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383STROKER
Noob
Blogs: 0 (Add)
Vehicle: 1987 Chevy Silverado 1500
Joined: Feb 2008
Member # 4081
From: Jeff City Missouri
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BIGRED Duramax
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Vehicle: 06 2500HD CCLB Duramax
Joined: Jan 2007
Member # 1879
From: Scaggsville MD
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 Posted
- February 6 : 6:38a
| | I had a spacer in my 92 3/4 ton w/454 tbi. It was a trade-off, I gain faster response time at lower speeds but lost at higher rpms, in other words it moved the the power curve closer to zero. It was nice pulling the 5th wheel until the long slow grades up the hill,(like cajon pass or the 15 just outside vegas) then it really sucked. | |
Jason
Writer/Photo/Video
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Blogs: 954 (View)
Vehicle: 08 Mustang GT
Joined: May 2005
Member # 72
From: San Diego CA
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Posted
- February 6 : 11:41a
| The throttle body spacer will do nothing for your truck, at least you will not notice any gains. I had one on my truck a couple years ago (5.4 v8) and it didn't show any improvement but make alot of noise.
Here's an article we posted back in 05 about them. You can find it under "Articles" in the menu bar, and "Reviews"
http://www.truckblog.com/story-444-fuel_economy_myths_throttle_body_spacers |
Edited by - Jason on February 6 11:45a |
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383STROKER
Noob
Blogs: 0 (Add)
Vehicle: 1987 Chevy Silverado 1500
Joined: Feb 2008
Member # 4081
From: Jeff City Missouri
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Posted
- February 6 : 12:57p
| | Thanks for the replies. I read that article, but it still seems like people running early TBI's like my 87' (which I'me pretty sure was the first year that Chevy introduced the TBI on their trucks) have all seen substancial gains in low-end torque and mid range hp. I'm usually not a sucker, but it really sounds to me like it would really work!! Any more thoughts????? | |
Mort
Nitrous Member
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Vehicle: 2003 OshKosh S-Series 6x6
Joined: May 2005
Member # 86
From: Mortville WA
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Posted
- February 7 : 10:26p
| Jason's experience was with Fords. My person experience with TBI engines is that they do work, because a TBI is basically an electronically controlled and metered carburetor. MPFI engines like the Ford 5.4 will feel no difference, because another 1" in the air stream isn't going to mean much. When a fuel/air mixture is being moved 1" away, though, it means a bit more, especially when it has a vortex being created by the spacer. More air movement = more gooder.
Personal experience: 2000 S-10 Xtreme 4.3L 4A, the spacer noticeably increased power from about 2000rpms to about 3000, which is about the range you would drive in normally. Your mileage may vary, but I do recommend them in TBI engines. | |
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Throttle body spacers??? ---2
