[dustinweaver]

i have a 1969-1986 chevy chevy 302 327 or 350 with power pack heads ans block number 3970010 can anyone please tell me what size engine it is and what the stock compression of it is

[dustinweaver]

the vin number on the engine has a factory code "v" which i think means from flint michigan, isnt flit the only place they made vette motors??

[onovakind67]

Those motors generally had from 8.5:1 to 11:1, depending on the application.

[Hippie]

Only 283's and '62-'64 250HP 327's came stock with "Power Pak" heads. The 327's were factory rated at 10.5 to 1. The chambers on Power Pak heads ranged from 54 to 60cc.

Get the casting number off the heads and the letter code off the pad on the front of the block on the passenger side. Should be a 3 letter code. That will tell you what you have.

[95th67cam]

At one time i was told the 010 block was a 350 4 bolt block. I later ound out that the 010 block was 4" bore block. Most likely from a 350 but could be a 2 bolt main motor.. The 327's were 4" bore but I don't think they had the 010 block. I think you could find the 010 block in just about anything that had a 350. cars or trucks. I had a 79 z/28 that had a 010 block but my 80 corvette with a 350 did not have that casting.? The power pack heads would bolt to anything. Small valves. good heads for a mild 327 or 283. I think they came out in 57. I had a set on a factory 67 283 2 barrel. I would imagine the compression on a 350 would be very high, too high probably with flat top pistons.

[docvette]

Originally Posted by dustinweaver

the vin number on the engine has a factory code "v" which i think means from flint michigan, isnt flit the only place they made vette motors??

Doc here,

Early Corvettes were produced in St.Luis..(52-82) The later Corvettes 82 - present are from Bowlingreen Ky.

Your Engine is a 350..

3970010....350...69-80...2 or 4

produced between 1969 and 1980, it had came with both 2 and 4 bolt mains..

As Far as CR is concerned you need to look at the spec's for that year engine and find out which apply to your setup. The Spec Section of any Chilton those years should have it..

Doc