i just picked up a 350 and the cast is GM 3970010 and then it has K 8 with a big space between it.

 

www.nastyz28.com
www.mortec.com

-for your decoding pleasure

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Ed Maher - Moderator @ The TPI & Carb Boards
92 Z28 Convertible - Quasar blue / Tan top
305 TPI A4 2.73 - 14.7 @ 93.6
Stock except ported plenum and dual cats
-=ICON Motorsports=-

- Definitely prototypes, high powered mutants of some kind. Too weird to live, too cool to die

 

i got confused with the decoding. any 1 else would like to give it a try?

 

from nastyz28:
1968 3970010 327 - - 2 A
1969-79 3970010 350 185 370 2 or 4 car, truck, Vette

from mortec
3970010....302.....69....4...Z-28 Camaro
3970010....327.....69....2...Trucks and industrial
3970010....350...69-80...2 or 4

That was sure tricky...

 

It's a 350. Very ordinary, very common, nothing special. It came in every 4.000" bore application from 69 to 81: cars, trucks, 2-bolt mains, 4-bolt mains, 165 HP, 375 HP, you name it. There's millions of them in the world. Unfortunately, a huge number of them are afflicted with the 70s starter problem and the 70s lifter bore problem, but so are all other 70s Chevy motors.

What is it you want to know about it?

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"So many Mustangs, so little time..."
ICON Motorsports

 

i just wanted to know the exact year and hp they made. i paid 350 for the motor. has a remanufactured stamp on it. i took the oil pan of and looked inside and the pistons are like new. my freind said it runs better then his 327 so im like wow this sounds like a 12-13 second motor.but il be putin on my own intake and carb. but thanx guys for the help