help varifying this engine

[benoit454]

I ran the numbers I got on mortec for the heads and casting on back of block, then checked the nastyz28 site for suffix.

I wanted to have someone varify it's correct or narrow it down better for me. Can someone tell me how to tell the exact bore size, meaning 305 327 or 350? and also what year.

Here's the casting...

3970010- mortec, 69 302 camaro, 69 327 trucks and industrial, 69-80 350 2 and 4 bolt main 350.

It's a 2 bolt main.

heads- 333882 74-80 350/400 76cc.

Suffix or everything off the front pad...

k0619cmj-74 350 t400 police or 305 auto.

158582976 that one I have no idea lol just a long number on the pad.



I was told by other people that...

"Chevroley by the Numbers" says it's a 75 350 cid, 2 bolt main, 145 hp, passenger car, with 350/400 turbo.


158582976 that one I have no idea lol just a long number on the pad.

If I read correct the last two digits indicate its year as a 76

1976 Engines
RPO CID Config Bore & Stroke BHP @ RPM Torque @ rpm Comp Carb.
L-22 250 L-6 3.875 x 3.53 105 @ 3800 185 @ 1200 8.25:1 1V
LG-3 305 V-8 3.736 x 3.48 140 @ 3800 245 @ 2000 8.5:1 2V
LM-1 350 V-8 4.00 x 3.48 165 @ 3800 260 @ 2400 8.5:1 4V


Engine Suffix Codes
CCC: 250ci, at, ce CHU: 350ci, at CPB: 305ci, at, tb
CCD: 250ci, ce CHW: 350ci CPC: 305ci, tb
CCF: 250ci, at CKZ: 350ci, lp CPJ: 305ci, at, ce, tb
CCL: 250ci, lp CMB: 350ci 7X: 350ci
CCJ: 250ci, lp CPA: 305ci, mt, tb CHT: 350ci, mt
CML: 350ci, at, ce


But his list of suffix codes don't match mines says cmj.

[speed]

882 heads were normally used on 350's. 158582976- this was part of the original vin on the car it came from.