HOW TO DO AN ADVANCED SEARCH.

Mon Jul 08, 2013 3:56 pm by Admin


For the benefit of 944Hybrids users there are two search functions available for you to use.
The purpose of this sticky is to explain the "Advanced Search" function because it is much more powerful and is the best choice when researching information.

When you log on to the site a list of options is shown in a line at the top of the page. One option is labelled "Search", use this option (NOT the search box lower down on the right).

After you click on the upper search option, a drop down box appears. At the bottom of this box is a radio button marked "Advanced …

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Hood Clearance issue?

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Hood Clearance issue?

Post  superman22x on Sat May 07, 2016 5:46 pm

Dropped the engine in today. Engine mounts are all bolted solid. Engine seems to be sitting a bit high. I need to add in the 1/2" crossmember spacers still, that will allow the bell housing to line up I think. But it seems to me that the throttle body is more than 2" too high. Did I install something wrong? I don't think the engine can get any closer to the cross member.

This is an LS6 intake with 3 bolt to 4 bolt TB plate, and a truck DBW throttle body. Maybe the car TBs are different?

Ignore the fuel crossover line, that will be fixed. Cheap ebay one that it came with is too long.
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Re: Hood Clearance issue?

Post  majormojo on Sat May 07, 2016 8:54 pm

I had the same issue. Also using the truck DBW TB. Solved it by flipping it over. I had to do a tiny bit of grinding on the tb servo housing and on the water pump to get it to fit but it wasn't difficult.
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Re: Hood Clearance issue?

Post  superman22x on Sat May 07, 2016 9:06 pm

Ok, great, simple enough. I'll do that.

I put the 1/2" spacers in now. Still can't get the bell housing to align. Seems like the torque tube is hitting something before it lifts up high enough. All the exhaust brackets are still on it, so maybe it's one of those.

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Re: Hood Clearance issue?

Post  superman22x on Sun May 08, 2016 10:55 am

majormojo wrote:I had the same issue. Also using the truck DBW TB. Solved it by flipping it over. I had to do a tiny bit of grinding on the tb servo housing and on the water pump to get it to fit but it wasn't difficult.

Do you have any pictures of the throttle body?

Looks like the casting around the stepper motor in mine touches even the water pump pulley. So I don't think flipping it will work for me... I might have to buy a car TB. It would be nice to have a 90* right out of the intake before the TB.

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Re: Hood Clearance issue?

Post  majormojo on Tue May 10, 2016 11:14 am

This is the only pic I have after flipping the TB. I can take a closer photo if it would be helpful. I'm using a truck motor with OE water pump.

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Re: Hood Clearance issue?

Post  superman22x on Wed May 11, 2016 2:54 pm

Ah, the different intake and water pump must be what allow the clearance in your case. Is that an LS3 intake?

I have an LS6 intake and GTO water pump. I'm planning to get an LS3 Throttle body, then I shouldn't have issues.

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Re: Hood Clearance issue?

Post  majormojo on Wed May 11, 2016 2:56 pm

Yes that's right, I'm using an LS3 intake.
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Re: Hood Clearance issue?

Post  erioshi on Thu May 12, 2016 12:03 am

superman22x wrote:Ah, the different intake and water pump must be what allow the clearance in your case. Is that an LS3 intake?

I have an LS6 intake and GTO water pump. I'm planning to get an LS3 Throttle body, then I shouldn't have issues.
Does the LS3 use a 3 bolt or 4 bolt throttle body? I know one of the generational differences in the intake to throttle body connection was a change from the early 3 bolt pattern (LS1/LS6/early trucks) to a 4 bolt pattern for later versions. The two combinations cannot be mixed and matched.

Also if the truck DBW throttle body is too tall, then I may end up needing to replace both my computer and throttle body with parts designed to be used with the cable throttle. Unless GM perhaps made a low profile DBW 3 bolt throttle body that is also compatible with my pedal module and ECU. That said, until the engine and related parts are sitting in the car, I'm not going to worry about it.
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Re: Hood Clearance issue?

Post  superman22x on Thu May 12, 2016 6:32 am

LS3 is a gen IV intake, and all gen IV TBs are 4 bolt. LS6 is a 3 bolt, and smaller diameter. All Gen III TBs are 3 bolt. I have an aluminum adapter plate to go from a 4 bolt TB to a 3 bolt manifold.

What ECM are you running? If it's a gen IV engine, you can't run a DBC TB as far as I know. The LS3 gen IV DBW TB has the motor on the side instead of the top, so it should work better. I'll post a picture tonight when I pick it up.

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Re: Hood Clearance issue?

Post  kevin924kevin on Thu May 12, 2016 8:19 am

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Re: Hood Clearance issue?

Post  erioshi on Fri May 13, 2016 10:55 am

Soperman, I didn't realize you had an adapter.

Both my intake and TB are three bolt, and my TB is DBW, as are my ECU and PCM. Unfortunately my ECM is not one that can be changed from DBW to cable; I've opened it up and checked for the appropriate chip. Like I said, at this point I'll sort it all out once I've got the engine sitting in the car.
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Re: Hood Clearance issue?

Post  superman22x on Fri May 13, 2016 9:07 pm

Oh, ok. You are using a Gen 3 controller then? The early DBW throttle body might fit different than mine.

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Re: Hood Clearance issue?

Post  superman22x on Thu Jun 02, 2016 10:49 am

As an additional update, that is related. I removed the reservoir from my power steering pump, and put in a 1/4" NPT Bung. I actually just JBWelded this in place, since I didn't want to weld on the pump. My plan is to run a NPT to hose barb fitting from here to the stock 944 PS reservoir (my car will not see any track time). This allows more clearance in front of the head to run the intake piping over to the driver's side fender. If you were using the vehicle for anything else, you might want a bigger reservoir. Otherwise, I think this should work ok. Thoughts?

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Re: Hood Clearance issue?

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