driveshaft for LS1 swap
#1
Member
Thread Starter
Join Date: Mar 2002
Location: RI
Posts: 213
Likes: 0
Received 1 Like
on
1 Post
Car: 1991 Trans Am
Engine: 5.3L
Transmission: auto
driveshaft for LS1 swap
I'm using spohn conversion mounts for my 5.3/4L60e swap. I'm trying to reinstall the old driveshaft from my 91. It seems like it is about 1" too long.
I thought I have read here about using the stock driveshaft for the swap. Are you guys using the LS1 driveshaft?
I thought I have read here about using the stock driveshaft for the swap. Are you guys using the LS1 driveshaft?
#3
Moderator
iTrader: (14)
Join Date: Mar 2000
Location: Littleton, CO USA
Posts: 43,169
Likes: 0
Received 35 Likes
on
34 Posts
Car: 82 Berlinetta/57 Bel Air
Engine: LS1/LQ4
Transmission: 4L60E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
1" setback swap mounts will make your driveshaft 1" too long.
Although the description doesn't tell you, Spohn's are 1" setback.
Although the description doesn't tell you, Spohn's are 1" setback.
#5
Supreme Member
iTrader: (5)
Join Date: Jan 2002
Location: Orland Park, IL
Posts: 13,619
Likes: 0
Received 3 Likes
on
3 Posts
Car: 1984 Z28
Engine: SLOW carbed ls
Transmission: TH400 with brake, 8" PTC converter
Axle/Gears: moser 9" 4.11
Re: driveshaft for LS1 swap
1" setback mounts puts the rear of the block in the OEM position to mate up with the trans in the exact spot. Put those swap mounts in probably 10 cars now, none of them had the trans move at all.
#6
Supreme Member
iTrader: (4)
Re: driveshaft for LS1 swap
I STILL dont understand this 1" set back nonsense. When I got my mounts there was no talk of 1" set back. My motor is in the same spot as the original. I dont see room behind the block for 1" of movement. Maybe there is..but it would get tight.
I was under the impression that the drive shafts were interchangeable with most people using the LS1 shaft since its aluminum and usually has better u-joints (as in less miles/years).
So just for the record...Im running Spohn mounts and a stock LS driveshaft infront of a Strange 12-bolt. So I have the conversion joint at the rear. No problems, fits 100% like factory.
J.
I was under the impression that the drive shafts were interchangeable with most people using the LS1 shaft since its aluminum and usually has better u-joints (as in less miles/years).
So just for the record...Im running Spohn mounts and a stock LS driveshaft infront of a Strange 12-bolt. So I have the conversion joint at the rear. No problems, fits 100% like factory.
J.
#7
Supreme Member
iTrader: (4)
Join Date: Mar 2009
Location: Pepperell, MA
Posts: 3,079
Likes: 0
Received 3 Likes
on
3 Posts
Car: 1987 Trans Am
Engine: LQ9/L92
Transmission: 4L60E
Re: driveshaft for LS1 swap
the "setbacks" put the trans tailshaft exactly where the stock one was, driveshaft would fit exactly like the factory setup.
i'm currently using 1" setbacks, LQ9, 4L60E, ford 9" rear, and stock ls1 driveshaft. ds fit without any problems. fit the 10 bolt and 9 bolt rears I had the same as well
Trending Topics
#8
Supreme Member
iTrader: (4)
Join Date: Mar 2009
Location: Pepperell, MA
Posts: 3,079
Likes: 0
Received 3 Likes
on
3 Posts
Car: 1987 Trans Am
Engine: LQ9/L92
Transmission: 4L60E
Re: driveshaft for LS1 swap
I STILL dont understand this 1" set back nonsense. When I got my mounts there was no talk of 1" set back. My motor is in the same spot as the original. I dont see room behind the block for 1" of movement. Maybe there is..but it would get tight.
I was under the impression that the drive shafts were interchangeable with most people using the LS1 shaft since its aluminum and usually has better u-joints (as in less miles/years).
So just for the record...Im running Spohn mounts and a stock LS driveshaft infront of a Strange 12-bolt. So I have the conversion joint at the rear. No problems, fits 100% like factory.
J.
I was under the impression that the drive shafts were interchangeable with most people using the LS1 shaft since its aluminum and usually has better u-joints (as in less miles/years).
So just for the record...Im running Spohn mounts and a stock LS driveshaft infront of a Strange 12-bolt. So I have the conversion joint at the rear. No problems, fits 100% like factory.
J.
#9
Supreme Member
iTrader: (4)
Join Date: Mar 2009
Location: Pepperell, MA
Posts: 3,079
Likes: 0
Received 3 Likes
on
3 Posts
Car: 1987 Trans Am
Engine: LQ9/L92
Transmission: 4L60E
Re: driveshaft for LS1 swap
this may be a very silly question, and i'm sorry to have to ask, but did you install the ds into the trans first? there should be quite a lot of room to slide it into the tailshaft first and then slide back into the rear
#10
Member
iTrader: (2)
Join Date: Mar 2004
Location: NE Pa
Posts: 250
Likes: 0
Received 0 Likes
on
0 Posts
Car: 1989 Iroc-Z Convertible
Engine: 6.0 LQ4 LSX
Transmission: T56
Axle/Gears: Moser 12 bolt w/4.11s
Re: driveshaft for LS1 swap
same here, spohn mounts along with ls1 alum. drive shaft, stock 10 bolt fit no problem.
#11
Senior Member
iTrader: (8)
Join Date: Mar 2008
Location: NH
Posts: 655
Likes: 0
Received 2 Likes
on
1 Post
Car: 1967 Firebird P.T.
Engine: LS3 4" Strkr 422ci
Transmission: MN12 6 speed
Axle/Gears: 3.73 8.5" 10 Bolt Eaton
Re: driveshaft for LS1 swap
Greg somethin isnt right man, i used the same mounts and had no issue with the D/S
#12
Moderator
iTrader: (14)
Join Date: Mar 2000
Location: Littleton, CO USA
Posts: 43,169
Likes: 0
Received 35 Likes
on
34 Posts
Car: 82 Berlinetta/57 Bel Air
Engine: LS1/LQ4
Transmission: 4L60E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
Full disclosure: I had a custom 3" DOM driveshaft built for both of mine - measured the output shaft to pinion yoke distance and the shop fab'd up an indestructible DS for me.
So, what else did you do? LCA's?
So, what else did you do? LCA's?
#13
Member
Thread Starter
Join Date: Mar 2002
Location: RI
Posts: 213
Likes: 0
Received 1 Like
on
1 Post
Car: 1991 Trans Am
Engine: 5.3L
Transmission: auto
Re: driveshaft for LS1 swap
I have the stock 10 bolt rear, and all suspension is stock. The torque arm is already connected, and the trans mount is bolted up. The front wheels are on ramps and the rear end is on jack stands.
The driveshaft was installed into the trans first. It slides into the 4L60e fine with no binding. Discoloration on the yoke suggests that it slid into the 700R4 about an inch more, but I cannot get it in any further. That is probably the problem.
I'm wondering if the LS1 driveshaft has a shorter yoke, or there is something up with the case, or I am installing it wrong.
The driveshaft was installed into the trans first. It slides into the 4L60e fine with no binding. Discoloration on the yoke suggests that it slid into the 700R4 about an inch more, but I cannot get it in any further. That is probably the problem.
I'm wondering if the LS1 driveshaft has a shorter yoke, or there is something up with the case, or I am installing it wrong.
#14
Supreme Member
iTrader: (9)
Re: driveshaft for LS1 swap
I have the stock 10 bolt rear, and all suspension is stock. The torque arm is already connected, and the trans mount is bolted up. The front wheels are on ramps and the rear end is on jack stands.
The driveshaft was installed into the trans first. It slides into the 4L60e fine with no binding. Discoloration on the yoke suggests that it slid into the 700R4 about an inch more, but I cannot get it in any further. That is probably the problem.
I'm wondering if the LS1 driveshaft has a shorter yoke, or there is something up with the case, or I am installing it wrong.
The driveshaft was installed into the trans first. It slides into the 4L60e fine with no binding. Discoloration on the yoke suggests that it slid into the 700R4 about an inch more, but I cannot get it in any further. That is probably the problem.
I'm wondering if the LS1 driveshaft has a shorter yoke, or there is something up with the case, or I am installing it wrong.
usually with a stock yoke you can slide it in the trans until the seal hits the yoke seals with out the little dust cover still get very close
what did your trans and shaft come out of? ive seen t56 outputs where the splines were beat up so bad they refused to slide in all the way. is there a chance the auto came from a wreck?
#15
Supreme Member
Re: driveshaft for LS1 swap
stock 1987 ds used here into the t56 using hawks swap mounts.no issue at all or vibration etc
#16
Senior Member
iTrader: (2)
Re: driveshaft for LS1 swap
This thread has been fermenting in the back of my mind. I am seeking some clarity. Since I am running BMR K-member, my engine and trans are 1" further forward than stock? This would mean that the stock driveshaft I am running has 1" less engagement into the tailshaft?
#19
Supreme Member
iTrader: (4)
Join Date: Mar 2009
Location: Pepperell, MA
Posts: 3,079
Likes: 0
Received 3 Likes
on
3 Posts
Car: 1987 Trans Am
Engine: LQ9/L92
Transmission: 4L60E
Re: driveshaft for LS1 swap
This thread has been fermenting in the back of my mind. I am seeking some clarity. Since I am running BMR K-member, my engine and trans are 1" further forward than stock? This would mean that the stock driveshaft I am running has 1" less engagement into the tailshaft?
#20
Re: driveshaft for LS1 swap
Croozer
#21
Re: driveshaft for LS1 swap
Hey if you could give me a list of what all I need to get my ls1/4l60e set up to go in as factory as possible thx
#22
Member
Join Date: Dec 2014
Location: Garland, TX
Posts: 431
Likes: 0
Received 1 Like
on
1 Post
Car: 2014 Z28 #80
Re: driveshaft for LS1 swap
Didn't need to bring a thread back from the dead... especially when it doesn't relate to the topic.
Do the research, man. There are TONS of threads out there, tons of info... I spent about 2 months fully researching everything I could find.. and even after completing my build, and being in the process of redoing it again I'm still doing research.
Do the research, man. There are TONS of threads out there, tons of info... I spent about 2 months fully researching everything I could find.. and even after completing my build, and being in the process of redoing it again I'm still doing research.
#23
Re: driveshaft for LS1 swap
Did you ever come up with a fix? I’m having the same issue
Thread
Thread Starter
Forum
Replies
Last Post
ambainb
Camaros for Sale
11
04-25-2016 09:21 PM