Go Back   The Ford Barn > The Archives > Early V8

Sponsored Links (Register now to hide all advertisements)

 
 
Thread Tools Display Modes
Old 03-23-2005, 12:52 PM   #1
Guest
 
Posts: n/a
Default Re: "A" heads on 59AB block







Grind the 59 off the 59AB heads and use them. The later heads have improved cooling besides better compression.





 
Old 03-23-2005, 03:24 PM   #2
Guest
 
Posts: n/a
Default "A" heads on 59AB block;compression?







59 heads were made for 239 cu in ,the A (81A)type heads were on 221 cu in engine,Like Ron said may even be higher compression than 59 type on that engine.Check clearance on piston top &cut heads so final with compressed gasket is near .050 clearance... Check CC volume of each head and let us know which has the most volume ..





 
Sponsored Links (Register now to hide all advertisements)
Old 03-23-2005, 03:24 PM   #3
Guest
 
Posts: n/a
Default "A" heads on 59AB block;compression?







59 heads were made for 239 cu in ,the A (81A)type heads were on 221 cu in engine,Like Ron said may even be higher compression than 59 type on that engine.Check clearance on piston top &cut heads so final with compressed gasket is near .050 clearance... Check CC volume of each head and let us know which has the most volume ..





 
Old 03-24-2005, 10:53 AM   #4
Guest
 
Posts: n/a
Default Re: "A" heads on 59AB block;compression







Ford specs from Service Bulletin dated 9-17-1947:

59A-6050-A, 77-79CC

59A-6050-B,73.5-75.5

iron 81A-(the "A" head) 77-79

8BA&8RT, 73-75



Reality may differ...

The real high compression heads were the 81S and 91S Denver heads--I think the 81 is about 60.





 
Old 03-24-2005, 10:59 AM   #5
Guest
 
Posts: n/a
Default Re: "A" heads on 59AB block;compression







Also, don't base anything on these numbers--there are internal inconsistencies in the list, and of course production tolerances too. Measure.





 
Old 03-24-2005, 12:40 PM   #6
Guest
 
Posts: n/a
Default Re: "A" heads on 59AB block;compression







The right hand 81A head (6049 )is 2 cc's less than the left head (6050) "in theory".This was due to the different valve angle from the two sides. Haven't checked the head volume, however they are difinately not the same.

Thanks

Floyd





 
Old 03-25-2005, 03:08 AM   #7
Guest
 
Posts: n/a
Default Re: "A" heads on 59AB block;compression







How do you check the CC volume? I can compare by installing a 59 on one side and a 81A on the other. Perhaps, since I have the compression numbers with the 59, I can compare.





 
 

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

Sponsored Links (Register now to hide all advertisements)


All times are GMT -5. The time now is 03:15 PM.