400 / 430 Swap

I have a 68 GS400 conv.
I am looking at installing a 430 from a 68 Wildcat. I plan to use my TH400 tranny. Will everything bolt up? What would I have problems with? The only reason I am looking at doing this is to bench my numbers matching 400.
Thanks,
Gil

 

I have not done it buy it should work

All the bolts holes and stuff should be the same. Good luck

 

Thanks Ed...

Will the radiator, linkages, and exhaust bolt up or do I need to make modifications?

Thanks in advance,
Gil :beer

 

the engines are identical. everything will be a direct swap. once it's in you wonrt be able to see a visual difference. the only actual difference is that the pistons are a bit bigger.

 

Compare your oil pans. I'm not sure which years or models, but some of the larger Buicks use a center sump oil pan. The GS has a rear sump oil pan. If you do have to swap the pans, you'll also have to swap the oil pick-up tubes. It's a direct swap. Also you may have to swap accessories and brackets, pulleys, steering pump, etc.

 

Larry is right. The Wildcat engine will have the center sump pan-