Looking for a 200 4R Transmission with GN Core [Canada]

[GNRobert1987]

Hi There: I am the proud original owner of a 87 GN. I was looking for an online forum to collaborate with other like minded peops and try to find a transmission with the Grand National core.

The transmission shop that's rebuilding it says I need a GN core. Sadly, the last one I had installed was a standard 200 4R which lasted about 2 weeks. At the time I was not aware there was a big difference between a GN 200 4R and a stock one. I will be rebuilding it in Canada.

Any feedback would be greatly appreciated!

Thanks a bunch!

Rob

 

[Dave Dunbar]

I'm pretty sure the gear train is no different from any 200 4r. Just valve body and governor calibrations. My guess is the one that lasted 2 weeks was not built right.

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[GNRobert1987]

Thanks Dave. I've had two different local transmission guys tell me there is significant enough difference to be concerned. They have worked with both. The guy who's building now it says the GN 200 4r core is the way to go with 500 HP. I found one here http://www.worldofmotorworks.com/store/product_info.php?cPath=1&products_id=509 but am trying to get something in Canada.

Thanks!

R

 

[Phoneguy]

PM sent

Bryan

 

[GNRobert1987]

Thanks Bryan. You just saved my as*!

 

[TexasT]

Plenty of our vendors on here can set you up with a vb/gov combo. Most with 500hp go to a bigger aftermarket servo for 2nd and the required pump mods for the pressure needed for that hp level. And a hard stator support and sun shell for good measure. And if dual feeding or just wanting to for go the tow truck, a billet shaft forward drum.

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[forzfed]

Where are you located?

 

[David Husek]

Hi There: I am the proud original owner of a 87 GN. I was looking for an online forum to collaborate with other like minded peops and try to find a transmission with the Grand National core.

The transmission shop that's rebuilding it says I need a GN core. Sadly, the last one I had installed was a standard 200 4R which lasted about 2 weeks. At the time I was not aware there was a big difference between a GN 200 4R and a stock one. I will be rebuilding it in Canada.

Any feedback would be greatly appreciated!

Thanks a bunch!

Rob

Hi Rob, if you do not find a core, I can set you up with the correct parts to turn your trans into a BR.

You can use the core you have and calibrate it to work correctly. There are many differences in the BR, but all that can be done with a standard core with the correct parts and instruction.

If you need any help, feel free to give me a call.

Dave

 

[GNRobert1987]

Much appreciated Guys! Thanks for all the wonderful advice. It's nice to feel the love for Turbo Buicks

Rich & David, I am passing all this info over to my builder now. If we need any parts we know where to turn, thanks.

Where are you located?

I am in the Sunshine City [Orillia, ON].

Thanks again!

R

 

[Dave Dunbar]

Has the snow melted in Orillia? It's gone in Hamilton.

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[GNRobert1987]

Has the snow melted in Orillia? It's gone in Hamilton.

Just a little bit left up here. This is what our driveway looked like about a month ago https://twitter.com/Robert_Kennedy/status/447446318936375296

Definitely a winter to remember. Hopefully it's over but snow in May is not unheard of.

 

[chris kirk]

Hi There: I am the proud original owner of a 87 GN. I was looking for an online forum to collaborate with other like minded peops and try to find a transmission with the Grand National core.

The transmission shop that's rebuilding it says I need a GN core. Sadly, the last one I had installed was a standard 200 4R which lasted about 2 weeks. At the time I was not aware there was a big difference between a GN 200 4R and a stock one. I will be rebuilding it in Canada.

Any feedback would be greatly appreciated!

Thanks a bunch!

Rob

Still looking? What 's it worth.