I want to repower my 23hp GDSD to a 35hp engine. Is the 23 hp and 35 hp frames the same? i know i will need to regear and possibly a new belt.

No the 35 has a 36inch shaft length and the 23 a 32 inch. Other than that in may work I don't know for sure

Call gd

Call Go Devil x 2 They will help you out with your options. Duckdon

I have the 27 hp and I wanted to up grade to the 35 and it woulda cost me $3200,

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for Them to do it?

well i sent godevil an e-mail and was told the 35 uses a different frame.
i asked for specifics and all i got was a different frame size.(Some woman named Donna)

i was thinking since i wanted more power instead of heads,cam,exhaust,etc.
i could just upsize the engine and have more reliable horsepower for the same price.

Does anyone have a model number for a briggs 35hp GDSD so i can compare some specs. and measurements?

I know i will need to replace upper gear and possibly belt. Will godevil even sell me parts that are not for my specific motor/serial number?

613477-0193-E2 is the marine without the 50 amp charging system and 613477-0194-E2 is the marine with the 50 amp charging system!!! http://www.twofeatherssmallengine.com/p ... e-50a.aspx

thanks for the info

A 23 has a 5 1/4" crank hieght.

A 35 has a 7 1/2" crank hieight.
Some mfg's 23 frames use a 35 frame with spacers under the block to bring it to 7 1/2" so they can be swaped easily.
Others are a completley different frame with a different plate hieght, considering you can't even swap a GDSD to a tall transom without buying the whole shabang lower unit and all... My guess is it is a PITA to swap them and Coco will haunt you if you do.