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View Full Version : 81 18c 350 chevy alpha 1 26p factory prop



lee
04-26-2007, 07:34 PM
am getting ready for my first run this weekend was wondering if anyone had any idea of what my WOT rpm's and speed should be so i have a

idea in 6-8 inch chop

RedDog
04-26-2007, 09:57 PM
26" prop is sure big for a stock 350. No one can answer without a lot more detail about just what you are running. If all is stock a 26" prop is going to be a dog

sorry, try a 21 or 23 inch prop

MOP
04-26-2007, 10:28 PM
I think a 23 will turn out a bit better then a 21, a 21 will turn a little to much RPM. Good for skiing but not for top and overall, two local 18's are using 23's and turning in the 60's and still jump up.

Phil

mrfixxall
04-26-2007, 10:44 PM
am getting ready for my first run this weekend was wondering if anyone had any idea of what my WOT rpm's and speed should be so i have a
idea in 6-8 inch chop

stock? if you can get it on plane i would say 3600-3800 rpm...45-50 mph if you run the 26'' prop,,,

lee
04-27-2007, 07:24 AM
got some bad advise thanks will correct now

Sam
04-27-2007, 07:27 AM
TEST TEST and TEST but my guess is 21" on the low side and 23" on the high side. The thing is you never know, each prop has its own personality. Personally if I was looking for a good do all prop I would start with a Turbo. They seem to be very well mannered while delivering good performance at an affordable price.

Good Luck
Sam

MOP
04-27-2007, 11:43 AM
Lee I checked a previous post you said the boat had a 23 4 blade or 24 3 blade, why would you try a 26? What is the engines HP? Stock 260 probably a 21, 300 HP a 23 should be ball park.

Phil

Cuda
04-29-2007, 09:31 PM
I have a couple of 21 cleavers on ebay right now. If they don't sell, they will be available in a day or two.

John Benkoczy
05-01-2007, 09:55 AM
Scott - what did you run on the 18 2+3 when you you had it? The boat came with a 26" - I haven't run it yet -> hopefully the ice on Lake George is about gone and it'll be in the water in the next week or two.

JB