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Finally: Holley to produce LT and True Dual System
LTX and LSXPutting LT1s, LS1s, and their variants into Third Gens is becoming more popular. This board is for those who are doing and have done the swaps so they can discuss all of their technical aspects including repairs, swap info, and performance upgrades.
Maybe I'm misunderstanding something here... If using the Holley engine mounts & transmission mount with LS is requires customer length driveshaft etc, as it moves everything forward *?"... Why does this work with LT? or is it still custom shaft situation?
Re: Finally: Holley to produce LT and True Dual System
Originally Posted by BADNBLK
Maybe I'm misunderstanding something here... If using the Holley engine mounts & transmission mount with LS is requires customer length driveshaft etc, as it moves everything forward 1"... Why does this work with LT? or is it still custom shaft situation?
Trans mount is adjustable and appears to work with other mounts and applications. Someone mounted the headers and test fitted with Spohn LS swap mounts and they appear to fit as well.
If you use the Holley motor mounts it puts the whole set up further forward and requires a longer drive shaft, supposedly?
Re: Finally: Holley to produce LT and True Dual System
Originally Posted by grngryoutmyway
Trans mount is adjustable and appears to work with other mounts and applications. Someone mounted the headers and test fitted with Spohn LS swap mounts and they appear to fit as well.
If you use the Holley motor mounts it puts the whole set up further forward and requires a longer drive shaft, supposedly?
From the pics holley has supplied the I don't believe it is adjustable where the transmission placement is. I believe "adjustment" comes from the adapter plates for the various transmissions it can be used in conjuction with.
The person that used the headers with spohn mounts didn't have a trans crossmember yet as this is the missing link most people have not received yet.
I'm just wondering if it moves the LS trans, forward enough for shifter to go through factory shifter location, would it not move the LT forward as well? I need someone with crayons, that is really good with pictures stat! haha
Re: Finally: Holley to produce LT and True Dual System
I have the headers and the exhaust kit is on order. My concern is that I want to get a bmr tubular k member and that won't work if the trans crossmember moves everything forward.
It doesn't seem very logical yo move the engine forward either as far as performance goes.
Re: Finally: Holley to produce LT and True Dual System
Originally Posted by BADNBLK
From the pics holley has supplied the I don't believe it is adjustable where the transmission placement is. I believe "adjustment" comes from the adapter plates for the various transmissions it can be used in conjuction with.
The person that used the headers with spohn mounts didn't have a trans crossmember yet as this is the missing link most people have not received yet.
I'm just wondering if it moves the LS trans, forward enough for shifter to go through factory shifter location, would it not move the LT forward as well? I need someone with crayons, that is really good with pictures stat! haha
The way I understand it is their motor mounts shift the stuff forward and the trans cross member works with their motor relocation mounts. With them being able to mount the cross member to the LT is making people think it works with other applications/motor mounts. However you are correct no one outside of Holley has gotten the cross member yet so who knows. There is definitely some adjustablility in where the trans mount bolts up to the crossmember as seen in the picture below. I know even stock changing the trans mounts you are able to move it around a bit. The PDF for the crossmember shows different adapters for the autos, but appears that a T56 mounts right up? Still some questions and will probably be a bit until everyone knows for sure.
Worst case scenario I have some grinding burrs and a big pry bar
Last edited by grngryoutmyway; Jan 14, 2016 at 12:40 PM.
Re: Finally: Holley to produce LT and True Dual System
Originally Posted by grngryoutmyway
The way I understand it is their motor mounts shift the stuff forward and the trans cross member works with their motor relocation mounts. With them being able to mount the cross member to the LT is making people think it works with other applications/motor mounts. However you are correct no one outside of Holley has gotten the cross member yet so who knows. There is definitely some adjustablility in where the trans mount bolts up to the crossmember as seen in the picture below. I know even stock changing the trans mounts you are able to move it around a bit. The PDF for the crossmember shows different adapters for the autos, but appears that a T56 mounts right up? Still some questions and will probably be a bit until everyone knows for sure.
Guess it all depends on which side of those small adjustments the t56 lands at this point haha. I'm sure some creative people out there could "adjust" the adjustable mount to move it. Seems like that might be a good idea to avoid custom length driveshafts.
It will be really interesting to see if this mount can be used with other mounts as we have seen the headers will work. It will sure make these trans mounts and headers much more desirable, especially to guys with tubular k-members.
Re: Finally: Holley to produce LT and True Dual System
Originally Posted by BADNBLK
Guess it all depends on which side of those small adjustments the t56 lands at this point haha. I'm sure some creative people out there could "adjust" the adjustable mount to move it. Seems like that might be a good idea to avoid custom length driveshafts.
It will be really interesting to see if this mount can be used with other mounts as we have seen the headers will work. It will sure make these trans mounts and headers much more desirable, especially to guys with tubular k-members.
Just use different motor mount adapters like Hawks or Spohn etc.. The whole idea with their system was you buy all the Holley stuff and the Holley Oil Pan and you don't have to cut the K member. Everyone was giving them flack on LS1T for that choice. I think we all got over the K member fabbing a while back, but it looks like it will works anyways so now everyone is happy.
Haven't seen anything on tubular k members but I don't see how it wouldn't work with even more room.
Re: Finally: Holley to produce LT and True Dual System
Hey guys. I just finished getting caught up on latest responses on this thread and thought It would be helpful to make an official technical post to clear up some of the confusion/assumptions surrounding the new Hooker 3rd-gen transmission cross member and dual exhaust system. These highlights should make things more clear to anyone reading.
1.) Both the crossmember and the exhaust system were initially developed as part of the Hooker LS swap system of parts for this vehicle application. These components and the related LS swap headers and engine mounting brackets were all developed at the same time to work as a bolt-in package with the Holley 302-2 oil pan, or any other pan that will install within the same fitment envelope.
2.) The engine/trans mating plane was moved forward in the car slightly to accommodate all transmissions we elected to provide installation of with the Hooker trans crossmember, which is the TH400, 2004R, 4L60-4L70, 4L80/4L85, 4th-gen F-body T56 and T56 Magnum. Of all these transmissions, only the T56 and T56 Magnum are installed directly on the crossmember; the other transmissions install using available adapter plates, or a spacer block between the crossmember and the trans mount (2004R and TH400).
As a side benefit, the slight forward nudge of the eng/trans mating plane also provides sorely needed clearance at the A/C evaporator case for those wanting to retain that factory piece in their car build. The engine was not moved forward an inch as I have read in this post...the eng/trans mating plane was moved slightly for the reasons stated above and the engine was placed according to that position.
For those not aware, the LS engine block is 1" shorter than a SB Chevy, so if you moved the eng/transmission mating plane forward 1" the front of the LS engine would be at the same location that the front of the original SB engine was in the car. As located with the Hooker LS swap mounting components, the front of the LS engine is set back from where the front of the SB Chevy lies in the car.
3.) In addition to its usage in an LS swap application, the transmission crossmember can be used directly to swap an LT1 T56 into a 3rd-gen behind a SB Chevy. This is possible because the location of the trans mount pad from the bellhousing mating face is 5/8" further forward on an LT1 T56 than it is on an LS T56...don't get caught up in the math, just understand that it all works our to our benefit and yours if you happen to be running, or are interested in running that eng/trans combination. With that said, the optional brackets used to mount the other transmissions in the LS swap applications are worthless in being able to mount any of those same transmissions behind a stock SB due to the mount location discrepancy between the LT1 T56 and LS T56 transmissions.
4.) The dual exhaust can be modified to connect to any set of headers as a posting member on this forum has shown to good effect. I did the same thing on the IROC test vehicle I had and adapted the Hooker dual exhaust system to a set of 2210's that were already on the car in about 4 hours. For those choosing to use the Hooker trans crossmember in a SB/T56 swap, you will be able to obtain the highest exhaust ground clearance achievable in these cars.
5.) These components aren't intended to please ever 3rd-gen owner out there and are specifically intended for those that have an appreciation for components that provide a balance of optimized fitment, power production, superior ground clearance and build quality. I don't check in here often, but I'll subscribe to this thread for a couple of weeks to hopefully be able to give you a direct answer any questions you might have about these components/systems.
6.) The crossmember does not include the torque arm bushing, it is a user-supplied part.
Re: Finally: Holley to produce LT and True Dual System
Originally Posted by toddoky
3.) In addition to its usage in an LS swap application, the transmission crossmember can be used directly to swap an LT1 T56 into a 3rd-gen behind a SB Chevy. This is possible because the location of the trans mount pad from the bellhousing mating face is 5/8" further forward on an LT1 T56 than it is on an LS T56...don't get caught up in the math, just understand that it all works our to our benefit and yours if you happen to be running, or are interested in running that eng/trans combination. With that said, the optional brackets used to mount the other transmissions in the LS swap applications are worthless in being able to mount any of those same transmissions behind a stock SB due to the mount location discrepancy between the LT1 T56 and LS T56 transmissions.
That was the crayon picture I needed lol! Thanks for jumping in here! Kick those boys in production in the rear, so we can see more installed pics
Re: Finally: Holley to produce LT and True Dual System
Originally Posted by five7kid
Thanks for jumping in! I know your time is limited, so I appreciate you giving us some of it here.
I'm probably a year or more from taking on upgrades to my 3rd gen LS swap, but I will certainly keep this in mind as I lay out my plans.
No problem, I like being helpful when possible. I don't mind guys having a preference for products from other manufacturers, but It drives me nuts to see comparisons made on assumptions and/or non-factual information. Hopefully I can make a couple posts here in this thread and give all the relative information needed to make an informed decision/comparison.
Re: Finally: Holley to produce LT and True Dual System
Originally Posted by BADNBLK
That was the crayon picture I needed lol! Thanks for jumping in here! Kick those boys in production in the rear, so we can see more installed pics
Glad to pop in...I tried to post some pics of the install I did for everyone's benefit but was unsuccessful; it's probable due to only having a single post. If anyone wants them, I can probably get them to you through a PM if you want to send me one.
Re: Finally: Holley to produce LT and True Dual System
Into month 4 waiting on this crossmember. Ordered on 10/13/15. Original availability date was 12/4/15. They were supposedly ready for powdercoat on 1/4/16. Hope to get it sometime soon.
Re: Finally: Holley to produce LT and True Dual System
Originally Posted by Ed86TA
Into month 4 waiting on this crossmember. Ordered on 10/13/15. Original availability date was 12/4/15. They were supposedly ready for powdercoat on 1/4/16. Hope to get it sometime soon.
The first production run hit the shelf this past Monday, so one of them is more than likely on its way to you.
Re: Finally: Holley to produce LT and True Dual System
Sound check done on the set up? A video would be great!
I have the dynomax (similar to LM1), sounds awesome at everything but decel if I'm in gear, planning to do my own 2.5" dual system, likely with super 10s in the same location hooker has theirs mounted.
Re: Finally: Holley to produce LT and True Dual System
Originally Posted by WTR388
Sound check done on the set up? A video would be great!
I have the dynomax (similar to LM1), sounds awesome at everything but decel if I'm in gear, planning to do my own 2.5" dual system, likely with super 10s in the same location hooker has theirs mounted.
I plan to get some video and sound clips of the 3rd-gen I recently installed the Hooker dual exhaust system on that was adapted to a set of Hooker 2210HKR headers that were on the car. As soon as the weather cooperates, I'll make it happen.
Re: Finally: Holley to produce LT and True Dual System
Originally Posted by toddoky
The first production run hit the shelf this past Monday, so one of them is more than likely on its way to you.
Got the crossmember today. Looks like good quality. Inventoried the parts in the box. Oh my f#$k'n God. Incomplete. The welded nut plates were not in the box. Contacted Holley customer service, they wanted me to return it. Damn good thing I can fabricate these myself. This is pathetic.
Re: Finally: Holley to produce LT and True Dual System
I thought the SB/LT1 T56 users might benefit from seeing the results of recent install I did of the Hooker 3rd-gen transmission crossmember and dual exhaust system on a Holley employee's IROC.
The LT1 T56 swap had been performed quite a few years ago using a Skulte crossmember, so I began the job by installing the Hooker crossmember and transferring the mounting of the torque arm from the back of the transmission to the Hooker crossmember.
I next installed the Hooker dual exhaust system from the crossover back and then fabricated custom inlet pipes to connect it to the collectors of the Hooker 2210HKR headers that have been on the car for a couple of years.
The exhaust system no longer drags on the ground when he pulls the car into the garage as it did with the Skulte crossmember and previous exhaust set-up.
I've not been able to post photos on this forum for some reason, so if one of you wants to put them up, PM me your email address and I'll forward them to you.
Re: Finally: Holley to produce LT and True Dual System
Originally Posted by Ed86TA
Got the crossmember today. Looks like good quality. Inventoried the parts in the box. Oh my f#$k'n God. Incomplete. The welded nut plates were not in the box. Contacted Holley customer service, they wanted me to return it. Damn good thing I can fabricate these myself. This is pathetic.
Sorry to hear about you being inconvenienced with the missing parts in the box. The possibility of things of that nature happening are greater when things are new and the folks on the packaging area are not used to boxing them. It happens infrequently, but I understand how annoying it can be when it does.
Re: Finally: Holley to produce LT and True Dual System
Originally Posted by Ed86TA
Got the crossmember today. Looks like good quality. Inventoried the parts in the box. Oh my f#$k'n God. Incomplete. The welded nut plates were not in the box. Contacted Holley customer service, they wanted me to return it. Damn good thing I can fabricate these myself. This is pathetic.
I got the crossmember in today as well. The quality of this thing surpassed my expectations! However It looks like I'm missing the welded nut plates as well unfortunately. Is there anything you can do about this toddoky?
Re: Finally: Holley to produce LT and True Dual System
Originally Posted by toddoky
I've not been able to post photos on this forum for some reason, so if one of you wants to put them up, PM me your email address and I'll forward them to you.
Re: Finally: Holley to produce LT and True Dual System
Originally Posted by Alice89
I got the crossmember in today as well. The quality of this thing surpassed my expectations! However It looks like I'm missing the welded nut plates as well unfortunately. Is there anything you can do about this toddoky?
I'm sure all of the units that got shipped in the first batch are missing those parts, so corrective action will have to be taken by Holley tech service for those who call in...my apologies to you as well from Holley.
Re: Finally: Holley to produce LT and True Dual System
Originally Posted by toddoky
I thought the SB/LT1 T56 users might benefit from seeing the results of recent install I did of the Hooker 3rd-gen transmission crossmember and dual exhaust system on a Holley employee's IROC.
The LT1 T56 swap had been performed quite a few years ago using a Skulte crossmember, so I began the job by installing the Hooker crossmember and transferring the mounting of the torque arm from the back of the transmission to the Hooker crossmember.
I next installed the Hooker dual exhaust system from the crossover back and then fabricated custom inlet pipes to connect it to the collectors of the Hooker 2210HKR headers that have been on the car for a couple of years.
The exhaust system no longer drags on the ground when he pulls the car into the garage as it did with the Skulte crossmember and previous exhaust set-up.
I've not been able to post photos on this forum for some reason, so if one of you wants to put them up, PM me your email address and I'll forward them to you.
Re: Finally: Holley to produce LT and True Dual System
Originally Posted by toddoky
I'm sure all of the units that got shipped in the first batch are missing those parts, so corrective action will have to be taken by Holley tech service for those who call in...my apologies to you as well from Holley.
Too bad, I'll call them later. Hopefully they can send me my a set...
Re: Finally: Holley to produce LT and True Dual System
Thank you alice89 for posting the pics. I've investigated the cause of the missing backing plates and discovered it's not a packaging issue, but an error made by us in the Engineering department. That component somehow did not get entered on the Bill of Materials when the crossmember package contents were entered into our system, so they never got ordered from the supplier; I'm loading the CAD file for the plate into our water jet and will cut them out tonight and weld the nuts on them in the morning to make them available ASAP. For those that have ordered one of the crossmembers and are following this thread, I will take care of sending the backing plates out to you if you wish. Again guys, sorry about the screw up.
Re: Finally: Holley to produce LT and True Dual System
Originally Posted by toddoky
I'm loading the CAD file for the plate into our water jet and will cut them out tonight and weld the nuts on them in the morning to make them available ASAP. For those that have ordered one of the crossmembers and are following this thread, I will take care of sending the backing plates out to you if you wish. Again guys, sorry about the screw up.
Re: Finally: Holley to produce LT and True Dual System
Originally Posted by toddoky
For those that have ordered one of the crossmembers and are following this thread, I will take care of sending the backing plates out to you if you wish.
What do you need from me? PM with order number for proof of purchase, or call help line and create a ticket? Or.....?
Re: Finally: Holley to produce LT and True Dual System
Originally Posted by QwkTrip
What do you need from me? PM with order number for proof of purchase, or call help line and create a ticket? Or.....?
I found out that the plates were entered into the system as separate items and have been made and delivered to our facility in Mississippi, they just missed being listed on the BOM for the crossmember hardware pack. Since I didn't have to cut them out and make them, this is more than likely just going to be a call-and-ship exercise to get you guys taken care of, I'll confirm that as being the case in the morning post up my findings here.
Re: Finally: Holley to produce LT and True Dual System
Good morning guys. I scrubbed the BOM last night before I went home and discovered you guys are short a washer in the hardware pack as well as the backing plates (you received one black oxide washer and will need two).
I've put a simple process in place with a point-man on our Tech Service team to receive your information and send out the missing components to anyone on this forum who's received one of the crossmembers.
Just send me a PM request to begin the process and I'll PM you the email address you'll need to take care of the issue as quickly as possible. It shouldn't be more than a couple of days for you to receive the parts and you can install the crossmember before receiving them and put them in as a last step if you are held up on your project.
Re: Finally: Holley to produce LT and True Dual System
Originally Posted by crazynights
Would like to see what is involved to get these to mount to the 2210.
Also, anyone with a sound clip?
You would basically have to replicate what I did and what is depicted in the under car photos above. You have to use a couple of U-bends and cut them up to acquire the specific bends you need and then weld all the parts together.
Re: Finally: Holley to produce LT and True Dual System
Another thing, which I've mentioned before but there are no plans yet, is for them to produce the Crossmember for more options. T350, T400, 700R4, etc.
I'm sure if there was a survey for some market research it may benefit to offer more options.
Re: Finally: Holley to produce LT and True Dual System
Originally Posted by crazynights
Another thing, which I've mentioned before but there are no plans yet, is for them to produce the Crossmember for more options. T350, T400, 700R4, etc.
I'm sure if there was a survey for some market research it may benefit to offer more options.
I will certainly mention your feedback when/if asked about input from the higher-ups here. It would be possible to install a TH400 or 700R4 behind a small block using the current crossmember by fabricating a custom cantilever bracket and also swapping out the extension housing of a 700R4 for one of the aftermarket pieces that moves the mount attachment point to the same location as found on the TH400.
That would only leave the TH350 unaddressed and there would be no way to provide the same geometric/clearance benefits in a crossmember for that transmission due to the mount location being so much further forward (i.e. no ground clearance benefit). That being the case, it wouldn't be worth doing in our opinion.
Re: Finally: Holley to produce LT and True Dual System
Thank you. I appreciate the response and the way to install the 700R4.
However, it seems I'd need to buy the crossmember and then buy more parts and fabricate to install a tranny that was avail on third gens for about 8 years.
I personally would pay for a crossmember made like the T56 for a 700R4 today if available. I'm not afraid to fab or make things work, but for me, time is hard to come by so if the unit was available that would save me fab time. Just my but I do appreciate your Company making more parts available for the third genners.
Re: Finally: Holley to produce LT and True Dual System
Originally Posted by crazynights
Thank you. I appreciate the response and the way to install the 700R4.
However, it seems I'd need to buy the crossmember and then buy more parts and fabricate to install a tranny that was avail on third gens for about 8 years.
I personally would pay for a crossmember made like the T56 for a 700R4 today if available. I'm not afraid to fab or make things work, but for me, time is hard to come by so if the unit was available that would save me fab time. Just my but I do appreciate your Company making more parts available for the third genners.
I appreciate where you're coming from. I can say for certain that a 700R4 specific crossmember won't be coming from us anytime in the foreseeable future as our development schedule for the year is fully booked. I can't say what will happen beyond that.
Re: Finally: Holley to produce LT and True Dual System
Got over the issue of the missing nut plates. Just welded a nut onto a piece of bar stock. I am sure that is probably all that it was in the first place.Not a big deal for those of us that have the ability to fabricate. I can see where it would be a problem for the bolt in guys.
Got the crossmember installed. Installing the nut plates was a bit of a pain. I tried the suggested method of using a telescopic magnet, but that did not work so well. I used a coat hanger, and a piece of electrical tape. I also went to my local hardware store and got a 3/8 stud. This worked much better than trying to use a bolt for the nut plate.
For anyone that is interested I am running a BMR tubular K frame, and a 700R4. Fabricated my own adapter, for the transmission, out of a piece of 3/8 plate stock. Simple as cutting out the plate and drilling 4 holes. I used the T56 spacer plate that came with the crossmember to lift the home made adapter plate off of the crossmember.
I have the Stainless Works headers from Hawks. The headers I have,have 2 1/2 outlet.
Started installing the pipes, but rain set in. Cut the portion of the pipes off that go from 3 to 2 1/2. All I will have to do is weld in a short section of 2 1/2 pipe and it will clamp in with no problem.
Should get it finished this weekend. Will post pics ASAP.
Re: Finally: Holley to produce LT and True Dual System
Originally Posted by Ed86TA
Got over the issue of the missing nut plates. Just welded a nut onto a piece of bar stock. I am sure that is probably all that it was in the first place.Not a big deal for those of us that have the ability to fabricate. I can see where it would be a problem for the bolt in guys.
Got the crossmember installed. Installing the nut plates was a bit of a pain. I tried the suggested method of using a telescopic magnet, but that did not work so well. I used a coat hanger, and a piece of electrical tape. I also went to my local hardware store and got a 3/8 stud. This worked much better than trying to use a bolt for the nut plate.
For anyone that is interested I am running a BMR tubular K frame, and a 700R4. Fabricated my own adapter, for the transmission, out of a piece of 3/8 plate stock. Simple as cutting out the plate and drilling 4 holes. I used the T56 spacer plate that came with the crossmember to lift the home made adapter plate off of the crossmember.
I have the Stainless Works headers from Hawks. The headers I have,have 2 1/2 outlet.
Started installing the pipes, but rain set in. Cut the portion of the pipes off that go from 3 to 2 1/2. All I will have to do is weld in a short section of 2 1/2 pipe and it will clamp in with no problem.
Should get it finished this weekend. Will post pics ASAP.
I'm glad to hear you got something worked out for the backing plates. I used a piece of TIG rod on the last crossmember install I did a couple of weeks ago, similar to what you did, and also found it to work easier than the telescoping magnet method I listed in the instructions. Due to that experience and yours to back it up, I'm going to revise the instructions;thanks for providing feedback for everyone's benefit.
Re: Finally: Holley to produce LT and True Dual System
Got the crossmember today and did a fit up. Came with a hodgepodge of mismatched bolts and nuts, and not all were the right size.
I have a T56 and this is a NO GO without the Holley engine mounts. Crossmember runs into back of transmission. Not even close to being able to bolt it up to the car. We're talking total redo of the center section to make it fit.
Other problem is the torque arm bracket hits the reverse lockout solenoid so transmission cannot be lowered into place, even if I could get the crossmember bolted up. This has nothing to do with engine mounts. Crossmember simply is not compatible with the transmission.
Re: Finally: Holley to produce LT and True Dual System
Originally Posted by QwkTrip
Other problem is the torque arm bracket hits the reverse lockout s0lenoid so transmission cannot be lowered into place,
How bad is the interference? Got any pics?
I helped a friend swap an ls1/t56 into a miata a while back; and I remember having to remove the s0lenoid/ plug the hole for better trans tunnel clearance... So i guess if worst came to worse I could just remove it. I just hate the idea of going from 5th to reverse.
toddoky, did either of the cars you installed the system on have the reverse lockout in place?