Oldsmobile Hi-Swirl Head indentification Help

General engine tech -- Drag Racing to Circle Track

Moderator: Team

Post Reply
maxracesoftware
Guru
Guru
Posts: 2672
Joined: Sat Feb 14, 2004 4:04 pm
Location: Abbeville, LA
Contact:

Oldsmobile Hi-Swirl Head indentification Help

Post by maxracesoftware » Thu Apr 12, 2018 12:36 am

Oldsmobile Hi-Swirl Head indentification Help

i found this Olds Head in my Shop , i have only 1 these Heads

anyone know what Year , what Cubic Inch Olds Engine this fits ??

is this any sort of a rare Head ??

Image
Meaux Racing Heads
MaxRace Software
PipeMax and ET_Analyst for DragRacers
http://www.maxracesoftware.com
http://www.maxracesoftwares.com/forum/index.php
PipeMax v4.00  http://www.maxracesoftwares.com/forum/v ... f=14&t=263

maxracesoftware
Guru
Guru
Posts: 2672
Joined: Sat Feb 14, 2004 4:04 pm
Location: Abbeville, LA
Contact:

Re: Oldsmobile Hi-Swirl Head indentification Help

Post by maxracesoftware » Thu Apr 12, 2018 12:36 am

Image
Meaux Racing Heads
MaxRace Software
PipeMax and ET_Analyst for DragRacers
http://www.maxracesoftware.com
http://www.maxracesoftwares.com/forum/index.php
PipeMax v4.00  http://www.maxracesoftwares.com/forum/v ... f=14&t=263

maxracesoftware
Guru
Guru
Posts: 2672
Joined: Sat Feb 14, 2004 4:04 pm
Location: Abbeville, LA
Contact:

Re: Oldsmobile Hi-Swirl Head indentification Help

Post by maxracesoftware » Thu Apr 12, 2018 12:37 am

Image
Meaux Racing Heads
MaxRace Software
PipeMax and ET_Analyst for DragRacers
http://www.maxracesoftware.com
http://www.maxracesoftwares.com/forum/index.php
PipeMax v4.00  http://www.maxracesoftwares.com/forum/v ... f=14&t=263

maxracesoftware
Guru
Guru
Posts: 2672
Joined: Sat Feb 14, 2004 4:04 pm
Location: Abbeville, LA
Contact:

Re: Oldsmobile Hi-Swirl Head indentification Help

Post by maxracesoftware » Thu Apr 12, 2018 12:37 am

Image
Meaux Racing Heads
MaxRace Software
PipeMax and ET_Analyst for DragRacers
http://www.maxracesoftware.com
http://www.maxracesoftwares.com/forum/index.php
PipeMax v4.00  http://www.maxracesoftwares.com/forum/v ... f=14&t=263

maxracesoftware
Guru
Guru
Posts: 2672
Joined: Sat Feb 14, 2004 4:04 pm
Location: Abbeville, LA
Contact:

Re: Oldsmobile Hi-Swirl Head indentification Help

Post by maxracesoftware » Thu Apr 12, 2018 12:37 am

Image
Meaux Racing Heads
MaxRace Software
PipeMax and ET_Analyst for DragRacers
http://www.maxracesoftware.com
http://www.maxracesoftwares.com/forum/index.php
PipeMax v4.00  http://www.maxracesoftwares.com/forum/v ... f=14&t=263

maxracesoftware
Guru
Guru
Posts: 2672
Joined: Sat Feb 14, 2004 4:04 pm
Location: Abbeville, LA
Contact:

Re: Oldsmobile Hi-Swirl Head indentification Help

Post by maxracesoftware » Thu Apr 12, 2018 12:38 am

Image
Meaux Racing Heads
MaxRace Software
PipeMax and ET_Analyst for DragRacers
http://www.maxracesoftware.com
http://www.maxracesoftwares.com/forum/index.php
PipeMax v4.00  http://www.maxracesoftwares.com/forum/v ... f=14&t=263

User avatar
Stan Weiss
Guru
Guru
Posts: 3682
Joined: Tue Feb 20, 2007 1:31 pm
Location: Philadelphia, PA
Contact:

Re: Oldsmobile Hi-Swirl Head indentification Help

Post by Stan Weiss » Thu Apr 12, 2018 12:54 am

Larry,
I believe the 7A heads were used on 350 ci engines. Is the valve size 1.875 and 1.562?

Stan
Stan Weiss / World Wide Enterprises
Offering Performance Software Since 1987
Do you use engine simulation software that uses cylinder head flow files?
We have a package of more than 3000 DFW or FLW Files

DrillDawg
Expert
Expert
Posts: 980
Joined: Tue Jul 06, 2010 11:03 am

Re: Oldsmobile Hi-Swirl Head indentification Help

Post by DrillDawg » Thu Apr 12, 2018 1:40 am

Late 80's 307 swirl port head ,junk, the better 7a head has the "a" smaller than the 7.
BORN RIGHT THE FIRST TIME

maxracesoftware
Guru
Guru
Posts: 2672
Joined: Sat Feb 14, 2004 4:04 pm
Location: Abbeville, LA
Contact:

Re: Oldsmobile Hi-Swirl Head indentification Help

Post by maxracesoftware » Thu Apr 12, 2018 2:00 am

by Stan Weiss » Wed Apr 11, 2018 11:54 pm
Larry,
I believe the 7A heads were used on 350 ci engines. Is the valve size 1.875 and 1.562?

Stan
DrillDawg wrote:
Thu Apr 12, 2018 1:40 am
Late 80's 307 swirl port head ,junk, the better 7a head has the "a" smaller than the 7.
thanks Stan and DrillDawg for that Info ,

i'll just get rid of that Head ,
i have no idea how it got in my Shop anyways :)
Meaux Racing Heads
MaxRace Software
PipeMax and ET_Analyst for DragRacers
http://www.maxracesoftware.com
http://www.maxracesoftwares.com/forum/index.php
PipeMax v4.00  http://www.maxracesoftwares.com/forum/v ... f=14&t=263

mag2555
Guru
Guru
Posts: 2469
Joined: Sun Sep 18, 2011 11:31 am

Re: Oldsmobile Hi-Swirl Head indentification Help

Post by mag2555 » Thu Apr 12, 2018 6:24 am

Late 1985 casting , so it likely went out the door on a 1986 motor.

Rick Finsta
Pro
Pro
Posts: 363
Joined: Sat Sep 13, 2014 10:22 am

Re: Oldsmobile Hi-Swirl Head indentification Help

Post by Rick Finsta » Thu Apr 12, 2018 7:29 am

DrillDawg wrote:
Thu Apr 12, 2018 1:40 am
Late 80's 307 swirl port head ,junk, the better 7a head has the "a" smaller than the 7.
That is definitely a 307 head, but as an FYI, there were 5A, 6A, and 7A heads that were cast for late 60s / early 70s 350s with the A the same size as the number. I have a set of the oddball 5A heads on mine that were cast in a different foundry or something. Both the main number and the casting number pad have the "A" suffix.

Image

I don't have a picture of the casting number pad between the center exhaust ports handy.

User avatar
Alan Roehrich
Guru
Guru
Posts: 3027
Joined: Tue Jul 04, 2006 5:58 pm
Location: Murfreesboro TN
Contact:

Re: Oldsmobile Hi-Swirl Head indentification Help

Post by Alan Roehrich » Thu Apr 12, 2018 7:30 am

Something similar in concept to the Chevy heads with that basic design.

There are a few people running the late roller cam 307 in Stock Eliminator, think 86, 87, and 88 Cutlass. Might be how you came to have one, Larry.

travis
Pro
Pro
Posts: 456
Joined: Sun Mar 15, 2009 5:31 am

Re: Oldsmobile Hi-Swirl Head indentification Help

Post by travis » Thu Apr 12, 2018 9:02 am

DrillDawg wrote:
Thu Apr 12, 2018 1:40 am
Late 80's 307 swirl port head ,junk, the better 7a head has the "a" smaller than the 7.
Junk for a performance application, but they worked exceptionally well for what they were designed for. In a mid 80’s olds 88, 2.41’s and a 200R4 trans (!), 22mpg at 80 mph...best long distance road trip car ever! Just keep the EGR passages clean!

DrillDawg
Expert
Expert
Posts: 980
Joined: Tue Jul 06, 2010 11:03 am

Re: Oldsmobile Hi-Swirl Head indentification Help

Post by DrillDawg » Thu Apr 12, 2018 9:18 pm

travis wrote:
Thu Apr 12, 2018 9:02 am
DrillDawg wrote:
Thu Apr 12, 2018 1:40 am
Late 80's 307 swirl port head ,junk, the better 7a head has the "a" smaller than the 7.
Junk for a performance application, but they worked exceptionally well for what they were designed for. In a mid 80’s olds 88, 2.41’s and a 200R4 trans (!), 22mpg at 80 mph...best long distance road trip car ever! Just keep the EGR passages clean!
Even if it was given to you, It's not worth the money to ship to you for use as a good boat anchor. JK.
BORN RIGHT THE FIRST TIME

Rick Finsta
Pro
Pro
Posts: 363
Joined: Sat Sep 13, 2014 10:22 am

Re: Oldsmobile Hi-Swirl Head indentification Help

Post by Rick Finsta » Fri Apr 13, 2018 9:54 am

travis wrote:
Thu Apr 12, 2018 9:02 am
DrillDawg wrote:
Thu Apr 12, 2018 1:40 am
Late 80's 307 swirl port head ,junk, the better 7a head has the "a" smaller than the 7.
Junk for a performance application, but they worked exceptionally well for what they were designed for. In a mid 80’s olds 88, 2.41’s and a 200R4 trans (!), 22mpg at 80 mph...best long distance road trip car ever! Just keep the EGR passages clean!
Yes! I got 22-25mpg highway with my '84 Delta 88 Royale Brougham and the computerized carb. Add a 25 gallon tank and you can really reach out!

Post Reply