727 adaptor for a 5.7 hemi

SStockDart · 10-08-2016, 09:27 PM

Does anyone know of an adaptor to put my big block Pro Trans 727 behind a 5.7 new hemi?
I have read that a small block 904 will bolt up, but, that doesn't help me?

Steve Stasko · 10-08-2016, 10:59 PM

I've heard of small block to big block adapters and bells, but never the other way. The Gen 3 Hemi's share the same bell housing pattern as the small blocks. So any Small Block Chrysler transmission, be it a 727, 904, 998/9, 500, 518, etc will bolt right up. Be sure you have the proper flexplate and converter for the application of course.

Eric Merryfield · 10-09-2016, 07:45 AM

Quote:

Originally Posted by SStockDart

Does anyone know of an adaptor to put my big block Pro Trans 727 behind a 5.7 new hemi?
I have read that a small block 904 will bolt up, but, that doesn't help me?

I am not aware of any adapter. Might want to give Dave a call at protrans to see if you can get yours swapped into a small block case. If you run the 904 you have to get everything with the bullet proof pieces like my A & A if you want drama free racing.

Eric

10-08-2016, 09:27 PM	#1
SStockDart VIP Member Join Date: Dec 2007 Location: Arizona, Texan forever Posts: 1,116 Likes: 720 Liked 459 Times in 174 Posts	727 adaptor for a 5.7 hemi Does anyone know of an adaptor to put my big block Pro Trans 727 behind a 5.7 new hemi? I have read that a small block 904 will bolt up, but, that doesn't help me? __________________ Gary Hansen - SS/FA 4911, B/SA 4911 Last edited by SStockDart; 10-08-2016 at 10:21 PM.

10-08-2016, 10:59 PM	#2
Steve Stasko Member Join Date: Jul 2011 Location: Western PA Posts: 418 Likes: 5 Liked 230 Times in 121 Posts	Re: 727 adaptor for a 5.7 hemi I've heard of small block to big block adapters and bells, but never the other way. The Gen 3 Hemi's share the same bell housing pattern as the small blocks. So any Small Block Chrysler transmission, be it a 727, 904, 998/9, 500, 518, etc will bolt right up. Be sure you have the proper flexplate and converter for the application of course.