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  1. #1
    Join Date
    Oct 2020
    Posts
    10

    Default 1.67:1 Transmission w/ 16x12.5 Prop - Overkill?

    Does anyone have experience with the 1.67 Transmission with "High Elevation" 16x12.5 prop?

    This is our current selection but I am wondering if it is overkill as we are low elevation. We only surf and have no real need to go above 25mph at any time.

    We will have 700lbs of lead and normally run a decent sized crew. Obviously looking to optimize performance for surfing but don't want to over do it

    Would love everyone's thoughts.
    2021 Supra SA 450 (Arriving Soon)

  2. #2
    Join Date
    Jun 2020
    Location
    Reno, NV
    Posts
    336

    Default

    We boat at 6000’ with 1.76 transmission and a 16x15, 900# of lead and have no issues. That was crew of 2, but I’m sure 5-6 more would matter much. The 16x13.9 might be a better option. I intend to pick up one and decide which I prefer.
    2020 SA 450 Wife calls it White Cloud. Said it makes her feel "Classy"
    2017 Sanger V215sx. We call it Viagra because it's the little blue pill that gets everyone up (Sold)

  3. #3
    Join Date
    Aug 2015
    Location
    Mn
    Posts
    653

    Default

    The 1.76 is a welcome upgrade. If you only want to go no more than 25 mph then you won't care if you prop down to a 12.5"pitch, you'll have torque to spare, but, I don't think it is necessary. You can sport a 15" pitch prop, at a lower elevation with 4-5k lbs ballast and be fine. It is essentially a balance between speed and torque, finding that happy medium. I would not go over 15", other than that, it's a matter of preference.
    2020 Supra SL 400
    2015 Moomba Mojo(Sold)
    2018 Yamaha Waverunner(Just to fool around)
    2018 F150 Lariat
    sport edition, 3.5lt ecoboost

  4. #4
    Join Date
    May 2018
    Posts
    2,999

    Default

    The 16x13.9 is a prop Supra designed with acme specifically for the 1.76 trans.

    It also replaces the 16x15 factory option.


    Sent from my iPhone using Tapatalk
    2021 Supra SA 400
    2018 Supra SA 400 (SOLD)
    Michigan

  5. #5

    Default

    I have the 3145- 16x13 prop. It is overkill at low elevation but at 6000+ with 10 people it is needed. 16x15 will be perfect at low elevation.
    DDNorCal
    2019 Supra 450 SL, 1,000 lb lead and 3145 prop
    Sold - 2006 LSV 3430 Ballast, 1847 Prop, all around great boat

  6. #6
    Join Date
    May 2018
    Posts
    2,999

    Default

    My understanding is the 16x13.9 pulls like a 13 and top ends like a 15.


    Sent from my iPhone using Tapatalk
    2021 Supra SA 400
    2018 Supra SA 400 (SOLD)
    Michigan

  7. #7
    Join Date
    Jun 2020
    Location
    Reno, NV
    Posts
    336

    Default

    Quote Originally Posted by larry_arizona View Post
    My understanding is the 16x13.9 pulls like a 13 and top ends like a 15.


    Sent from my iPhone using Tapatalk
    It would be wonderful if you could get one. Wakemakers doesn’t list them. ACME is back ordered since early December.
    2020 SA 450 Wife calls it White Cloud. Said it makes her feel "Classy"
    2017 Sanger V215sx. We call it Viagra because it's the little blue pill that gets everyone up (Sold)

  8. #8
    Join Date
    Aug 2020
    Location
    Middle Tennessee
    Posts
    344

    Default

    Wakemakers is showing in stock on the 13.9 when I looked yesterday
    2020 Supra SA

  9. #9
    Join Date
    Jun 2020
    Location
    Reno, NV
    Posts
    336

    Default

    Quote Originally Posted by SONIC View Post
    Wakemakers is showing in stock on the 13.9 when I looked yesterday
    I had to clear my cache to get updated page information. Itís in the cart now just waiting for authorization from the CFO. Thanks for waking me up to my mistake.

    I want to put the 3591 on and keep the 3337 as a spare. When we move to Austin, Iím going to test them both to see which is better.
    2020 SA 450 Wife calls it White Cloud. Said it makes her feel "Classy"
    2017 Sanger V215sx. We call it Viagra because it's the little blue pill that gets everyone up (Sold)

  10. #10
    Join Date
    Aug 2020
    Location
    Middle Tennessee
    Posts
    344

    Default

    I'm going to do the same.
    I don't need the extra torque really but it's always nice!
    2020 Supra SA

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