i have a question has any one ever heard of a 327 with 350 casting numbers i am pretty sure this is out a 1967 or 1968 camaro it is a 327 with large journals if any one know any more could u please help thanks

 

Not uncommon at all. There are about 3 different block castings where each was used for the 302, 327, and 350. All 3 displacements are 4" bore engines. Chevy Small Block Engine Casting Codes

 

I under stand what ur are saying camaro but my engine casting number is 3970010 but the engine is a 327 what i was asking is how rare is it to have a 327 with 350 casting numbers i know it is a 327 i put a 350 crank in it and the stroke was a 1/4 inch off. I HAVE BEEN TOLD BY A FEW PEOPLE THAT THIS BLOCK IT WORTH A PRETTY BIG CHUNK OF CHANGE IM TRYING TO MAKE SURE WHAT I HAVE BEFORE I GO ANY FURTH I WOULD LIKE TO SELL IT WHEN IM DONE BUT I WANT TO KNOW ALL I CAN ABOUT IT BEFORE I SELL IT

 

I don't see what would make that block worth a big chunk of change. 3970010 is a very common casting that was used from 1969 through 1980. The majority of sources show it as a 302 block for 69, and a 350 block for 69-80. I found a couple that said that casting was also used for the 327, but I'm not too confident about that. What you easily could have had is what started out as a 350, but someone put large journal 327 innards in the block to make it a 327. Look up the suffix code on the front pad if it's still there, that'll tell you what engine application it was originally built as.

 

67/68 302 should be marked MO
69 302 would be marked DZ............hope this helps. These were my favorites, last one was 66,000 mile all original RS 302 MO, rally green, what a WAR HORSE.
Good luck hope this helps.
David

 

I WILL FIND THE suffix code BUT IN THE MEAN TIME I WOULD LIKE TO ASK SOMETHING ELES MY ENGINE HAS 327 DECK HEITH AND IT HAS THE STROKE OF ONE TOO I AM ALMOST POSITIVE IT IS A 327 I WAS TOLD WHEN I GOT THE TRUCK I WAS TOLD THAT IT WAS OUT OF A 1967 CORVETTE IM NOT TO SURE THAT IT IS OUT OF A VETTE BECAUSE THE JOURNALS ON THE VETTES WHERE SMALL FOR HIGH REVS BUT THE GENTALMEN AT THE AUTO PARTS STORE SAID HE THINKS IT WAS OUT OF A 67 OR 68 CAMARO CAUSE OF THE JOURNAL SIZE WITH OUT THE SUFFIX CODE IS THERE ANY WAY TO KNOW? I INHERITED THIS TRUCK FROM FROM MY LATE GRANDFATHER IT NEEDED OVERHAULD AND HE NEVER GOT TO IT SO IM JUST WINGIN IT IM NOT THE BEST AT THIS STUFF BUT THANK U FOR UR HELP GUYS

 

If it was out of a 67 Vette, then someone transplanted it there once upon a time. The 3970010 is a 1969 and up casting. You can take a 350, empty it out, and put in a rotating assembly from a 68 and up 327, and have yourself a 327 short block just like GM made. If you go to that link I gave you earlier, you can see that there are a handful of different block castings that GM used for both the 327 and 350, just not your casting. Your engine wouldn't have been the first one where a previous owner turned a 350 into a 327, some like the higher revs of the shorter stroke better. What you have likely isn't rare, unless it's a DZ 302 (69 Z/28) block. Otherwise it's a 350 block, and the suffix code will tell what it came out of.

 

this is what the block says on the deck lid 190225430 v0509FC or it might be a FO not sure how to read all that so can some one help me out thanks

 

do you know why it is when i put the crank of a 350 in it do my pistons stick up a 1/4 of an in over the deck but with the 327 it sits flush is the 327 have differant rod length than the 350?

 

Guess that settles that. Contrary to popular databases, they did use that casting # for the 327 as well.
v0509FC decodes as: V-Flint engine plant. 0509-assembled May 9th. FC-1969 327, 235 hp, connected to a TH350 trans.
There isn't an FO code.
Your pistons are sticking up 1/4" more because the 350 has a 1/4" longer stroke. The 327 and 350 rods are the same 5.7" length, but the wrist pin locations are different.
The pin holes on the 350 pistons are closer to the top, which drops them back down into the cylinder.