HOME FORUM RULES CONTACT
     
   
   

Go Back   CLASS RACER FORUM > Class Racer Forums > Stock and Super Stock Tech


Reply
 
Thread Tools Display Modes
Old 01-10-2017, 07:13 PM   #1
1969A56
Junior Member
 
Join Date: Feb 2012
Location: High Bridge NJ
Posts: 7
Likes: 0
Liked 0 Times in 0 Posts
Default STR 12 Cross ram info

Does anyone have or know where I can find indepth information on an STR 12 cross ram for a 340 mopar? I have an unused Edelbrock STR 12 but can't seem to locate any constructive info. on carbs used, problems etc. I've read about the ones used on the Z-28, but this group at Class Racer seems to have tried everything.
1969A56 is offline   Reply With Quote
Old 01-11-2017, 07:37 PM   #2
Myron Piatek
VIP Member
 
Join Date: Nov 2001
Location: Florida
Posts: 1,588
Likes: 34
Liked 133 Times in 49 Posts
Post Re: STR 12 Cross ram info

There was a magazine article (forgot which one) back in the early '70's that did, I believe, a 2 part build/test on a 340 4-speed Demon. They would add a part, & run it at a track. The STR 12 was part of the test and may have included 2 different carbs. Possibly jetting. I have the magazine, but it's been a while since I've read it and don't know where it is.


Maybe someone remembers the magazine, article and has a source for it.


Google "Edelbrock STR 12". Many discussions, but don't know if there is any hard core testing on them.
__________________
LOCOMOTION Racing
Myron Piatek is offline   Reply With Quote
Old 01-11-2017, 08:19 PM   #3
1969A56
Junior Member
 
Join Date: Feb 2012
Location: High Bridge NJ
Posts: 7
Likes: 0
Liked 0 Times in 0 Posts
Default Re: STR 12 Cross ram info

Thank you, Ive googled till I'm googled out. Mostly opinions on STR 12, I'll keep looking. The article on the Z-28 was very informative about cams, rear gears etc. The author did state that he put a spacer between the plates but that the thickness of said plate was top secret. lol
1969A56 is offline   Reply With Quote
Old 01-12-2017, 11:01 AM   #4
340Cuda
VIP Member
 
Join Date: Apr 2003
Location: Tulsa, Oklahoma
Posts: 1,565
Likes: 3,120
Liked 676 Times in 289 Posts
Default Re: STR 12 Cross ram info

If you have access to the old Chrysler Tune Up Tips and books of the day I think there is some information there.

I know there is a brief mention in one of Larry Shepard's books about them that show where some dams need to be installed to help with fuel distribution.

Good Luck,
Bill
340Cuda is offline   Reply With Quote
Old 01-12-2017, 09:27 PM   #5
1969A56
Junior Member
 
Join Date: Feb 2012
Location: High Bridge NJ
Posts: 7
Likes: 0
Liked 0 Times in 0 Posts
Default Re: STR 12 Cross ram info

Thank you Bill, I just looked him up and he's still wrenching out of Akron. I appreciate that info.

Last edited by 1969A56; 01-12-2017 at 10:28 PM.
1969A56 is offline   Reply With Quote
Old 01-13-2017, 11:02 AM   #6
340Cuda
VIP Member
 
Join Date: Apr 2003
Location: Tulsa, Oklahoma
Posts: 1,565
Likes: 3,120
Liked 676 Times in 289 Posts
Default Re: STR 12 Cross ram info

Quote:
Originally Posted by 1969A56 View Post
Thank you Bill, I just looked him up and he's still wrenching out of Akron. I appreciate that info.
I think that may be a different Larry Shepard. The one I am talking about is a former Chrysler engineer.

Bill
340Cuda is offline   Reply With Quote
Old 01-14-2017, 10:09 PM   #7
James L Miller
Member
 
Join Date: Apr 2005
Posts: 495
Likes: 6
Liked 24 Times in 15 Posts
Default Re: STR 12 Cross ram info

I seem to remember Hot Rod magazine doing an article on a 340 Duster. John Dianna took it and eventually ran it in Modified Production. Probably did the first article in 1970.
__________________
Mopar 2 Ya!
James L Miller is offline   Reply With Quote
Old 01-15-2017, 03:19 AM   #8
1969A56
Junior Member
 
Join Date: Feb 2012
Location: High Bridge NJ
Posts: 7
Likes: 0
Liked 0 Times in 0 Posts
Default Re: STR 12 Cross ram info

Thanks, I think that was a tunnel ram, but not a cross ram
1969A56 is offline   Reply With Quote
Old 01-21-2017, 08:53 PM   #9
House of Darts
Member
 
Join Date: Mar 2007
Posts: 346
Likes: 19
Liked 20 Times in 15 Posts
Default Re: STR 12 Cross ram info

It was a dual quad. Ran E/MP and D.
House of Darts is offline   Reply With Quote
Old 07-11-2017, 09:04 AM   #10
James L Miller
Member
 
Join Date: Apr 2005
Posts: 495
Likes: 6
Liked 24 Times in 15 Posts
Default Re: STR 12 Cross ram info

As I recall, they tested the STR on the test car before Dianna made a race car out of it. You would have to find the first article. It may have been the June 1970 Hot Rod magazine?

http://www.ebay.com/itm/HOT-ROD-MAGA...item4d241524f1
__________________
Mopar 2 Ya!
James L Miller is offline   Reply With Quote
Reply


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not 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

Forum Jump


All times are GMT -4. The time now is 01:00 PM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright © Class Racer.com. All Rights Reserved. Designated trademarks and brands are the property of their respective owners.