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 Motor upgrade help: New GD 40 FNR vs modded 35 GDSD 
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Location: SLC, UT/ARK-LA-TEX bred
Post Motor upgrade help: New GD 40 FNR vs modded 35 GDSD
Expecting my 20' WC custom to be ready in the next 60 days or so. Currently I got a 2016 Go Devil SD with 89 hrs on it. All bone stock. When I get the boat I'll run it under the motor stock to test performance and speeds, even if that goes good I'll still be looking into 1 of 2 things for more hp. I've planned to just keep my Go Devil and build it out for more hp, the mods will be fun. But after looking into the new Go Devil FNR frame I've had second thoughts, for about $1500 more than what I've got budgeted to go into my current motor I could sell it and buy a new FNR Go Devil. The mechanics behind the instant reverse and all on the new go devil FNR give me hard on. :lol: :twisted:

Pros/Cons I've been able to narrow down b/w the two:
- Current motor: balanced GD direct drive. I've read on here because they're balanced they're harder to control and keep trim right w/ mods.
- I'm in UT, new 40 EFI block will be way more altitude friendly.
- Warranty on the new 40 block
- The new FNR models are 65 lbs heavier
- The new GD FNR has the hex shaft; e.g. more aftermarket prop options
- Overall could probably get more hp modding the 35
- & the obvious one: reverse vs no reverse (I've never had a MM with reverse so for me this isn't a huge deal)

I've been saving money/piecing together this whole rig in my mind for almost a year now... So do I save another $1500 and make the swap for the new 40 FNR or do I just mod the 35 GD motor I have? I was set on just modding my 35 until I started reading they fight back more with mods cuz there balanced. If anybody out there who's done it w/ the GD has any input I'd appreciate it. Thank you.

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40 Go Devil FNR on 20x48 WC Custom --


Tue Dec 18, 2018 9:15 am
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Post Re: Motor upgrade help: New GD 40 FNR vs modded 35 GDSD
I haven't run a fnr frame yet. As far as the normal gdsd, I would say they can be set to drive good into the mid 30's. Others may have different opinions. Upper 30's it becomes a handful. I can make a pass at wot but now way to "cruise" at wot


Tue Dec 18, 2018 9:29 am
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Post Re: Motor upgrade help: New GD 40 FNR vs modded 35 GDSD
If I modded the 35 I'd prolly just do cam, heads, carb and exhaust. I'd like to go further into it but I cant afford to blow a motor.

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40 Go Devil FNR on 20x48 WC Custom --


Tue Dec 18, 2018 5:38 pm
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Post Re: Motor upgrade help: New GD 40 FNR vs modded 35 GDSD


Tue Dec 18, 2018 7:00 pm
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Post Re: Motor upgrade help: New GD 40 FNR vs modded 35 GDSD

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40 Go Devil FNR on 20x48 WC Custom --


Tue Dec 18, 2018 7:32 pm
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Post Re: Motor upgrade help: New GD 40 FNR vs modded 35 GDSD
Get with Bayou Surface Drives or Texas Mud Motors. Save yourself the headache whether you do the work yourself or send to them. Thank yourself later for making a good decision.

#CFFITR
#TheGhostBoat
#whoneedsphysicsihaveamudmotor


Tue Dec 18, 2018 7:53 pm
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Post Re: Motor upgrade help: New GD 40 FNR vs modded 35 GDSD
I would say that with a 20’ boat you would be glad to have reverse simply for maneurving that large heavy boat.


Wed Dec 19, 2018 8:35 am
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Post Re: Motor upgrade help: New GD 40 FNR vs modded 35 GDSD
I like more power, lol. But a new FNR would be pretty dam nice on a new hull


Wed Dec 19, 2018 9:17 am
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Post Re: Motor upgrade help: New GD 40 FNR vs modded 35 GDSD
Not to hijack, but I think this would help the OP out, has anyone on here run the new go devil FNR yet? Thoughts? Don’t think I’ve seen a review yet.


Wed Dec 19, 2018 10:37 am
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Post Re: Motor upgrade help: New GD 40 FNR vs modded 35 GDSD

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40 Go Devil FNR on 20x48 WC Custom --


Wed Dec 19, 2018 6:11 pm
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Post Re: Motor upgrade help: New GD 40 FNR vs modded 35 GDSD
The FNR frame is replacing the GDSD frame....

It is tail heavy unlike the balanced GDSD frame with bigger skeg and no trim fins....

I drove one and posted my thoughts - the 40 is an impressive motor
and ran smoother than any modded motor I had ever driven...

Reverse was functional - but I would pass on the extra cost as I am used to forward only....

viewtopic.php?f=2&t=72342&p=941450&hilit=fnr#p941450

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Wed Dec 19, 2018 6:23 pm
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