I believe this is a 1967 327 but I can't find 'YW' anywhere? Anyone know the details of this from these numbers? Thanks, John
keep cleanign the back of the block, find the casting date code, should be a letter followed by two to four numbers, such as D 25 7 or something. 1966-68 50-60 series truck 327
Casting number 3892657 was used for 1964-67 302/327/350 car and truck, 2 bolt mains, according to the SBC casting book.
Generally the suffix will denote what kind of vehicle it came from and what transmission the motor was mated to. Example: "YW" for big truck, manual trans and "YV" for big truck, auto trans. Sent from my SM-G900V using The H.A.M.B. mobile app
Yeah, generally. This is from the 1969 Chevy truck parts book. this is the second page of the listing for 1967.
That truck engine has forged dished pistons. They are all identical. One bank the notch on the piston goes toward the front of the block. The opposite bank has the piston notch toward the rear of the block. Put on open chamber big valve head's , thick head gasket's and a better camshaft & it might be a good blower engine?
The only problem with that size of engine in that size of truck is all too often the guy (s) driving it hammered the hell out of it or lugged the hell out of it. As far as block and crank go, they are a good start to build a nice 327 on if they are in good shape.
Almost all of those trucks had the small base Rochester 2 bbl carb and a governor on them. They had a big heavy flywheel about 86 pounds. and a milder camshaft than the car engines. and usually small valve heads.
on the farm you had to drive them hammered to the wall , they had no torque like the big blocks or the 292 or 302 straight 6's or big 305 v-6s did . they drank gas and just made noise ...
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