64 Engine Casting #

[PIPER-68]

DOES ANYONE KNOW IF THIS IS THE RIGHT CASTING # (3782870)
FOR A 64 327/ 365HP ENGINE ? IT ALSO HAS FOIIOS OR COUD BE F0110S ON THE FRONT RIGHT PAD . I AM TRYING TO PUT ENOUGH CORRECT PARTS TOGETHER TO BUILD A 327 / 365 HP FOR MY 64 . I WAS TOLD ALL I HAD TO DO IS CHANGE THE TACH TO A 6500 RPM REDLINE AND THE OIL PRESSURE GAGE TO A 80 LBS MODEL. IS THIS CORRECT INFORMATION ? WHAT OTHER PART # OR CASTING # DO I NEED FOR THE HEADS AND INTAKE TO MAKE IT CORRECT ? MY CAR WAS MADE IN JUNE AND I AM PLANNING ON DOING THE CORRECT RESTAMP ON THE BLOCK OR A COMPLETE RESTORATION.
THANKS , CHAD....

 

[midyear]

3782870is a correct block for 64 corvettes, make sure casting date is prior to your cars build date. heads would be 3782461. looking at your cars date of june, and the block stamp pad saying jan, it looks like this block is a tad early for your car, but check the cast date just to be sure.

 

[PIPER-68]

DOES IT MAKE ANY DIFFERANCE IF THE BLOCK WAS A 300HP OR 250HP OR DOES IT MATTER ? I 'AM BUILDING A 365 HP.
THANKS FOR THE HELP. CHAD......

 

[PIPER-68]

ALSO DO YOU KNOW WHAT THE F STANDS FOR ON THE PAD STAMPING ? AND WAS F0II0S THE ORIGINAL CARS VIN FOR THAT ENGINE ?
THANKS AGAIN.

 

[Tom Bryant]

Hi Chad,

3782870 was used for all 1962-1964 and most 1965 Corvette 327 engines. It's a Flint engine (F) so that's good for a Corvette and appears to be a Jan 10 build. (F0110S) Not sure about the S suffix but not a Corvette block. You need to get the casting date off of the right side of the bellhousing flange oppisite of where you found the casting number. That will tell you when the block was cast. NCRS allows a engine cast up to 6 months before the build date of the car. Around 2-4 weeks is more common on original cars. If this block is too old or too new you are still looking for a block.

Heads with casting number 3782461 were used on all '64 optional engines and should have casting dates within a couple weeks of the block although valve covers aren't removed for judging. These dates can be farther apart due to many reasons.

Intake manifold 3844461 in cast aluminum was used on the 365 horse engine. You will also need a Holley 4150 Mfg# 2818A. The numbers and the date codes are on the front of the choke housing. There is also a special open back air cleaner that was used on the 365 engine in 1964 and 1965 and also the 1965 350 horse 327. I think that there were also different oil fill tubes on the intake and other items specific to the high horse 327s besides just the tach and oil pressure guage.

It would be a good idea to look at a real example and take notes and pictures. Good luck in your quest.


Tom

 

[JohnZ]

F0110S = Flint Engine Plant, January 10th, '62-'64 327/250hp Powerglide from a full-size car. The 870 block was used for all '64 Corvettes regardless of horsepower, but all the other parts were unique to the 365hp - heads, intake, carb, cam & lifters, rods, pistons, balancer; cranks were all the same (forged).

 

[Tom Bryant]

One other thing when looking for 3782461 heads. They were available in both 1.94 and 2.02 intake valve sizes, depending on use. You need the 2.02 valve sizes. When looking in the combustion chamber the 2.02 heads look as if you can't slide a piece of paper between the valve heads. Almost look like they touch each other. The 1.94 heads have a slight gap between the valve heads.

 

[SolidLifters]

John, I wasn't aware that the SHP small blocks of the early 60's had different rods from the std. engines. I thought that the late 60's engines were the first to receive unique rods?????????

 

[PIPER-68]

SOLIDLIFTERS CAN YOU VERIFY THAT ABOUT THE RODS AND ALSO DO I NEED A DIFFERENT CRANKSHAFT OR WILL THE ONE OUT OF THE 250 HP BE THE SAME .
THANKS, CHAD.........

 

[JohnZ]

John, I wasn't aware that the SHP small blocks of the early 60's had different rods from the std. engines. I thought that the late 60's engines were the first to receive unique rods?????????

The so-called "second design" rod was used from '62-'67 for all 327 applications except High Performance; those applications (and all Corvettes) used the so-called "third design" rod with a heavier beam and more meat around the head of the rod bolt; all were small-journal and used the 11/32" rod bolt. In '68 they went to the large journal and 3/8" bolt.

 

[SolidLifters]

Chad, as far as I know, all the 327 cranks from the early 60's were forged and all the same.

John, I'm confused by the rods still. In the first post, if I read it correctly, you're saying that the SHP engines had different rods, but the later post seems to say that all Corvettes got the better rods.

 

[midyear]

John, are you talking about the "green rods"?

 

[Tom Bryant]

John can correct me if I'm wrong but the 2nd design rod was std in 327s and replaced the original design rod in 283s also, beginning in 62. The 3rd design rod was the one with more meat on the big end and was used in the 327 SHP engines. We used to call it the 327 hi-po rod. The extra material around the big end gives it a somewhat squarish look from the side. With the std rod and the hi-po laying side by side it is very easy to tell which is which.

 

[JohnZ]

Chad, as far as I know, all the 327 cranks from the early 60's were forged and all the same.

John, I'm confused by the rods still. In the first post, if I read it correctly, you're saying that the SHP engines had different rods, but the later post seems to say that all Corvettes got the better rods.

All '62-'67 327 Corvette engines got the "third design" rod, but same-year passenger cars only got that rod with SHP engines.