Earley chevy motor ID

[Mark-Ia]

I had a 4 bolt main in a 69 Impala. Original motor to the car.

 

[Tx Jim]

Chevrolet never made a 4 Bolt main manufactured stock block in a 327!

It's been over 50 yrs since I disassembled the 327 cid engine that came in the '66 pickup I purchased new. I think this was same type engine mainly used in larger trucks & had 4 bolt main caps, 8:1 compression & 4 barrel carburetor

 

[Dean]

Red, some late 60's z 28 Camaro's had 4 Bolt 302's and 350's, maybe a 327 or two, and there may be a 4 bolt 400 passenger car out there somewhere.

Yes. 1969 302s had 4 -bolt mains, and all SHP 350s had 4-bolt mains, but no 327s had 4 bolt mains.

 

[Dean]

Chevrolet never made a 4 Bolt main manufactured stock block in a 327!

Agreed.

My 68 GMC 2500 Series with 4 Bbl 327 had 2-bolt mains.

 

[Dean]

Not all 350s had them. And some other motors did.

Most 350s did not have 4-bolt mains. Only SHP versions did.

 

[JMOR]

OK, folks, let us get to the "EARLY" Chevy V8.....1917.

https://imgur.com/ZvewCJi

https://imgur.com/aeKO69r

 

[Dean]

OK, folks, let us get to the "EARLY" Chevy V8.....1917.

https://imgur.com/ZvewCJi

https://imgur.com/aeKO69r

Don't think it had 4-bolt main caps, JMOR.

Wonder if it had main caps?

 

[Dean]

It's a Corvette 327. Everyone knows ALL Chevy small blocks of unknown origin are Corvette 327's. Even if it's a 305, it a Corvette 327.

Love it!

 

[JMOR]

Don't think it had 4-bolt main caps, JMOR.

Wonder if it had main caps?

Maybe with leather inserts?

 

[kencombs]

Every pickup I ever saw with a 350 had 4 bolt mains. 70-72 400's were 4 bolt. I think there were some 327's with 4 bolt.

Yep, Lots of pickup 350s had 4 bolt mains. Used to be sought after for building hot engines. Still are by some.

 

[kencombs]

It's a Corvette 327. Everyone knows ALL Chevy small blocks of unknown origin are Corvette 327's. Even if it's a 305, it a Corvette 327.

It's true! There are way more used Corvette engines that the total built by Chevy.

 

[used red MN]

Don't think it had 4-bolt main caps, JMOR.

Wonder if it had main caps?

Keep you oil can handy, that valve train needs an occasional squirt or two! Chief is going to have to do a mowing job or two so he has so time to mentally sort through all the info above. For what it is worth since the LS engine came about the “mouse motor” moved into 2nd fiddle.

 

[Brown David]

Most 350s did not have 4-bolt mains. Only SHP versions did.

I'm not a Chevy guy, what is "SHP?

WAG, "Super High Performance" maybe?

 

[DoubleO7]

The casting number ending in 010 does not equate to only 350's
And there are many other last three numbers that other 350 blocks could have.

 

[Sprint 6]

The casting number ending in 010 does not equate to only 350's
And there are many other last three numbers that other 350 blocks could have.

The 010 block can also be 2 or 4 bolt mains.

 

[NDIHC]

I've always gone by the stamping at the front machined surface in front of the right (passenger side) cylinder head. The number is stamped on a casting that extends out from the head mounting surface. There's several sources on the net to figure out how to decode the number.