)  
Old 08-29-2002, 08:09 AM
Member
 
Join Date: Dec 2001
Location: Lubbock, Texas
Posts: 294
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Post

I just purchased an intake for $168.00 from Scoggin Dickey. The intake is an Edlebrock Performer RPM I was told it only comes in a square bore style for the Vortec heads.
Reply With Quote Quick reply to this message
  #5 (permalink)  
Old 08-29-2002, 09:04 AM
Member
 

Last journal entry: Doors
Last photo:
Join Date: Aug 2002
Location: new york
Posts: 168
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Post

But, the manifold that i want to use is from the 80's it is a high tourqe good econmy mainifold which they dont make anymore since everyone moved up to TBI injection. Is there away i can that that old manifold to fit??
Reply With Quote Quick reply to this message
  #6 (permalink)  
Old 08-29-2002, 11:34 AM
Member
 
Join Date: Dec 2001
Location: Lubbock, Texas
Posts: 294
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Post

Sorry, it won't fit. You can use a TBI head and oblong the two center holes. But the tbi heads aren't as good as the vortec. If you want to use your manifold you might want to seek out some double hump 2.02 heads.
Reply With Quote Quick reply to this message
  #7 (permalink)  
Old 08-29-2002, 03:22 PM
72 chevy's Avatar
Member
 
Join Date: May 2002
Location: Plainville,K.S.
Posts: 242
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Post

So, is the head bolt pattern the same for all years of 350 blocks, and vortecs fit em all?? <img src="confused.gif" border="0">
Reply With Quote Quick reply to this message
  #8 (permalink)  
Old 08-30-2002, 06:07 AM
Member
 
Join Date: Dec 2001
Location: Lubbock, Texas
Posts: 294
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Post

I'm pretty sure they are, but don't take my word for it, it may depend on how old the block is. I'm not sure when GM changed the blocks if they ever did.
Reply With Quote Quick reply to this message
  #9 (permalink)  
Old 08-30-2002, 11:59 AM
Stinkin_V8's Avatar
Suburbanite Member
 
Last photo:
Join Date: Apr 2002
Location: SK, Canada
Age: 46
Posts: 323
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Post

I saw online somewhere where a guy welded an extension on the sides of a "standard" intake and re-worked the port sizes and bolt holes to use the Vortec heads. Now this was a 4.3L, not a 5.7L, but from what I understand, the fitting problems are the same. It was a Syclone/Typhoon page somewhere but I can't remember much more. I remember seeing a note that some guys change the location of the studs on the Vortec heads and then use a spacer plate under the intake. Sounds like a lot of work to me, way out of my league..
__________________
When life hands you lemons, ask for tequila and salt
Reply With Quote Quick reply to this message
  #10 (permalink)  
Old 08-31-2002, 11:45 AM
Deuce's Avatar
Hotrodders.com Moderator
 
Last wiki edit: Choosing a trailer
Last journal entry: Jan 13 2013
Last photo:
Join Date: Aug 2002
Location: Deuceland USA
Age: 66
Posts: 5,657
Wiki Edits: 6

Thanks: 0
Thanked 9 Times in 9 Posts
Talking

[quote]Originally posted by 72 chevy:
[QB][/QB]<hr></blockquote>

I have a catalog from Jim Pace Chevrolet 1-888-748-4675. They have brand new Vortec small block Chevrolet heads that are modiflied to accept the older style intake manifolds......price $510 a pair.
__________________


"I won't be wronged . I won't be insulted, and I won't be laid a hand on. "






Reply With Quote Quick reply to this message
  #11 (permalink)  
Old 08-31-2002, 09:07 PM
Registered User
 
Join Date: Aug 2002
Location: Aberdeen Maryland
Posts: 3
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Post

I have one of those sp2p 4bbl intakes. The passages are so small I decided not to use it on my 283! Probably would be ok if you never plan on seeing 5000 but the 350 will have plenty torque even with bigger passages.
Did you look into the cam/intake pachages such as Edelbrock performer?
Reply With Quote Quick reply to this message
  #12 (permalink)  
Old 09-03-2002, 11:33 AM
bullheimer's Avatar
NEVER use credit cards!
 

Last journal entry: car with tt2's, (stockers going back on)
Last photo:
Join Date: Jan 2002
Location: North of Seattle
Posts: 2,529
Wiki Edits: 0

Thanks: 0
Thanked 5 Times in 4 Posts
Post

FRom what ive read the non vortec intake will work if you elongate the holes that go in vertically instead of at an angle in the center 2 positions so no biggie
Reply With Quote Quick reply to this message
  #13 (permalink)  
Old 09-03-2002, 07:20 PM
MI2600's Avatar
Member# 3287
 

Last journal entry: Vortec Heads
Last photo:
Join Date: Jul 2002
Location: N. Muskegon, MI
Posts: 2,632
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Post

You can elongate the center manifold holes all you want to, but there are no holes in the heads! I would suggest going with a Vortec intake rather than cobbling up a good manifold. By the time you buy a set of old camelbacks you'll probably have $300-$400 invested. The Edelbrock intakes, either Performer or Performer RPM, are less than $200.
Reply With Quote Quick reply to this message
  #14 (permalink)  
Old 10-11-2002, 08:33 PM
Registered User
 
Join Date: Oct 2002
Location: Jackson, TN
Posts: 2
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Post

Really want to use them heads and intake comb?? Yes it can be done. Take the heads and intake to a machine shop, have them cut the bolt holes for the intake. Get the older style gasket set and there you go. How do I know?? It's what I race with. Vortec Heads, Marine Bowtie Intake, Rochester two barrel.
Reply With Quote Quick reply to this message
  #15 (permalink)  
Old 10-12-2002, 09:27 PM
Member
 
Join Date: May 2002
Posts: 71
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Post

And how much does it cost getting the bolt holes cut for the intake compared to the price of an intake?
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



All times are GMT -6. The time now is 01:04 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.