Thread
:
sbc 400
View Single Post
03-25-2010, 03:26 AM
#
5
JEFF69Z28
Senior Member
DYNO OPERATOR
Join Date: Apr 2008
Posts: 496
511 is the 4 bolt main block i think,the 2 bolt main block is stronger,but my 406(511) has been abused for a couple of yers at the track and so far so good.
Reply
JEFF69Z28
View Public Profile
Send a private message to JEFF69Z28
Find More Posts by JEFF69Z28