Compact DBW TB
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On The Tree
Joined: Feb 2020
Posts: 180
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Compact DBW TB I have a 3 bolt DBW TB on my LM7 swapped Porsche 944. When I built the car I put a 4” cowl scoop on it to clear the TB and Intake. Well I’d like to go back to a stock hood. I’ve considered making an elbow for between the intake and TB which honestly would most likely solve my problem. It would have to be a “carb hat” tight radius 90. Not good for power, but I’m ok with that.
Another thought would be to locate a tb that’s more compact. I was wondering if any of the aftermarket TBs or even different oem ones have a smaller build? I’m using the stock PCM and TAC all done with pcm hammer and tuner pro. I did just pick up hp tuners if that would open up any options for me?
Any help would be greatly appreciated!
Another thought would be to locate a tb that’s more compact. I was wondering if any of the aftermarket TBs or even different oem ones have a smaller build? I’m using the stock PCM and TAC all done with pcm hammer and tuner pro. I did just pick up hp tuners if that would open up any options for me?
Any help would be greatly appreciated!
Thread Starter
On The Tree
Joined: Feb 2020
Posts: 180
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Also I sketched the TB before the MAF 🤦♂️ It was too early for my brain to work right.
TECH Fanatic
Joined: Jul 2007
Posts: 1,802
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From: Wilmington, De
The 4-bolt TBs are much more compact, but you will need to switch to an intake with a 4-bolt flange, or if that is an LS6 intake, have TPIS modify it with a 90mm snout.
I did an LT1, but this shows you how I routed my intake. I reduced the diameter from 4" to 3.5".
I did an LT1, but this shows you how I routed my intake. I reduced the diameter from 4" to 3.5".
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TECH Fanatic
Joined: Jul 2007
Posts: 1,802
Likes: 332
From: Wilmington, De
I have the stock hood, but I had to cut some of the ribbing out in the middle towards the front. I made some spacers to space the crossmember and caster blocks down. I think I did 1/2" or 3/4".
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On The Tree
Joined: Feb 2020
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Bringing this back from the dead…
I spaced my crossmember down and I am so close, but the hood is hitting. So I think a 4 bolt TB is my next step like MuhThugga suggested. I’ve done a little searching and it sounds possible, but I will need a conversion harness. Im not trying to be lazy, just curious if any of you all have had luck with the conversion harnesses they sell to go to 4 bolt? I can do my research and make pins match, but do these harnesses have something else in them other than making 2 connections match up?
I spaced my crossmember down and I am so close, but the hood is hitting. So I think a 4 bolt TB is my next step like MuhThugga suggested. I’ve done a little searching and it sounds possible, but I will need a conversion harness. Im not trying to be lazy, just curious if any of you all have had luck with the conversion harnesses they sell to go to 4 bolt? I can do my research and make pins match, but do these harnesses have something else in them other than making 2 connections match up?