tbi spacer?

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tbi spacer?

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Blazer Forums >> Mechanical & Maintenance >> General Tech Help >> 1st Gen (1983-1994) Tech >> tbi spacer?

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tbi spacer? - 3/22/2008 8:13:55 PM

92 blazin

Posts: 21
Joined: 11/18/2007
Status: offline

i have a 92 s10 blazer qitha 4.3l non vortec and was wondering if a tbi spacer really inproves gas millage and performance and is it worth getting one?

Post #: 1

RE: tbi spacer? - 3/23/2008 2:08:14 AM

neo71665

Posts: 311
Joined: 12/18/2007
From: rison AR
Status: offline

simple, no, no, and no

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1987 s-10 blazer 4x4, 2.8, 700r4, np207, 3.73 gears with a few mods.

(in reply to 92 blazin)

Post #: 2

RE: tbi spacer? - 3/23/2008 4:35:30 PM

swartlkk

Posts: 14530
Joined: 5/1/2005
From: Waterloo, NY
Status: offline

The fundamental theory behind the use of a throttle body spacer is to lengthen the intake runner to shift the torque curve lower in the RPM range. An engine with a torque peak high in the RPM range can benefit from a throttle body spacer. If an engine already has its torque peak low in the RPM range, or has an almost flat torque curve, there is no benefit. All of the 4.3L v6 engines fall into the later category.

I had ones CNC cut for my old 3.5L Intrepid and gained a solid 2mpg with them. This engine had very little low RPM torque and showed decent benefits from the addition of the spacers.

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Kyle-

04 Rainier
My Restoration Projects
Please Do Not PM for Tech Help

(in reply to neo71665)

Post #: 3

RE: tbi spacer? - 3/23/2008 4:59:19 PM

strong blazer

Posts: 71
Joined: 1/26/2008
Status: offline

well i have one on my 91 4dr 4.3 and my gas mpg didnt really change but i did get little extra thrust when i installed it with

after market breather like this one so it could suck more air in to the throttle body my throttle bodspacer is by airaide

_____________________________

edlebrock intake&cam
640 cfm holly thorttle body airaid throttle body spacer
chip upgrade

(in reply to swartlkk)

Post #: 4