LS to ZF
Safety Car
Joined: Jan 2006
Posts: 3,566
Likes: 4
From: Mt Laurel NJ
St. Jude Donor '06-'07
Pro
Joined: Mar 2007
Posts: 526
Likes: 1
From: San Angelo Texas
Thread Starter
Burning Brakes
Joined: Dec 2007
Posts: 1,125
Likes: 8
From: Taft TN
be glad to but it wont happen over nite. the time consuming will be running the pipes. calling APS in a few days to get sum measurements from them.
Race Director
Joined: Mar 1999
Posts: 12,586
Likes: 237
From: Bartlett Illinois
Actually if you could mock up the trans to LS block and such that is all I am really interested in, the rest is not too concerning to me
Thread Starter
Burning Brakes
Joined: Dec 2007
Posts: 1,125
Likes: 8
From: Taft TN
in or out of the car. if out all i need is the bell housing becos there is always a few ls motors at the shop. would look good behind a LS9 that is suppose to be on the way.
Race Director
Joined: Mar 1999
Posts: 12,586
Likes: 237
From: Bartlett Illinois
Does not matter, Want to see what exactly is needed for the mating and be sure everything lines up and fits right
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Thread Starter
Burning Brakes
Joined: Dec 2007
Posts: 1,125
Likes: 8
From: Taft TN
Melting Slicks
Joined: Oct 2006
Posts: 2,238
Likes: 10
From: College Station TX
That's an issue. The LS1 and all LS1 based engines (5.3, 6.0, etc) have the heads sitting a big further back in relation to the back of the engine compared to an SBC. Most have to move the trans forward a bit to clear the firewall. This is what the Speed Hound motor mount plates do.
Burning Brakes
Joined: Sep 2001
Posts: 1,013
Likes: 9
While the firewall work takes a little fiberglass and resin work, the apparent benefits are large: 1) lots of room at the front accessory area of the engine (since the LS block is shorter), 2) and no messing with the shifter location 3) no change to the torque arm mounting, and 4) no custom driveshaft is required. If I do the swap, I am going to do it this way.
Last edited by Mr6spd; Oct 1, 2008 at 11:37 PM.
Drifting
Joined: Nov 1999
Posts: 1,801
Likes: 2
From: St. Paul MN
Anymore movement on this conversion? I'd like to keep this thread alive since my son and I are making plans to do an LS-X swap into his ZF equipped '87. The bell housing looks like a great find. Would the slave cylinder be the same as on the ZF? Or could it be changed to a C5/C6 type ram (I think that's what they're called) slave? Would there be a benefit to changing that to a ram type? Also, would the clutch and flywheel from the L98 fit the LS-X? I think these questions are still relevant to the original topic here.
Drifting
Joined: Oct 2004
Posts: 1,477
Likes: 80
From: Hawaii
Take a look at ZF Doc's cool project.
http://www.zfdoc.com/projects.htm
Adapter plate for the LS bellhousing, but has to use the ZR1 input shaft.
http://www.zfdoc.com/projects.htm
Adapter plate for the LS bellhousing, but has to use the ZR1 input shaft.
Thread Starter
Burning Brakes
Joined: Dec 2007
Posts: 1,125
Likes: 8
From: Taft TN
Take a look at ZF Doc's cool project.
http://www.zfdoc.com/projects.htm
Adapter plate for the LS bellhousing, but has to use the ZR1 input shaft.
http://www.zfdoc.com/projects.htm
Adapter plate for the LS bellhousing, but has to use the ZR1 input shaft.
he did sum what what i was thinking. but i was using a classis LS BH and making a adaptor in front of the trans so i could make the adaptor wider to use the factory c4 cultch setup. the Quick Time bell housing is about .200 shorter than the zf BH.
Race Director
Joined: Mar 1999
Posts: 12,586
Likes: 237
From: Bartlett Illinois
yeah which works for the Standard ZF trans.. Remember, ZFDoc is using an LT5 specific ZF trans
Melting Slicks
Joined: Oct 2006
Posts: 2,238
Likes: 10
From: College Station TX
I'm not 100% sure, since I don't think anyone has tried this exact combo, but I do know the Speedhoud mounts move the engine up to clear the firewall.
Thread Starter
Burning Brakes
Joined: Dec 2007
Posts: 1,125
Likes: 8
From: Taft TN
I am not sure!! I plan on using different mounts. but the back of the LS and L98 motors are so much different. i think i measured and it was like almost 2 inches different where the heads sit. I was hoping sum one else had bit the bullet and bought one by now. I am just waiting on TAXES and I'm goin shopping.