There's a reason I posted the three pads with little info to go by. It's for those that don't know and wonder what?, then do some research on there own. It would be nice to see the rib on the front of the block as well.
Hey thanks for all this good info - it has made me get off my as& and research my block lol .I have a 3914678 block with the long pad at the front (1968 327?)
Early sixties 283 I believe. I think it’s different than the mentioned 512 block. OP bailed! Lol Sent from my iPhone using The H.A.M.B. mobile app
I am not really adding anything new here but I can confirm what has been said above. The motor in my avatar is a 512 casting, dated E 7 5, has the road draft tube, has a 4 1/4 pad with CE prefix. It is a NOS 327/365 service replacement motor my friend bought brand new in 1970. I can’t wait to finish the car and here it run!
Like Jim said measure the bore. If it's a 283 it's less than 4 in. if not then it's a 327. Whats the diff? If it's a 4 inch 283 it's a 283 .125 overbored, which makes it 4 inch. But it will tell you what year it is! 61 or 71. LOL.
Yes. I’ve heard that is a good thing. What is good about the 2 humps? Thanks. Sent from my iPad using The H.A.M.B. mobile app
Apologies. Not sure what a road draft is but here is a better picture of the back of the block. Thanks for the help. Sent from my iPad using The H.A.M.B. mobile app
Apologies gents on the questions. I didn’t turn on my setting to alert me when there are replies. Sent from my iPad using The H.A.M.B. mobile app
They are just an easy visual identifier to denote the engine has the more desirable closed chamber heads. Also often referred to as "Camel hump" or "fuelie" heads, the "fuelie" name coming from the fact that the same or similar casting was used on the factory high performance models. Pretty much every SBC after 1964 up to 1971 that came with more than 290 HP had some form of this style head on it.
Road draft tube image in post #10 of this thread. https://www.jalopyjournal.com/forum/threads/327-question.1046434/ You block has the correct area cast for it, but can't see it good enough to tell if it is machined open...doesn't look like it is. Flat pad behind and to the driverside of the distributor location, above and to tje driverside of the center bellhousing bolt location. Your block has mild rarity interest, don't expect anyone to come to you and pay some premium price just to get one like it, it's not that valuable.
Doesn't look like it is finish drilled into the lifter valley, correct?? Just a blind machined boss is all??
That is how mine looks too. 68 replacement block (or short block). Has road draft tube drilled out and plugged. Small journal steel crank, large ID tag, no webbing on front, spin on filter adapter. The double hump heads are excellent. Check casting numbers on those too, last 3 digits.
According to Mortec.com, it is a 327: https://www.mortec.com/castnum.htm Search for casting number 3959512
I have one similar. It's dated 73 and has the vent hole in the back . Also it's definitely a small journal 327 . Got 2 spun rod brgs and 2 broken high comp pistons. Stamped CE on the pad. Must be the last of the 327's .
I never knew or would believe that there is a small journal SBC with a "casting date" after 1967. It does not make sense to me that they cast sj to sell over the counter or as CE blocks. I still don't believe it but I would have to see one apart and miked up with a recognizable casting date to become a believer. Pat
From what I've been told by several people, (which could be ALL Bullshit), is that the OE's are required to supply direct replacement parts for a certain amount of time. (7 years, I think) I'm not certain what the "rule" was back then, but if there is any truth to what I've been told, this block would fall into that category.Again, this is only what I've been told by other's and I don't know if it will hold up in court...
The Jalopy Journal
