Old 05-13-2007, 08:54 PM
  #1  
badbug3
Member
JUNIOR BUILDER
 
Join Date: Jan 2004
Posts: 77
Default what is a reasonable reliable rpm for 572 4.5 by 4.5

on a 572 bbc in a boat, what would be the top rpm to turn the motor to keep it reliable? It has 6.535 length rods and 4.5 stroke and 10.2 deck. I really need to add a little nitrous to get a little more power and need to turn 7000 rpm. Will the low rod stroke ratio take its toll at this rpm. This rpm is only obtained while running in a quarter mile and not for any length of time at all. Mainly on a drag run. Motor has ohio crank, and ohio i beam rods with arp 2000 rod bolts. Would it be wise to change the bolts to L-19 rod bolts? Compression is only 10-1.
badbug3 is offline