What is the highest RPM for SBC 400
#1
Member
JUNIOR BUILDER
Thread Starter
Join Date: Sep 2007
Location: Tacoma, WA
Posts: 79
What is the highest RPM for SBC 400
I am trying to decide what gear ratio to go with but i dont want to be at max rpm at half track. What is the max rpm that i should think about going so as not to do any damage to the engine?
#5
Member
JOURNEYMAN
Join Date: May 2007
Location: San Dog
Posts: 34
Like blittle said, depends on how you build it. I had one in high school with stock 2 bolt bottom. Turned it to 6000 all the time with no problems. Now that I'm older and hopefully wiser I would use splayed caps on a 2-bolt block with the lightest rotating assembly I could afford. 400s are somewhat underrated, build it right and it will throw down solid big block numbers.
#6
Member
JUNIOR BUILDER
Join Date: Aug 2007
Location: Bedford, Ohio
Posts: 86
Building 2 400s right now, setting for 8K rpm max. But one of them I'm using a 3.625 stroke so it'll prolly still be pulling hard at 8K. Other than stroke, building them the same. Using 208 int, having ported now with a super victor.