L92 Crate engine questions
Thread Starter
On The Tree
Joined: Dec 2003
Posts: 157
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From: Colorado
L92 Crate engine questions I just took delivery on a new GM l92 crate engine. Does anyone know for sure if it has a standard volume or high volume oil pump? I understand it has VVT, but no AFM. Also, if the VVT setup is left in the engine, but not supported by the engine controller, does it default to the advanced, neutral, or retarded position?
I'll be using it in an installation that needs max torque from 3000 to 5000 rpm, so probably if it goes advanced or neutral it will be fine.
I've been searching for an answer to whether or not a L76/LS3 intake can be used with the truck waterpump and accessory setup, but can't find anything. Anyone have information?
Thanks.
I'll be using it in an installation that needs max torque from 3000 to 5000 rpm, so probably if it goes advanced or neutral it will be fine.
I've been searching for an answer to whether or not a L76/LS3 intake can be used with the truck waterpump and accessory setup, but can't find anything. Anyone have information?
Thanks.
LS1Tech Sponsor
Joined: Feb 2006
Posts: 1,170
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From: Rockfield Kentucky
I am not sure about the oil pump. I converted a L92 and ran it with the supplied pump. I didn't have any problems.
The VVT will default to the advanced mode.
The L76/LS3 will hit the truck water pump. So not it won't work.
Robin
The VVT will default to the advanced mode.
The L76/LS3 will hit the truck water pump. So not it won't work.
Robin
Thread Starter
On The Tree
Joined: Dec 2003
Posts: 157
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From: Colorado
Thanks Robin. I'll be supplying a chain drive with oil from the engine is the reason I'm wondering about the pump. Not sure whether I'll need to change the intake until I can measure the height of the truck manifold. I'm hoping I can keep the whole truck setup.
I run the LS3 intake on an L92. I have the stock L92 DBW throttle body and water pump. I just had to touch up the water pump just a little. It really didnt need a lot of material removed at all.
Now if your running a cable driven throttle body youll have to cut off the bottom of the bellcrank.
Edit: here is a picture I found on another forum about the problem area....
Now if your running a cable driven throttle body youll have to cut off the bottom of the bellcrank.
Edit: here is a picture I found on another forum about the problem area....
Thread Starter
On The Tree
Joined: Dec 2003
Posts: 157
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From: Colorado
That's what I was looking for! Thanks for the info. I think life just got a little easier if I need to replace my truck intake.
I run the LS3 intake on an L92. I have the stock L92 DBW throttle body and water pump. I just had to touch up the water pump just a little. It really didnt need a lot of material removed at all.
Now if your running a cable driven throttle body youll have to cut off the bottom of the bellcrank.
Edit: here is a picture I found on another forum about the problem area....
Now if your running a cable driven throttle body youll have to cut off the bottom of the bellcrank.
Edit: here is a picture I found on another forum about the problem area....
Thread Starter
On The Tree
Joined: Dec 2003
Posts: 157
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From: Colorado
I haven't decided. I don't need anything over 5000 rpm, since the engine will never see anything over that. I'll investigate when the time comes and see what the options are. Right now, from the dyno comparisons I've seen, there's not a lot of difference (with or without VVT) as long as the rpm is below 4500-5000 . Believe it or not, I'm considering using LQ4 heads and intake if it bumps the torque curve up below 5000. Probably won't do it, but the thought has crossed my mind, since I already have a new LQ4 long block and could probably sell the left over parts.
If it becomes fairly easy to put together a stand alone harness/PCM that keeps the VVT, I'll just use it as is or possibly replace the cam with a better VVT grind. Maybe GMPP will come through.
If it becomes fairly easy to put together a stand alone harness/PCM that keeps the VVT, I'll just use it as is or possibly replace the cam with a better VVT grind. Maybe GMPP will come through.
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If you go with the L76/LS3 intake the car DBW throttle body will not clear the truck water pump. If you decide to try and use a car water pump you will not be able to keep the VVT because the timing cover is too tall and won't clear the water pump. I used the stock truck accessories and the L76 intake and DBW throttle body by welding additional tubing on the water pump neck and dimpling it to clear the throttle body.
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FormerVendor
Joined: Mar 2007
Posts: 182
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From: Nacogdoches, TX
I just took delivery on a new GM l92 crate engine. Does anyone know for sure if it has a standard volume or high volume oil pump? I understand it has VVT, but no AFM. Also, if the VVT setup is left in the engine, but not supported by the engine controller, does it default to the advanced, neutral, or retarded position?
I'll be using it in an installation that needs max torque from 3000 to 5000 rpm, so probably if it goes advanced or neutral it will be fine.
I've been searching for an answer to whether or not a L76/LS3 intake can be used with the truck waterpump and accessory setup, but can't find anything. Anyone have information?
Thanks.
I'll be using it in an installation that needs max torque from 3000 to 5000 rpm, so probably if it goes advanced or neutral it will be fine.
I've been searching for an answer to whether or not a L76/LS3 intake can be used with the truck waterpump and accessory setup, but can't find anything. Anyone have information?
Thanks.
The cam phaser will go to 7 degrees advanced when not plugged in. The cam should be in a retarded position for higher output at 5000 RPM. When we use our M-90 VVT controller, we are normally around approximately 10 degrees at that operating point.
The LS3/L76 intake won't work with a truck water pump, but we do have a spacer kit that will allow you to run the F-Body accessories on a VVT setup.
