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View Full Version : 400 sb

TWO71
07-07-2003, 06:06 PM
who is runnin a 406 400 30 over give me the ups and downs please thanks
wickeds10
07-07-2003, 06:30 PM
with that motor there is no downs they make great power and they are realiable
carguy1959
07-07-2003, 06:34 PM
I\'m running a 406. The motor came out of its orginal car at 164,000 miles and still running. I rebuilt it and it runs great...
tracker
07-08-2003, 05:38 AM
thats what i got !!! look at my info. great motor
LightFighter
07-08-2003, 06:20 AM
they are hard to cool........I had a 86 iroc with a 400 in it........great pwr though
Wendell
07-08-2003, 06:27 AM
that is what i am installing in my truck as well.the only downside is that the cost is slightly higher to rebuild. they can have cooling issues.but all-in-all they are powerful motors
LightFighter
07-08-2003, 07:33 AM
2 bolt mains only also
327Isuzu
07-08-2003, 12:15 PM
Many of the early ones had 4-bolt mains. They can fly. Don\'t forget to drill steam holes if you swap heads.
Shawn03
07-08-2003, 04:22 PM
400\'s are great. I ran a .030 over with a comp cam 292 cam kit, edelbrock torkerII, holley 750 vac secondaries and 202 smog heads back in 87. I remember one issue that came up. I was told to make sure you have the correct fly wheel / flexplate and harmonic balancer because the motor is externally balanced. Dont quote me on that it was a while ago.
wickeds10
07-08-2003, 04:29 PM
On 2003-07-08 21:22, Shawn03 wrote:

400\'s are great. I ran a .030 over with a comp cam 292 cam kit, edelbrock torkerII, holley 750 vac secondaries and 202 smog heads back in 87. I remember one issue that came up. I was told to make sure you have the correct fly wheel / flexplate and harmonic balancer because the motor is externally balanced. Dont quote me on that it was a while ago.

they are externally balanced