choice for new motor- 82 K10

[beastie_3]

I think the balancer is a different size, so you might need the correct timing tab.

On the outside, the 400 is basically the same except there is one more freeze plug and it is externally balanced.

[1980c10]

I think the flywheel or flexplate is externally balanced on the 400 so you may need to get one specic for a 400.

[Grim 82]

I have the old motor out, and the new 400 is on the stand and mostly dressed. I'll drop it in and hopefully run it tonight. The casting number on the block ends with 509, which I have heard is a good casting. It has an internally balanced Scat crank and 5.7 rods. I haven't recieved the cards for the cam and everything yet, but this thing was built with a bulletproof bottom end. Somebody ordered this motor and didn't have the money when it was done, and that's where I got the oppurtunity to get it. The only thing I'm not real crazy about is the 882 heads, but he had to take off the aftermarket heads that it was built with and put the 882's on with a thicker head gasket so I can run pump gas in it.

Everything has bolted right up so far. The headers and new Chevrolet aluminum valve covers should be in today. Not sure how the red MSD distributor cap is going to look with an orange motor though...

[bobcooter]

About the 882 heads... 1. They breath really good for stock heads. 2. They will crack if you run them hot. I know about both of these things first hand. Good luck on your project.