C3 Vette (probably) Crate engine Identification

[Martyn68]

Hello can anybody help me identify engine in my "new" C3? There are numbers 1M0425 and under it 30VP at front of the engine block at passanger side. I was not able to find any info to this numbers:-(
Many thanks!

 

[63Half-ton461]

Well it's a small block chevy with pre-1986 heads on it , the intake is a square flange edelbrock performer.

Casting # at very back of block (where the trans bolts up) will tell you if it's a 350 or not.

If u pop a valve cover and get the casting # off the head that would tell us A LOT more about this motor.

 

[Martyn68]

Found a casting # - 0066036 seems like LM1 engine right?

 

[63Half-ton461]

Yup ...... 10066036...350...........2 or 4...Target Master/Goodwrench crate motor, 2-piece rear
seal, "Hecho en Mexico"

And probley has these type heads ...

14024816...........350..........76cc chambers, 1.94/1.5 valves, Gen.I crate motors

The made in mexico motors are well built and get the job done, the cams are super mild so a nice fast acting RV cam like Comps 260H well wake the motor right up .... if someone hasn't re-camed it already.
The only thing it wont give ya is good fuel economy as the open chamber non-swirl port heads aren't made for that.
Solid 300hp with cam intake and headers.

 

[Martyn68]

Very valuable info! Many thanks! Appreciate it