350 ID

[Captn. J]

can anyone tell me about this number off the block of a 350       3970010

[Chevy Racer]

2 bolt or 4 bolt mains more common.  1969-1979 350 or 302 Chevy

[Captn. J]

how do i know if it s 4 bolt? and i wanna avoid 305's    how i know if its  350 or 305?

[hot rod heep]

350  had a bigger  diamator  ballancer    305 has a thicker  and smaller diamater ballanser    and the 400  has the noch in the ballancer

[Captn. J]

thanks

[89SHORTBOX]

id google it just to be sure...

[J.C.]

its a 350 block i believe, the 010 blocks had more nickel? higher nickel content means stronger...

edit  http://www.hotrodders.com/forum/sbc-3970010-good-block-46624.html

says high nickel and tin. gotta pull the pan to tell if its 2 or 4 bolt main.

[Captn. J]

i picked this motor up for  $125   it s from a 78 full size  van  i plan on checking into it later

[BigFrank]

i picked this motor up for  $125   it s from a 78 full size  van  i plan on checking into it later

the book i have says that # block was used in69 vette 350 camaro 302     69 to 79 truck passanger car  70 71 corvette  2 and 4 bolt main  the head casting #s tell ya more   im quote in cars and parts catalogof chevy v 8 engine casting numbers 

[camok10]

the partial vin will tell you exactly what year and what it came out of it's the suffix code on the block in the front it would be right infront of the passenger head

here's what mortec come's back with for the casting number's

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


here's the site
http://web.archive.org/web/20080506065350/www.mortec.com/castnum.htm

[Captn. J]

i ll look for the heads number n post up here n see what i have

[J.C.]

if it came out of a 78 chevy van, id bet its a 350...  but, ya never know if it was a stock motor...