HSR throttle cable
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Joined: Dec 2008
Posts: 209
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From: Aurora CO
Car: 1988 GTA Trans Am
Engine: HSR 350
Transmission: 700R4
Axle/Gears: 3.27
HSR throttle cable
hey well i did the HSR swap and now the throttle cable isnt pushin the rest of the stuff to the adjusting screw on the throttle body anybody kon how to fix this?
Joined: Sep 2004
Posts: 5,906
Likes: 240
From: Chicagoland Suburbs
Car: 1989 Trans Am GTA
Engine: LT1, AFR 195cc, 231/239 LE cam.
Transmission: M28 T56
Axle/Gears: 3.23 10bolt waiting to explode.
Re: HSR throttle cable
What "Stuff"
The throttle cable does not PUSH anything, it PULLS the blades open.
My stock cable worked just fine with my HSR. I had the nautilus style throttle body, so I had to grind a bit and bend the TB just a hair to make it clear the fuel rail.
Joined: Apr 2005
Posts: 7,736
Likes: 14
From: Not in Kansas anymore
Car: 82 Z28
Engine: 383 SP EFI/ 4150 TB
Transmission: T400
Axle/Gears: QP 9" 3.73
Joined: May 2005
Posts: 972
Likes: 11
From: Winnipeg, Manitoba. Canada
Car: 1989 T-Top GTA
Engine: 5.7L TPI> 6.2L
Transmission: 700R-4
Axle/Gears: 3.27
Re: HSR throttle cable
My throttle cable didn't seem "long enough" after my HSR swap either.... and my throttle body blades didn't close all the way..... so I put a stong "carb type" spring to pull it shut. It works and gives me a great pedal feel.
Some people will bend the bracket @ the gas pedal alittle bit to give the throttle cable "More Length" I never bothered to look there....
Hope that helps.
Some people will bend the bracket @ the gas pedal alittle bit to give the throttle cable "More Length" I never bothered to look there....
Hope that helps.
Thread Starter
Member
Joined: Dec 2008
Posts: 209
Likes: 0
From: Aurora CO
Car: 1988 GTA Trans Am
Engine: HSR 350
Transmission: 700R4
Axle/Gears: 3.27
Re: HSR throttle cable
ya exactly wat GTA Sammy said the throttle was long enough to hold the lever to hold everythin against the adjusting screw so it'll hold the throttle bottle where it should be.
wat did u connect the "carb type" spring too?
wat did u connect the "carb type" spring too?
Joined: May 2005
Posts: 972
Likes: 11
From: Winnipeg, Manitoba. Canada
Car: 1989 T-Top GTA
Engine: 5.7L TPI> 6.2L
Transmission: 700R-4
Axle/Gears: 3.27
Re: HSR throttle cable
Pictures are worth a thousand words.....
I'll post a picture within a couple of days.... Work tonite, 4 Wisdom teeth removed in the morning....
Had to drill a hole in the bracket though....
I'll post a picture within a couple of days.... Work tonite, 4 Wisdom teeth removed in the morning....

Had to drill a hole in the bracket though....
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Joined: Sep 2004
Posts: 5,906
Likes: 240
From: Chicagoland Suburbs
Car: 1989 Trans Am GTA
Engine: LT1, AFR 195cc, 231/239 LE cam.
Transmission: M28 T56
Axle/Gears: 3.23 10bolt waiting to explode.
Re: HSR throttle cable
If you need that spring to help the throttle blades return to the full closed position its likely that you ether have flat spots or wear on the throttle blade shaft, or the spring is too weak to return it to the closed position.
Check the throttle bracket for play in the shaft. If it rotates smoothly, and doesn't seem to catch on anything its likely that the spring could be worn out.
*Whoops*, saw the pic, and though the original poster uploaded it. Though my advice would still be valid for him, if he was having that problem.
Check the throttle bracket for play in the shaft. If it rotates smoothly, and doesn't seem to catch on anything its likely that the spring could be worn out.
*Whoops*, saw the pic, and though the original poster uploaded it. Though my advice would still be valid for him, if he was having that problem.
Thread Starter
Member
Joined: Dec 2008
Posts: 209
Likes: 0
From: Aurora CO
Car: 1988 GTA Trans Am
Engine: HSR 350
Transmission: 700R4
Axle/Gears: 3.27
Re: HSR throttle cable
well the thing is that it worked fine just before the swap with no problems, but after i switched to the HSR it gave this problem. so thats y im thinking it could be the swap that caused it not the actual throttle body it self. maybe im wrong but thats y i came here to find out lol
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Joined: Nov 2001
Posts: 2,266
Likes: 37
From: Canada,Ont
Car: 1987 TransAm Ttop
Engine: 2005 LQ4
Transmission: Ls1 T56
Axle/Gears: 3:54
Re: HSR throttle cable
I have the exact same issue with my swap,Ive found that depending on how the throttle cable was routed made a difference in how well the blades would close.I also elongated the throttle cable bracket holes to allow more adjustability instead of using massive strong carb springs and this solved my throttle issue but now my concern is if it will interfere with the tv cable adjustments.I find my car shifts too early just slighty.
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