LT1 GenV swap

[toddoky]

Originally Posted by 87chevy.com

Did it keep the vacuum pump? Hope so.. can't wait to get my ls-lt water pump adapters in and offer the rest up for sale ..only 4 though.
Can't find anything linking a lt1 to a ls fead setup but it looks like it would or could clear a vacuum pump.

No, the vacuum pump was not retained as it won't physically fit in most LS swap applications. The pump is only used in truck applications to augment the vacuum signal when the engine is operating in cylinder deactivation mode, so if will not be needed by someone that is not interested in utilizing that function in their swap.

[87chevy.com]

Originally Posted by toddoky

No, the vacuum pump was not retained as it won't physically fit in most LS swap applications. The pump is only used in truck applications to augment the vacuum signal when the engine is operating in cylinder deactivation mode, so if will not be needed by someone that is not interested in utilizing that function in their swap.

Good to now .. wonder where they are drilling and taping the hole for vacuum. Be interesting to see the holley setup.

[87chevy.com]

Originally Posted by 87chevy.com

added a pic of the adapter



The other hole is also misaligned... again close enough, but no cigar.

Feeling relieved!





CNC ported FTW


Can barley tell there's a transition from the adapter to the engine block ports!


Mmm 4 sets for sale.


Gonna source some m8x120 bolts and mock it up but it's exactly how thick I wanted it
Clint

[cornerstone]

Looks great Clint.... nice work.👍🏼

[87chevy.com]

Installed



.06" gap with no gaskets installed. Add the 2 gaskets add another .070".. Plenty.. the Dirty Dingo adapters were thicker and the belt was a pretty close to the edge of the pulley, it would work but these are as close as I wanted it to get, which will put the belt more centered/away from the edge of the pulley.

[87chevy.com]

Originally Posted by toddoky

I thought I'd let you guys know that Holley will soon be releasing an LT FEAD system as well and it is based on the use of an LS water pump and uses the existing Holley LS alternator/PS pump components/brackets also. It was previewed at LS Fest last weekend and I can post a photo of it next week if you guys want to get a look at it.

Got a reply from Holley today, there is no LT accessory drive at this time..just want to keep the thread up to date.

[toddoky]

Originally Posted by 87chevy.com

Got a reply from Holley today, there is no LT accessory drive at this time..just want to keep the thread up to date.

Yes that's correct, the Holley LT accessory drives are in development at the moment and not yet available.

[87chevy.com]

Originally Posted by toddoky

I thought I'd let you guys know that Holley will soon be releasing an LT FEAD system as well and it is based on the use of an LS water pump and uses the existing Holley LS alternator/PS pump components/brackets also. It was previewed at LS Fest last weekend and I can post a photo of it next week if you guys want to get a look at it.

Are you allowed to post the picture? I think I read you work at holley correct?

[87chevy.com]

If anyone's interested 140 shipped for a pair of adapters, no bolts or hardware.. not planning on a 2nd order at this time so 4 sets is all I will have to sell. These also don't have a npt port on the passenger side like the DD ones. I chose not to have it made into it since not everyone, myself included wants it. Plus, npt taped holes are sealed with the threads and Teflon and can done by anyone with one hand and one eye and minimal tools which if your doing this swap you have .. hopefully...
Clint

[toddoky]

Originally Posted by 87chevy.com

Are you allowed to post the picture? I think I read you work at holley correct?

Sure, I can post a photo; I was waiting to get access to the engine to be able to take one. Yes, I am the design engineer at Holley who is responsible for the development of all the Hooker LS engine swap system mounting and exhaust components.[IMG][/IMG]

[87chevy.com]

Thanks for the picture. What's the solution to a vacuum source? Drilling and tapping the truck manifold or electric pump? Will there be other fead setups or just this one pictured.
Thanks Tod,
Clint

[toddoky]

Originally Posted by 87chevy.com

Thanks for the picture. What's the solution to a vacuum source? Drilling and tapping the truck manifold or electric pump? Will there be other fead setups or just this one pictured.
Thanks Tod,
Clint

I'll have to check on the answer to your vacuum source question. I think this system will be it for the LT1 engines and we are working on a different system for the supercharged LT4 engines as well for release next year.

[cornerstone]

I spoke with the VP of sales and marketing, Wayne Powell, from Kwik Performance today at the good guys show at Texas motor Speedway. They have an A/C and alt. bracket set up that comes with a type 2 power steering pump that works with the factory L83 truck water pump, leaving the vacuum pump in its factory location. I think He told me it is $535 or so shipped to your door. You still would need to provide your own reservoir for the power steering pump. Sorry for the sideways photo.

[cornerstone]

Btw Wayne with Kwik was very knowledgeable and ready to do business.
Brian

[87chevy.com]

Originally Posted by cornerstone

I spoke with the VP of sales and marketing, Wayne Powell, from Kwik Performance today at the good guys show at Texas motor Speedway. They have an A/C and alt. bracket set up that comes with a type 2 power steering pump that works with the factory L83 truck water pump, leaving the vacuum pump in its factory location. I think He told me it is $535 or so shipped to your door. You still would need to provide your own reservoir for the power steering pump. Sorry for the sideways photo.

Thanks, but that looks silly to be honest. I'll post up a pictire of the adapters I'll be making.. simple and pleasing to look at
Clint

[cornerstone]

Hahaha! Its funny how asthetics are as important as function. Im with ya... Are you going to make extras to sell on those also? I liked the KWIK setup because the PS pump is low and looked simple to plumb, a short distance to the gearbox.

[87chevy.com]

Originally Posted by toddoky

Sure, I can post a photo; I was waiting to get access to the engine to be able to take one. Yes, I am the design engineer at Holley who is responsible for the development of all the Hooker LS engine swap system mounting and exhaust components.[IMG][/IMG]

Looks like the brackets were reused from the ls fead... are the head bolt layout the same? I'm still puzzled why they decided to move the alt to the driver side, it would require a separate harness to extend from the original location to the new.
Clint

[Hart_Rod]

Originally Posted by toddoky

I'll have to check on the answer to your vacuum source question. I think this system will be it for the LT1 engines and we are working on a different system for the supercharged LT4 engines as well for release next year.

Here's a bracket I made to work with the TVS1900 I put on my engine with the Holley brackets:

[toddoky]

Originally Posted by 87chevy.com

Looks like the brackets were reused from the ls fead... are the head bolt layout the same? I'm still puzzled why they decided to move the alt to the driver side, it would require a separate harness to extend from the original location to the new.
Clint

That's a good observation on your part, the brackets are the exact same ones used in the Holley LS FEAD drive set-up, which are adapted to the bolt pattern of the LT engine by means of the adapters in-between them both. This configuration was beneficial in keeping cost in check so that pricing will close to what the LS set-up is. The alternator position won't be preferable by everyone, especially those using a stock take-out ECU and wiring harness. For those going with an aftermarket EFI system like those from Holley, then the connections needed are just as easily made as if the alternator was mounted elsewhere. I know our beloved GM trucks are the focus of this forum, but there are many more applications Holley makes swap parts for that require configurations or designs that are not necessarily optimized for our trucks.

[87chevy.com]

Originally Posted by toddoky

That's a good observation on your part, the brackets are the exact same ones used in the Holley LS FEAD drive set-up, which are adapted to the bolt pattern of the LT engine by means of the adapters in-between them both. This configuration was beneficial in keeping cost in check so that pricing will close to what the LS set-up is. The alternator position won't be preferable by everyone, especially those using a stock take-out ECU and wiring harness. For those going with an aftermarket EFI system like those from Holley, then the connections needed are just as easily made as if the alternator was mounted elsewhere. I know our beloved GM trucks are the focus of this forum, but there are many more applications Holley makes swap parts for that require configurations or designs that are not necessarily optimized for our trucks.

Of course, I'm a master tech for BMW and one thing I know is you can't please everyone.. but appreciate the support holley is offering though

Does the holley brackets fit a stock lt1 alternator?

This is basically what it is.. it woukd use the captors alternator and tensioner... gonna need to put the intake on it, but it should be 0 problems with that, and ad far as hood clearance, it's only raised maybe 1-2 inches... if the intake is higher than the alt, no problems

[toddoky]

Originally Posted by 87chevy.com

Of course, I'm a master tech for BMW and one thing I know is you can't please everyone.. but appreciate the support holley is offering though

Does the holley brackets fit a stock lt1 alternator?

This is basically what it is.. it woukd use the captors alternator and tensioner... gonna need to put the intake on it, but it should be 0 problems with that, and ad far as hood clearance, it's only raised maybe 1-2 inches... if the intake is higher than the alt, no problems

I'll have to find out for you as I'm merely the information middle man on these components.

[87chevy.com]

Minor parts
Oil cooler bypass cover just incase the oil cooler manifold doesn't fit.

[87chevy.com]

And the long awaited fuel pump driver module connector.. brought 2nd one to use for one additional harness



Besides the belt drive that's almost worked out and motor mount adapters I think I'll be ready for the swap.

[toddoky]

87Chevy.com, the Holley alternator bracket will accept the LV3/L83/L83 truck alternator, but not the LT1/LT4 alternator. This is due to the mounting hole spacing difference between them.

[87chevy.com]

Originally Posted by toddoky

87Chevy.com, the Holley alternator bracket will accept the LV3/L83/L83 truck alternator, but not the LT1/LT4 alternator. This is due to the mounting hole spacing difference between them.

Cool, thanks for the details.
Clint