[jbohot]

Delete Me Thanks

..

 

[Rastus]

casting #'s are the only sure way I know of

 

[jbohot]

are you talking about the ones below the alt or hte ones onthe back of th e block...

 

[Rastus]

back of the block

 

[jbohot]

cool, thanks i was just trying to find a eiserway that i didnt know about..

 

[4x4Freak]

The harmonic balancer will have a big notch cut out of it. The others have a solid balancer all the way around. The flexplate will also have a weight welded to it.

 

[54inches]

4x4Freak is partially correct, but you can have an aftermarket balancer or flexplate/flywheel with those same descriptions, and then there were some small block that were balanced just as the 400's were. Casting numbers are the best bet.

If you have access to the side of the block look for one that is stamped with "509". These blocks have a higher nickel content.

If and when you get a 400, start by throwing the heads away.smokin

 

[jbohot]

hey thanks for you guys help...i pulled the numbers off the block infront of passenger head adn below alt...can anyone set up a link for running these numbers...here they are 14J197243 V03CMR
thanks

 

[jbohot]

here are the numbers off the block from behind drivers head 3970010
i havent been able to find any specific info..everything leads to a 327 or a 350...im trying to find out if its a 2bolt or 4..ive tryed several sites but nothing has told me exacly what it is.

 

[4x4Freak]

1974 CMR 350 tur hydro trans. - 145 2 A
1978 CMR 350 m/t L82 4 220 4 Vette/Z-28
1980 CMR 305 auto trans. H LG4 155 4 full size

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

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