RPMs...

[Anonymous]

Alrighty i need to know what safe long period of time 223-6 RPMs are. If i run the 4.88s whith a set of 33s like i whant it will run at 60mph at about 3000rpms. Will this be good for this engine? It dosnt make peak HP untill 3600rpms and uaually thats as high as you can rev em and im a bit lower than that. Thanks.

 

[Anonymous]

I had a built 215 inline that i drove at about 3100 on the freeway for hours at a time and never had a problem. Id shift it at 4600 RPM

 

[Anonymous]

check this out. this will answer your question.http://fordsix.com/forum/viewtopic.php?t=13215