OK I ADMIT IT.......
 

well, i was fishing with a buddy on thursday (one of my favorite spots and thankfully our peace and quiet wasnt interupted by any of those pesky fish) and i decided to open her up for a second or two. well, she got up and danced but only turned 3600 rpm. guess she was running about 40 or better but the rpms seemed a bit low to me. the motor is a 350 chevy. anybody care to chime in?

Re: OK I ADMIT IT.......
 

.....should be up around 4200-4500....so I've read

Re: OK I ADMIT IT.......
 

tell you the truth... if she runs in the 40's at 3600, i dont think i wanna run her at 4200 - 4500.
to dam fast for me.

Re: OK I ADMIT IT.......
 

But, if your motor doesn't max out at 4200-4600 WOT, you are overworking the motor and will cause problems down the road. It's not a good situation to have "enough speed for me" at less than the recommended WOT RPM's.
Find out the cause.

Re: OK I ADMIT IT.......
 

Charlie, Hmm, I think that boat is just way to fast for. Time to s ;D ;Dell her for half the price. ;D ;)

Re: OK I ADMIT IT.......
 

Phesters right, a 350 should run at 4200rpm if propped correctly. 3600 seems real low. Mine runs at 4200 and its over 25 years old.

Re: OK I ADMIT IT.......
 

ok, so where do i start?

Re: OK I ADMIT IT.......
 

Mine would rev to about 5200 rpm ( small block V8 GM/ Volvo) and it had run as fast as 52 mph on the fishfinder (before I had a good gps) I have the same fishfinder and it is accurate within 2 mph most of the time on my
new boat. I
I would do the following
1. Check the timing and then the spark advance
2. If it's a 4bbl, make sure the secondaries are opening.
3.Beyond that, I'd look at the outdrive gearing and prop. But other people know way more about the drives than I ever will.

Re: OK I ADMIT IT.......
 

Charlie, has it EVER run more rpms and just started turnin' slower or has it always (since you got it) topped out at 3600?...if it's something that just started happenin', Franco's on the mark ;) ...on the other hand, if it's always done this, you may have the wrong prop on 'er ??? ...

Re: OK I ADMIT IT.......
 

Charlie, WOT for my 5.7L EFI is 4400-4800 according to the owners manual. Start with a different prop