? confused! - 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> General Rodding Tech
User Name
Password
lost password?   |   register now

Reply
 
LinkBack Thread Tools
  #1 (permalink)  
Old 01-31-2013, 07:16 PM
theoldman
 
Join Date: Jan 2013
Location: graham, tx
Posts: 3
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
? confused!

i have a 72 olds 98 with a 455 olds rocket. going to replace the intake and carb with edlebrock parts. what would be the best cfm edlebrock carb to use on this stock engine? i was told to use a 600cfm on the stock engine but also told to use a 750cfm. confused now. also trying to find headers for this engine but cant find any for this car. was told by sanderson headers that i could use 350 rocket headers in the 72 98 and they would work for the 455. is this true?

    Advertisement
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2 (permalink)  
Old 01-31-2013, 07:40 PM
Registered User
 
Join Date: Jan 2013
Posts: 5
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
I think the 400,425,455 are the same not many choices out there for the 98 Hooker also has a block hugger that may fit your application. we've done a few 350 Olds motors with long tube Hookers but they are a bear to install a fit around the starter. The Edlebrock performer intake is a good choice for street cars, we use the 600 on mild performance upgrades but is not cfm for highly modified big blocks. I have a buddy with a 69 caddy 472 that runs a 600 Edlebrock with no issues.
Reply With Quote Quick reply to this message
  #3 (permalink)  
Old 02-01-2013, 06:32 AM
theoldman
 
Join Date: Jan 2013
Location: graham, tx
Posts: 3
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
i am going to use an edelbrock torker 2 intake and edelbrock reccomends the 750 cfm performer series carb. the problem with the headers is no one makes a header for the 455 that will fit in my olds 98. sandersons makes custom headers for rat rods and they said the only header that will fit that motor in this particulair car is for a 350 rocket that they make. apparently there are some frame issues in the 98 that do not allow for the bigger headers to fit. wondering if the smaller headers will restrict my 455 and if the 750 cfm will be to much carb for my 455.
Reply With Quote Quick reply to this message
  #4 (permalink)  
Old 02-01-2013, 06:58 AM
Registered User
 
Join Date: Jan 2013
Posts: 5
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
nothing wrong with a Torker or Torker II they are single plane intakes designed for higher rpm applications if your planning on kicking up the cam and internals to complement the induction its a good choice. street driving usually lends itself to lower rpm driving (traffic, stop & go and so on) that's were the Performer (pn 2151) lives its dual plane design still gives high rpm performance but still has low rpm drivability. the 750 cfm carb is not too big for the 455 it just may be a little fat until you tune it to the engine, the 600 will need to be tuned as well, everything is based on what you want to do with the car. Hooker pn 3401-1 Olds 455 chassis fitment is the hard part on any header you find.
Reply With Quote Quick reply to this message
  #5 (permalink)  
Old 02-01-2013, 10:19 AM
Registered User
 
Last wiki edit: Wheelbase database Last photo:
Join Date: Jan 2007
Location: Virginia
Posts: 3,549
Wiki Edits: 1

Thanks: 6
Thanked 153 Times in 140 Posts
First, most header manufacturers show their 64-77 442 headers as also fitting the 71-76 full size cars. The 455 has the same exhaust flange as the 350, so their headers will bolt up, but the deck height is different, so there's no guarantee that anything fits. Frankly, I doubt that shorty headers are any better than the factory W/Z exhaust manifolds used on the 442s. These DO fit in the 71-76 full size cars.

I question if you really want a Torker in a heavy Ninety Eight. That car is probably every bit of 4500 lbs or more. Unless you plan to make many other mods to match, including cam and rear gears, it's a waste and may even kill low end torque. The dual plane Performer is probably a better bet. Personally I'd use a Qjet, but if you're one of these people who can't seem to wrap their head around a Qjet, the 455 needs at least a 750 CFM carb.
Reply With Quote Quick reply to this message
  #6 (permalink)  
Old 02-01-2013, 01:31 PM
theoldman
 
Join Date: Jan 2013
Location: graham, tx
Posts: 3
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
awesome!

you guys have been a huge help! i really appreciate it! now if i could just find the headers that will fit that would be awesome.
Reply With Quote Quick reply to this message
  #7 (permalink)  
Old 02-01-2013, 02:07 PM
painted jester's Avatar
TAKE A KID TO A CAR SHOW
 

Last journal entry: mopar hump back
Last photo:
Join Date: Jan 2011
Location: Central Michigan
Age: 68
Posts: 1,819
Wiki Edits: 0

Thanks: 103
Thanked 281 Times in 229 Posts
Did you call Doug Thorly if your calling summit jegs etc. they will tell you what they list in the catalogs! But many header company's may have them on a shelf gathering dust and aren't listing them!
Doug Thorly
Long Tube Headers
1965-72 Oldsmobile 442 400-455 V8
Excluding Convertibles
Reply With Quote Quick reply to this message
  #8 (permalink)  
Old 02-01-2013, 02:18 PM
Registered User
 
Last wiki edit: Wheelbase database Last photo:
Join Date: Jan 2007
Location: Virginia
Posts: 3,549
Wiki Edits: 1

Thanks: 6
Thanked 153 Times in 140 Posts
Quote:
Originally Posted by painted jester View Post
Did you call Doug Thorly if your calling summit jegs etc. they will tell you what they list in the catalogs! But many header company's may have them on a shelf gathering dust and aren't listing them!
Doug Thorly
Long Tube Headers
1965-72 Oldsmobile 442 400-455 V8
Excluding Convertibles
^^^^^^^^^^^^^ The usual "excluding convertibles" or "won't fit Cutlass Supreme" footnotes in every header manufacturer's catalog are flat wrong. This is a constant source of confusion for the Oldsmobile community.

Back to the OP's question: Many header manufacturers show that their headers fit the 1971-76 Delta 88. While not listed, that means that the same headers also fit the Ninety Eight. There's no difference between the D88 and the 98 forward of the firewall. The only mechanical difference is that the 98 has a longer wheelbase. The extra length is in the back seat area and has no effect on header fitment.

Use Summit's search function, and select Delta 88 and 455 engine. I get 19 different headers that fit your car, just from the Summit online catalog.
Reply With Quote Quick reply to this message
  #9 (permalink)  
Old 02-01-2013, 02:51 PM
painted jester's Avatar
TAKE A KID TO A CAR SHOW
 

Last journal entry: mopar hump back
Last photo:
Join Date: Jan 2011
Location: Central Michigan
Age: 68
Posts: 1,819
Wiki Edits: 0

Thanks: 103
Thanked 281 Times in 229 Posts
Quote:
Originally Posted by joe_padavano View Post
^^^^^^^^^^^^^ The usual "excluding convertibles" or "won't fit Cutlass Supreme" footnotes in every header manufacturer's catalog are flat wrong. This is a constant source of confusion for the Oldsmobile community.

Back to the OP's question: Many header manufacturers show that their headers fit the 1971-76 Delta 88. While not listed, that means that the same headers also fit the Ninety Eight. There's no difference between the D88 and the 98 forward of the firewall. The only mechanical difference is that the 98 has a longer wheelbase. The extra length is in the back seat area and has no effect on header fitment.

Use Summit's search function, and select Delta 88 and 455 engine. I get 19 different headers that fit your car, just from the Summit online catalog.
Joe: Thanks for adding that
Its an example of a catalog listing I didn't say that those fit or not. But your right about some foot notes being wrong If he can't find them? I said to call the manufactures of headers, they may have a set gathering dust on a shelf that they don't list anymore. They don't list a lot of old intakes any more but intake manufacturers still have some on shelves gathering dust!!!! I called Micky Thompson and got an old stock cross ram they still had in there warehouse! I called Holley and got a 950 3 barrel they still had in the box! Its worth a try!!!

Jester
Reply With Quote Quick reply to this message
  #10 (permalink)  
Old 02-01-2013, 03:12 PM
Registered User
 
Last wiki edit: Wheelbase database Last photo:
Join Date: Jan 2007
Location: Virginia
Posts: 3,549
Wiki Edits: 1

Thanks: 6
Thanked 153 Times in 140 Posts
Quote:
Originally Posted by painted jester View Post
Its an example of a catalog listing I didn't say that those fit or not.
Actually, they do. And my footnote comment was a knee-jerk reaction, sorry. I've contacted several of the header manufacturers to try to get that corrected, but they insist that they know better.
Reply With Quote Quick reply to this message
  #11 (permalink)  
Old 02-01-2013, 03:51 PM
painted jester's Avatar
TAKE A KID TO A CAR SHOW
 

Last journal entry: mopar hump back
Last photo:
Join Date: Jan 2011
Location: Central Michigan
Age: 68
Posts: 1,819
Wiki Edits: 0

Thanks: 103
Thanked 281 Times in 229 Posts
Quote:
Originally Posted by joe_padavano View Post
Actually, they do. And my footnote comment was a knee-jerk reaction, sorry. I've contacted several of the header manufacturers to try to get that corrected, but they insist that they know better.

No need to apologist I took no offense LOL Knee jerks are good LOL My old knees don't jerk anymore; among other things my wife points out!!!

Jester
Reply With Quote Quick reply to this message

Tags
1972, 455, carb, headers, olds

Recent General Rodding Tech 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
confused carpe_diem Hotrodding Basics 2 01-04-2009 05:09 PM
Confused???? TEAMSTEVAN Body - Exterior 7 07-10-2006 08:33 AM
OK, now I'm more confused than before. 58Chev Electrical 4 03-18-2006 02:58 AM
Just a little Confused Chuckels2 Hotrodding Basics 2 08-24-2005 02:35 PM
Ok, Now I'm confused!?! HELP?!? JHayman2677 Engine 6 04-29-2004 07:22 AM


All times are GMT -6. The time now is 04:53 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.