• Welcome to For E Bodies Only !

    We are a community of Plymouth Cuda and Dodge Challenger owners. Join now! Its Free!

How can you tell the difference between K Frames

72 blooice

Member
Joined
Mar 17, 2015
Messages
9
Reaction score
3
Location
Pittsburgh Pa
I have a K frame that I believe came out of 73 challenger. I'm not sure if it was a big block or small block engine. Can someone tell me the difference between the two. Or are they the same small and big block? I can't find any numbers on it. I have had this over 40 years. Any help would be appreciated . Thanks Jim

20211005_124711.jpg


20211005_124741.jpg


20211005_124759.jpg


20211005_124801.jpg


20211005_124814.jpg


20211005_124801.jpg


20211005_124810.jpg
 

70chall440

Well-Known Member
Joined
Dec 11, 2010
Messages
1,260
Reaction score
975
Location
Western Washington
I do not believe there was a difference between BB and SB K frame in 73 but I could be wrong. I know in earlier K frame there was a disc tack welded to the front of the K frame with 2 numbers on it which indicated which engine it was designed to accept (although generally there were all the same except for the Hemi and /6 frames and the 6 pack K frames had a skid plate, well at least some did).

I suspect there is a number on there somewhere, not sure where it would be though. Bottom line is that you can put a BB or SB onto that K frame.
 

ted s

Well-Known Member
Joined
Sep 8, 2021
Messages
179
Reaction score
65
Location
ny
well there where no big block e bodies after 71.
 

moparroy

Well-Known Member
Joined
Dec 25, 2020
Messages
125
Reaction score
61
Location
Rockwood, Ontario
A somewhat related question - not meaning to hijack...
As far as I know this is the original K for my '74 Cuda 360 - it was installed with the matching eng and trans ...
It has these weird brackets that stick up in front of the motor mounts - I have had reactions "never seen that before" - seen very few pictures showing the like on line - I did at one point find a reference that said "some" '74 K's had this (if I remember the quote) - but not explanation
Any ideas?
 

Attachments

  • 100_0423.JPG
    100_0423.JPG
    120.8 KB · Views: 185

AUSTA

Well-Known Member
Joined
Apr 16, 2015
Messages
937
Reaction score
501
Location
PERTH WA
If you wire brush the front middle of the frame it will have a manufacture date code lightly stamped also the disc type tag will tell you the engine type
 

tonysrt

Well-Known Member
Joined
Mar 12, 2017
Messages
560
Reaction score
152
In 73 I believe they started with the spool mounts, so that K frame maybe 72 with the 2 piece mounts.
 

moparroy

Well-Known Member
Joined
Dec 25, 2020
Messages
125
Reaction score
61
Location
Rockwood, Ontario
I remember my '73 Satellite had spool mounts on a 318 - but were they ever used on e-bodies? Parts I looked up for my '74 only showed sandwich type
 

Chryco Psycho

Well-Known Member
Joined
Dec 28, 2008
Messages
4,402
Reaction score
2,043
Location
Panama
Spool mounts were never used in E bodies nor was the 9 1/4 diff , A & B bodies changed after 72
 

brotow

Well-Known Member
Joined
Oct 16, 2017
Messages
102
Reaction score
31
Location
L.I. N.Y.
This what
i believe is the original k frame from a 1974 Challenger 360 auto.
i had. I think the two extra brackets are factory and for restricting engine movement (torque)
 

Attachments

  • 20180817_150714.jpg
    20180817_150714.jpg
    1.4 MB · Views: 158
  • 20180817_150648.jpg
    20180817_150648.jpg
    2.6 MB · Views: 173

moparroy

Well-Known Member
Joined
Dec 25, 2020
Messages
125
Reaction score
61
Location
Rockwood, Ontario
Thanks - I wondered if it might be something about torque movement - might extend motor mount life - not sure it would protect against failure. Might get a better idea once I get the motor onto the K frame next year
 
Back
Top