Throttle Body Spacer

Throttle Body Spacer

Postby 8AD A5TR0 [OP] » September 2nd 2015, 5:39am

Hi everybody :)

Anyone have any experience with installing a throttle body spacer to their 4.3L Z engine? Some of the guys at work are telling me they're sometimes not worth putting on and recommended I check with others before installing one. Any tips? Please advise. Thanks!
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Re: Throttle Body Spacer

Postby Sailing_Faith » September 2nd 2015, 6:55am

Love to hear the replies..... I suspect some will swear to 50+HP...
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Re: Throttle Body Spacer

Postby 97cargocrawler » September 2nd 2015, 8:12am

I installed one years ago. I did the butterfly valve restrictor flap removal at the same time. The shiny aluminum alone added 50hp. My perception added another 50hp but I lost all those gains with 35" tires so my van still just put...put..puts along. Without the throttle spacer...who knows. It does help counteract the body lifted intake to air cleaner box height difference. That adds another 10hp.
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Re: Throttle Body Spacer

Postby chevymaher » September 2nd 2015, 9:21am

I ported my intake made it a single plane. Basically what the throttle spacers do.
I did it at the same time I ported the heads and exhaust, and a cam. So whatever gain was combined with other things.

Now i have that intake and exhaust on the merc. People think I am full of it. You got to line up next to me, or ride in it to make up your own mind. Once you see it in person you are a believer.
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Re: Throttle Body Spacer

Postby Vandiction » September 2nd 2015, 1:18pm

Dyno proven: no gains.
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Re: Throttle Body Spacer

Postby chevymaher » September 2nd 2015, 1:42pm

Vandiction wrote:Dyno proven: no gains.

Don't know where your getting your information. But in independent test in the 25 runs I saw there was always a gain. Mainly in mid range torque with a small HP increase.

Results varied by type of engine and intake system. 5-20 lb torque gain with a equal HP gain. It also states everywhere this mod does better in connection with other mods. Exhaust and cam.

Cpi type had smallest gains. But dual plane systems like mine had definite larger gains. Mainly due to the single plane effect rocking the torque curve higher.

These test were done on everything 4 cylinder nissans to V-8 corvettes. Always the same results. In one report they did say it would remain relatively the same without other breathing improvements in other areas. But even in their test the car gained in both areas.
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Re: Throttle Body Spacer

Postby markmitch » September 2nd 2015, 2:59pm

Chevymayher is right if you add a better muffler possibly a better breathing cat converter along with the spacer you will see more, simply put what comes in must go out. when I put my V8 in I installed a free flowing single 3 inch exhaust so later (after smog) I can improve breathing on the other end (intake) My suggestion would be a better Y pipe like the one shown-comes from Jegs Magnaflow 10768 - Magnaflow Tru-X, T, U, Y Crossover Pipes welded into the stock Y pipe I plan on this mod later myself.
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Re: Throttle Body Spacer

Postby 97cargocrawler » September 2nd 2015, 4:53pm

Like anything else, one simple mod usually does nothing notable. You either go all in and really modify and enhance the performance as a package deal, or just forget it. There is no single bolt on accessory that's gonna make your van move faster.

I modified everything but the block, including the computer.
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Re: Throttle Body Spacer

Postby Lumpy » September 2nd 2015, 5:55pm

97cargocrawler wrote:Like anything else, one simple mod usually does nothing notable. You either go all in and really modify and enhance the performance as a package deal, or just forget it. There is no single bolt on accessory that's gonna make your van move faster.



I took out the crappy Autolite plugs in my Honda and installed NGKs. Only saw about 15 HP increase. Then I added a bigger tail pipe stinger to get the exhaust gasses out and it really took the HP up. I estimate about 35 HP increase.


^^^ Above is an actual quote from a post in a Honda forum.


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Re: Throttle Body Spacer

Postby Astrofarian » September 4th 2015, 6:18pm

Lumpy wrote:
97cargocrawler wrote:Like anything else, one simple mod usually does nothing notable. You either go all in and really modify and enhance the performance as a package deal, or just forget it. There is no single bolt on accessory that's gonna make your van move faster.



I took out the crappy Autolite plugs in my Honda and installed NGKs. Only saw about 15 HP increase. Then I added a bigger tail pipe stinger to get the exhaust gasses out and it really took the HP up. I estimate about 35 HP increase.


^^^ Above is an actual quote from a post in a Honda forum.


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His "bigger stinger" was only effective because he didn't notice the big horking potato his next-door neighbour pounded into the exhaust! I "hear" they can be extremely restrictive :whistle:
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Re: Throttle Body Spacer

Postby Lumpy » September 4th 2015, 9:48pm

Astrofarian wrote:
His "bigger stinger" was only effective because he didn't notice the big horking potato his next-door neighbour pounded into the exhaust! I "hear" they can be extremely restrictive :whistle:
-Mike-


They don't call them "Cantelope Shooters" for nothing.


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