What is the difference between a 8BA and a 8RT flathead V8 - Ford Truck Enthusiasts Forums



1948 - 1956 F1, F100 & Larger F-Series Trucks Discuss the Fat Fendered and Classic Ford Trucks

What is the difference between a 8BA and a 8RT flathead V8

Reply
 
 
 
Thread Tools Search this Thread
  #1  
Old 02-13-2018, 07:48 PM
50trucking's Avatar
50trucking 50trucking is offline
Junior User
Thread Starter
 
Join Date: Jun 2014
Posts: 52
50trucking is starting off with a positive reputation.
What is the difference between a 8BA and a 8RT flathead V8

I have a 8RT that has just been rebuilt in a 1952 Ford F1 and found that the block is cracked at the top of the valley, behind # 1 valve springs level with the valve guides. I didn't discover the crack until I put water in the radiator in preparation to crank it and noticed water in the oil.

I guess I will have to find another block.
Can anyone tell me what blocks will work with my 8RT? A 8BA looks the same but I am not sure. What are the years I can use and what are the differences?
Reply With Quote
  #2  
Old 02-13-2018, 07:52 PM
ALBUQ F-1's Avatar
ALBUQ F-1 ALBUQ F-1 is online now
postin' fool
 
Join Date: Jul 2004
Location: NM
Posts: 23,103
ALBUQ F-1 has a superb reputationALBUQ F-1 has a superb reputationALBUQ F-1 has a superb reputationALBUQ F-1 has a superb reputationALBUQ F-1 has a superb reputationALBUQ F-1 has a superb reputationALBUQ F-1 has a superb reputationALBUQ F-1 has a superb reputationALBUQ F-1 has a superb reputationALBUQ F-1 has a superb reputationALBUQ F-1 has a superb reputation
Any flat V8 from '48 to '53 will work, but you want to stick with engines that use the wide belts. Car engines after (I believe) '51 used narrow belts. You can use the block from a Car engine, just swap the pulley and water pumps from your old engine.

One caveat; Cars in '48 still used the older style V8, you don't want that. Trucks got the newer 8BA-style engines first (in '48), then in '49 all used the newer style engine.
Reply With Quote
  #3  
Old 02-13-2018, 07:56 PM
Flat Ernie Flat Ernie is offline
Senior User
 
Join Date: Jul 2003
Location: FL
Posts: 313
Flat Ernie is gaining momentum as a positive member of FTE.
Quote:
Originally Posted by 50trucking View Post
I have a 8RT that has just been rebuilt in a 1952 Ford F1 and found that the block is cracked at the top of the valley, behind # 1 valve springs level with the valve guides. I didn't discover the crack until I put water in the radiator in preparation to crank it and noticed water in the oil.

I guess I will have to find another block.
Can anyone tell me what blocks will work with my 8RT? A 8BA looks the same but I am not sure. What are the years I can use and what are the differences?
I'm pretty sure your 8RT has some of the lowest compression heads. If you find an 8BA, use it.

Pulleys, water pumps, and fans/generators can generally be swapped to address the belt issue(s).
Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
T170 bellhousing EAC 1947 and Older Ford Trucks 1 12-20-2017 11:09 PM
Engine Identification 1950 F1 yosemite98 1948 - 1956 F1, F100 & Larger F-Series Trucks 8 05-03-2017 10:25 AM
8RT / 8BA heads Ian-1949/F47-1949 Flathead V8 & Flathead 6 5 07-10-2016 08:55 PM
Need Engine Advice bluedog7208 1948 - 1956 F1, F100 & Larger F-Series Trucks 6 06-08-2016 07:32 AM
Various years flathead 239 compatibility farmall_7 1948 - 1956 F1, F100 & Larger F-Series Trucks 15 05-08-2016 07:12 PM


Go Back   Ford Truck Enthusiasts Forums >

Thread Tools Search this Thread
Search this Thread:

Advanced Search

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
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Forum Jump


All times are GMT -5. The time now is 07:32 PM.


We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.