k frame #'s

hi all,
i have a k frame that we think is out of a 70 challenger r/t bb.the oval tag has the upside down # 72 on it.i know it's the last 2 didits of the part # but i can't find a k frame ending in 72.any help would be greatly appreciated,kent

Does it have a skid plate? Probably a mis-stamped 74.

no skid plate but he's pretty sure it is a bb k frame.any other way to tell?thanks

I can't speak to an E body but the 70 B body K frames are the same big to small block. I thought the only differences between B and E was the angle of the steering box mount???

i really don't know.that's why i came to the mopar brain trust

Could it be 52 ?

If so, mid year 318, 340, 340-6 & 383.

my 70 barracuda that was born with a 318 has a 72 tag on the K,hope this helps.

For you guys with the 72, what are the scheduled production dates of your cars?

I checked some early broadcast sheets for 1970 318, 340 & 383 cars & found 12 & 76, so give me a date range & I can did deeper.

Also, if you have your broadcast sheets, what numbers are printed under FRAME on line 4?

it's a 72 for sure.he swears it came from his 70 chally r/t 383 car.i don't know.appreciate all the info.though.this is good stuff,thanks

A '70 E-body V-8 without skid plate would be 3583074.

My '70 U code Challenger R/T, which is a LA plant car with a spd of 4/1 has a 77 on the build sheet.

my car was originally a 318 car built in LA. I've owned the car since 82 but I don't have the build sheet,sorry. I do have the original order sheet from northland dodge and I'm the second owner.
If this is the tag you guy's are referring to.

that's the one i have.thanks for all the info.everyone.

Good morning,
I have an original 70 6 pack Chally. The "Coin" on the front of the"K" member has a 12 stamped on it. I have seen this (12) on several 70/71 BB and SB cars previously. My "K" member has the skid plate however my understanding is that the skid plate was not always installed on 6 pack cars but was for the Hemi cars.
I am fairly new to Mopars so I am always open to correction and learning new information, just wanted to share this.
Hope this helps.

I have a 70 Challenger. Door sticker says 6/70, k member is 52. Was a 318/904.

Forgot to add that my K frame has no coin...Can anyone explain this?????

my 2-70 Hamtramck Cuda has #12 on k-frame. was 383 4-speed now 426 hemi with big block ears and 4-speed.