4.3 rpm limit
Super Member
Joined: Sep 2010
Posts: 1,485
From: Lynnwood WA
I believe theres an RPM limiter at 5500, thats what ive heard anyways. But i never try to get mine that high. Its been at 5000 a total of maybe 4 times when i was trying to pass quickly.
But a couple times a month i like to do a good Italian tune and let it get to 4k RPM when im getting on the freeway or something. Engines are made to do that, just dont hold it there very long.
My dads old SeaRay had the 4.3 marine engine in it and that thing would regularly hang out at 4500-5000 RPM for long periods of time. Its a little more efficient at cooling than the car version but it has almost the same internals, aside from the cam.
But a couple times a month i like to do a good Italian tune and let it get to 4k RPM when im getting on the freeway or something. Engines are made to do that, just dont hold it there very long.
My dads old SeaRay had the 4.3 marine engine in it and that thing would regularly hang out at 4500-5000 RPM for long periods of time. Its a little more efficient at cooling than the car version but it has almost the same internals, aside from the cam.
BF Guru
Joined: Oct 2010
Posts: 5,962
From: Summit Ny
I believe theres an RPM limiter at 5500, thats what ive heard anyways. But i never try to get mine that high. Its been at 5000 a total of maybe 4 times when i was trying to pass quickly.
But a couple times a month i like to do a good Italian tune and let it get to 4k RPM when im getting on the freeway or something. Engines are made to do that, just dont hold it there very long.
My dads old SeaRay had the 4.3 marine engine in it and that thing would regularly hang out at 4500-5000 RPM for long periods of time. Its a little more efficient at cooling than the car version but it has almost the same internals, aside from the cam.
But a couple times a month i like to do a good Italian tune and let it get to 4k RPM when im getting on the freeway or something. Engines are made to do that, just dont hold it there very long.
My dads old SeaRay had the 4.3 marine engine in it and that thing would regularly hang out at 4500-5000 RPM for long periods of time. Its a little more efficient at cooling than the car version but it has almost the same internals, aside from the cam.
Lol italian tune....
My dad likes to do this and yes we are italianCherry you got repped for that one It made my night
Thread Starter
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Beginning Member
Joined: Nov 2012
Posts: 24
From: Burley Idaho
as does mine, 5500 daily ha
thinking about buying a spare 4.3 and building it but with better cams and stiffer springs and so on.. my goal would be a 9000 rpm motor.. for absolutely no reason just think it would be cool.
thinking about buying a spare 4.3 and building it but with better cams and stiffer springs and so on.. my goal would be a 9000 rpm motor.. for absolutely no reason just think it would be cool.