Hey guys, I just picked up a 350 4 bolt main, forged steel crank short block.

Anyway, I was just wondering what it came from

The VIN pad had the following:

T 2510 36 V0308TXC

(The spaces on the first set might be numbers/letters, but they have woren away)


Thanks!!

1975 LS9 350/165hp originally from a light duty truck conventional cab & chassis. Assembled March 8, 1975 at the Flint, MI engine assembly plant.

Thanks David.

Only a 165HP huh? Geez I wonder why GM would bother with 4 bolt main and a forged steel crank on such a low HP motor.

Makes me wonder if my 350 (160HP) in my K5 Blazer has a forged steel crank and/or 4 bolt mains. Until now I never thought it would be a chance. Its a 2 piece rear main block which I prefer when the time comes to rebuild.

Anyway, thanks again David.

Was also used in 1 ton truck. Primary reason for 4 bolt mains was trucks

Chances are a 1/2 or 1/4 ton like the Blazer would not get the 4-bolt but u can never tell until you look. 3/4 and up trucks would have it because they were more torque then HP applications.

Hey, I just noticed something on the block.

The casting date says 'B 11 6' which would mean it was cast on Feb 11 1976, right?

Just alittle more info:

Casting Number: 3970010

Larger VIN pad area, unlike some of the later '70's+ that had the small VIN pad.

It also has the nickle and tin markings:

010
020

From what I read, I have a heavy casting with good iron, nickle, and tin content. I hope this block will handle the amount of HP/TQ its going to be making.....