engine casting #'s

[Way_Fast_Whitey]

I found these blocks and wanted to make sure they are 350's. Could someone please help.

The first is 3970010.
The Moretec site says it could be a 302, 327 or 350. I found it in a late 70's truck.

The second is 387004.
I couldn't find any info on this one.

Thanks for the help.

Bubba

[Van B]

3970010 350 from 69,70,71,72 Corvette, 302 from Camaro, 350 from 69-79 truck, 69-79 passenger car, Chevelle Camaro, Nova, Monte Carlo

387004 does not seem like enough numbers.

[Way_Fast_Whitey]

Thanks for the info on the first one.

I looked pretty good and I think that was all of the numbers on the second one. It is in a old GMC van. Later 70's type.

[pdq67]

Post the letters that are at the end of the VIN number string that is usually on the little deck pad that's right above the pass. side top w/p bolt and they decode to almost everything IF it is a virgin!!

Year, vehicle, engine size and hp, tranny, carb., air pump, etc.....

pdq67

[Adam's 55 Chevy]

That casting number is probably the most common. It has a 4" bore for the 302, 327 & 350. If you want to build a 350 from it make sure the bottom of the block has clearance for the 350 stroke. If it is a full short block the shape of the raer of the crank will tell you what it is. Or measure the stroke of the piston.