Will an 89 OMC Cobra outdrive handle a 454?

[gilliac]

I am trying to get a powertrain together for an old Donzi 25 ft cruiser. It came with a Chevy 350 and a Cobra outdrive. The outdrive appears in good condition, but the motor is a lost cause.
I also have a carbed 454 (300HP). Will the Cobra handle the torque of the 454? I think the 460 Ford motors always had a King Cobra, but I have no idea what the difference is in the two drives. Any input would be appreciated.
Thanks
Gil

 

[Bondo]

I am trying to get a powertrain together for an old Donzi 25 ft cruiser.

Ayuh,..... Then get Away from everything OMC right Now, not later,.....

Find a rotten boat with the driveline ya want, 'n junk it out,.... a Donor boat,....

Go Merc,... Go Volvo,... but Don't continue with the OMC at this point,....

 

[skippy2235]

NO NO NO, OMC cobra was only rated for 250 HP. and 240 lbs torque.
Go Bravo

 

[HT32BSX115]

I am trying to get a powertrain together for an old Donzi 25 ft cruiser. It came with a Chevy 350 and a Cobra outdrive. The outdrive appears in good condition, but the motor is a lost cause.
I also have a carbed 454 (300HP). Will the Cobra handle the torque of the 454? I think the 460 Ford motors always had a King Cobra, but I have no idea what the difference is in the two drives. Any input would be appreciated.
Thanks
Gil

OMC actually did have a 7.4 model with the dog-clutch drive in 1989.

But that drive is the same as the one they used behind the 460. Good luck finding one.

I wouldn't put the 454 in front of the smaller models.

Best bet would be selling all your OMC stuff and getting Mercruiser or Volvo.

I couldn't find any Volvo stuff so I bought a complete 454/Bravo III and replaced my 460 KC with the Merc.

Took me a while but I was able to sell just about all of the OMC "stuff" ........all totaled, I recovered about $3500 and I still have 2 OMC SS props and the mounting bracket castings for the alternator, and fuel & oil filters. I'll probably eBay them one of these days.......

You could probably easily sell all your OMC stuff.

Regards,


Rick

 

[jerryjerry05]

The gear ratio is different.
The flywheel might fit probably not.
Manifolds and pretty much most stuff won't fit.
Don't waste the effort or $$$

 

[gilliac]

Thanks guys. Guess I will try and find a complete motor/outdrive package.

 

[Bondo]

Thanks guys. Guess I will try and find a complete motor/outdrive package.

Ayuh,.... Rotten boats will be gettin' Cheap, come Fall,....

Find yerself a Rotten hull, with the driveline ya want, 'n junk it out for the driveline,....