Full Size Chevy drivshaft length w TH350

impstocker · 04-12-2017, 05:50 AM

In my 65 Impala Stocker, I am going to run a TH350 with the "short" tailshaft. First can I assume this is the most common type of TH350 used? The driveshaft I have is the one I used with a Jerico in my 68 Impala I used to have. I had this one made, a 3.5 inch. I cannot use this driveshaft because it is not long enough with the TH350 I will now be using. I need to get one made about 6" longer.

My question I guess is for anybody who has run a full size Chevy with a TH350 "short" tailshaft is there an issue with running such a long driveshaft ? This is a 396/325 car , highest RPM around 6700
Any info/input would be appreciated.

Will Lamprecht
1965 Impala 396/325 I/SA
'

Jim Kaekel · 04-12-2017, 08:47 AM

I would talk to Mark Williams. They have a formula and could give you a reputable answer. Obviously, you could shorten it up by converting your trans. over to a 12" long tail housing if needed. All you need is the output and tail housing.

Bob Bender · 04-12-2017, 08:50 AM

Quote:

Originally Posted by impstocker

In my 65 Impala Stocker, I am going to run a TH350 with the "short" tailshaft. First can I assume this is the most common type of TH350 used? The driveshaft I have is the one I used with a Jerico in my 68 Impala I used to have. I had this one made, a 3.5 inch. I cannot use this driveshaft because it is not long enough with the TH350 I will now be using. I need to get one made about 6" longer.

My question I guess is for anybody who has run a full size Chevy with a TH350 "short" tailshaft is there an issue with running such a long driveshaft ? This is a 396/325 car , highest RPM around 6700
Any info/input would be appreciated.

Will Lamprecht
1965 Impala 396/325 I/SA

'

I have had no problems with a stock shaft @ 4400 lbs.

Lee Valentine · 04-12-2017, 04:40 PM

Will,call Bruce P.914-591-7754 in the evening.He had one made for his Biscayne, short tail TH350,780 hp. Big Block. I believe Fleetpride in Danbury made it.

5389stk · 04-12-2017, 11:58 PM

Will, use 1350 joints and chrome moly trans yoke . Learned this expensive way .Broke trans yoke busted transmission case. Steve

04-12-2017, 05:50 AM	#1
impstocker Member Join Date: Dec 2008 Location: Wingdale, NY Posts: 302 Likes: 27 Liked 53 Times in 16 Posts	Full Size Chevy drivshaft length w TH350 In my 65 Impala Stocker, I am going to run a TH350 with the "short" tailshaft. First can I assume this is the most common type of TH350 used? The driveshaft I have is the one I used with a Jerico in my 68 Impala I used to have. I had this one made, a 3.5 inch. I cannot use this driveshaft because it is not long enough with the TH350 I will now be using. I need to get one made about 6" longer. My question I guess is for anybody who has run a full size Chevy with a TH350 "short" tailshaft is there an issue with running such a long driveshaft ? This is a 396/325 car , highest RPM around 6700 Any info/input would be appreciated. Will Lamprecht 1965 Impala 396/325 I/SA '

04-12-2017, 08:47 AM	#2
Jim Kaekel VIP Member Join Date: Jul 2002 Location: Michigan Posts: 1,226 Likes: 133 Liked 529 Times in 107 Posts	Re: Full Size Chevy drivshaft length w TH350 I would talk to Mark Williams. They have a formula and could give you a reputable answer. Obviously, you could shorten it up by converting your trans. over to a 12" long tail housing if needed. All you need is the output and tail housing. __________________ Jim Kaekel 3836 STK

04-12-2017, 04:40 PM	#4
Lee Valentine Senior Member Join Date: May 2004 Location: Brookfield, CT Posts: 708 Likes: 13 Liked 319 Times in 68 Posts	Re: Full Size Chevy drivshaft length w TH350 Will,call Bruce P.914-591-7754 in the evening.He had one made for his Biscayne, short tail TH350,780 hp. Big Block. I believe Fleetpride in Danbury made it. __________________ Lee Valentine 1661 STK

04-12-2017, 11:58 PM	#5
5389stk Junior Member Join Date: Aug 2013 Posts: 28 Likes: 0 Liked 72 Times in 6 Posts	Re: Full Size Chevy drivshaft length w TH350 Will, use 1350 joints and chrome moly trans yoke . Learned this expensive way .Broke trans yoke busted transmission case. Steve