Log manifolds

[RCM]

Will log type manifolds allow a motor to turn in the 5500- 6000 rpm range as long as the motor is capable of this on header type exhaust system?
The log seems to be easier to get the right water flow and temp range right, anyone got any good answers? RCM

[76BARRON]

We have a 427 ford with duel carbs,solid cam and run 6,300 to
6,500 thru wet log's.

[dmontzsta]

I wouldnt think it would be a problem at all.

[LakesOnly]

I'm working on a v-drive that turns 8000 with logs.
LO

[rrrr]

Originally posted by 76BARRON
We have a 427 ford with duel carbs,solid cam and run 6,300 to
6,500 thru wet log's.
Me too. Runs without any problems.

[Rexone]

I think he's asking are the logs as efficient an exhaust system as headers. No would be the answer. Whether you'll achieve the same RPM is dependent on lots of factors. The more HP capability the particular engine has the more of a difference you will see. This all assumes you are geared and propped to maximum performance with the headers before the change is made. If you're not targeting the peak HP of the motor to start with or you are not geared to load the motor to that peak your results changing to logs will be skewed.
All in all the headers will outperform the logs on a motor that has the capibility to use the advantage of the header's design. On a stock motor you may see little or no difference.