512 block

**302moz** · #1 08-20-2016, 10:50 PM

Wanted a june,july,aug,1969 dated 512 original 4bolt main block. No two bolt conversions.thanks John call 9063373928 or email [email protected]

**Salvatore** · #2 08-21-2016, 12:52 AM

whats wrong with a 2 bolt conversion Johnny K. Did you try L78 Fred??

69L72RS · #3 08-21-2016, 02:36 AM

If you change your mind, I have a 2-bolt June dated standard bore "CE" 512 block and a set of 964 caps, bolts, and sending unit plug.
Also have that shifter nut, if you still need it.

ds1 · #4 08-21-2016, 07:58 PM

Real 4 bolt blocks are different above the oil filter. You can tell factory blocks from machine shop conversions

**bergy** · #5 08-21-2016, 08:51 PM

2 bolts and 4 bolts are the same casting.

**SuperNovaSS** · #6 08-21-2016, 09:16 PM

I think he is referring to the machining done above the oil filter. The 4 bolt blocks are machined for an external oil cooler. There are other machine differences as well.

Jason

**302moz** · #7 08-21-2016, 09:25 PM

yes you are correct the 4 bolts are way different.

ds1 · #8 08-22-2016, 09:55 PM

https://www.yenko.net/ubbthreads/ubbt...4&page=all
This should explain it.

**bergy** · #9 08-22-2016, 11:40 PM

Easy fix for a good machinist!