TH350 question

Charles Stewart · 12-26-2024, 10:23 AM

With my eternal quest for knowledge, I saw (in recent video from Mr. Fazio) that it's possible to have a TH350 with some Mopar much lighter internals parts inside.
It's still a secret or somebody here can share some info or maybe more details on this subject?
Thanks,

Alan Roehrich · 12-26-2024, 10:40 AM

A couple of companies build light weight internal stuff for the TH350. ProTrans I believe is the one using the Chrysler pieces. I'd ask around about them, see who owns their stuff. Coan makes an XLT package. I always used the ATI aluminum pieces, with a TH250C shell and output shaft.

J.R. Haddad · 12-26-2024, 01:02 PM

Pro Trans does in fact use Mopar pieces in their 350 TH Trans. I have one
and it has been fast and flawless. I don't know how it came about, if the
Smith family already had had all the Chrysler pieces, as originally they
only built Mopar transmissions, and they were an easy retro-fit to the 350 case,
or if the GM pieces were so heavy that it was worth getting the Mopar
pieces to fit, or a combination of both. Opening one of their transmissions
is like opening up a work of Art. Absolutely beautiful work inside.

J.R.

Charles Stewart · 12-26-2024, 03:54 PM

Thanks Mr. Alan Roehrich and Mr. J.R. Haddad for those information.
This will help me a lot more that you may think...
Keep on,

GTX JOHN · 12-27-2024, 12:15 AM

They are now operating out of Waco Texas.

rsalemi · 12-27-2024, 09:31 AM

AMC in 80's used the Chrysler 904 trans with a chevy bolt pattern behind the GM 4 cylinder. Bolts right up to a chevy V8 block and all the internals are 904. They also used a 2.74 low gear instead of the 2.45 standard.

12-26-2024, 10:23 AM	#1
Charles Stewart Member Join Date: Jul 2016 Posts: 389 Likes: 1,655 Liked 753 Times in 213 Posts	TH350 question With my eternal quest for knowledge, I saw (in recent video from Mr. Fazio) that it's possible to have a TH350 with some Mopar much lighter internals parts inside. It's still a secret or somebody here can share some info or maybe more details on this subject? Thanks,

12-26-2024, 10:40 AM	#2
Alan Roehrich Veteran Member Join Date: May 2006 Location: Murfreesboro TN Posts: 5,104 Likes: 1,560 Liked 1,784 Times in 407 Posts	Re: TH350 question A couple of companies build light weight internal stuff for the TH350. ProTrans I believe is the one using the Chrysler pieces. I'd ask around about them, see who owns their stuff. Coan makes an XLT package. I always used the ATI aluminum pieces, with a TH250C shell and output shaft. __________________ Alan Roehrich 212A G/S

12-26-2024, 01:02 PM	#3
J.R. Haddad Senior Member Join Date: Jun 2012 Posts: 784 Likes: 933 Liked 1,463 Times in 307 Posts	Re: TH350 question Pro Trans does in fact use Mopar pieces in their 350 TH Trans. I have one and it has been fast and flawless. I don't know how it came about, if the Smith family already had had all the Chrysler pieces, as originally they only built Mopar transmissions, and they were an easy retro-fit to the 350 case, or if the GM pieces were so heavy that it was worth getting the Mopar pieces to fit, or a combination of both. Opening one of their transmissions is like opening up a work of Art. Absolutely beautiful work inside. J.R.

12-26-2024, 03:54 PM	#4
Charles Stewart Member Join Date: Jul 2016 Posts: 389 Likes: 1,655 Liked 753 Times in 213 Posts	Re: TH350 question Thanks Mr. Alan Roehrich and Mr. J.R. Haddad for those information. This will help me a lot more that you may think... Keep on,

12-27-2024, 12:15 AM	#5
GTX JOHN VIP Member Join Date: Jun 2009 Location: Boulder City, Nevada 89005 Posts: 2,728 Likes: 2,783 Liked 2,462 Times in 694 Posts	Re: TH350 question They are now operating out of Waco Texas. __________________ John Irving 741 Stock 741 Super Stock

12-27-2024, 09:31 AM	#6
rsalemi Junior Member Join Date: Dec 2003 Location: RI Posts: 22 Likes: 0 Liked 21 Times in 9 Posts	Re: TH350 question AMC in 80's used the Chrysler 904 trans with a chevy bolt pattern behind the GM 4 cylinder. Bolts right up to a chevy V8 block and all the internals are 904. They also used a 2.74 low gear instead of the 2.45 standard.