Down to the nitty-gritty on my wife's 92 RS. Out with the wheezing 197K mile TBI engine and in with a carbureted 350. Now I'm stuck. I can't get my old stand-by adjustable throttle cable/TV cable bracket any more. I think they stopped making them or something.

I want something that actually fits and works. I don't want to swap out either the stock throttle or TV cable to get this accomplished. I just need an adjustable bracket to hold them both and with enough adjustement range I can get them working correctly.

Standard Holley 4160 carb sitting on an Edlebrock Performer intake. Nothing special or weird.

What I'm NOT going to use:

Cheap chrome adjustables that bolt on the back of the driver's rear carb stud. They might fit but they're garbage- they bend up like salt water taffy.

Holley non-adjustable bracket that bolts to same stud. Plenty beefy but it obviously isn't designed to work with the stock TBI cable length- not even close.

Mr. Gasket/Trans Dapt adjustable bracket that bolts to the two rear intake bolts. What a piece of garbage. The TV cable bracket would be practically laying on the valve cover rail.

Who's got my bolt-on answer?

 

I swapped from tpi to carb and used a holley bracket. My carb is a holley 3310. I used a throttle cable off a tbi car and it works fine. The stock tpi TV cable works also.

 

Can I ask which Holley bracket you used, specifically? Picture/part number?

 

Yeah no problem. Here is the link for it at summit.
Holley 700R4 Kickdown/throttle bracket

This is the exhact on I used. Worked great!

And like you said its real sturdy.

 

That's odd. I tried that exact bracket and it didn't even come close to working with the stock TBI cables. At WOT on the pedal I was only getting maybe 50% throttle at the carb. The throttle cable attachment point at the bracket was easily an inch or more too far forward. Ditto the TV cable (which I could have worked around, but there's no way to work around a throttle cable that's too long for the bracket).

Can I ask what year TBI throttle cable you used?

I just today rigged mine up with a cheap, junk Spectre adjustable thottle/kickdown cable bracket that bolts to the rear corner bolt of the carb. I got everyting to line up OK, but my expereince in the past is that they are just too thin and weak to take much abuse. Eventually they always bend. This is definitely a temporary solution.

 

I know Edelbrock makes a bracket that bolts to the rear of the intake, under the driver's side rear intake bolts, similar to a factory bracket. now if I can just remember where I saw it....

 

not to hi-jack your thread or anything but I am helping a buddy of mine with this kind of swap. Did you guys switch distributors when you did your swap?

TBI is a lot different then when I did my TPI swap to carb.

 

Yes, you have to switch to a non-computer controlled distributor.

I just used an earlier mechanical/vacuum non-computer controlled large cap HEI. The only modification required to use it is to cut off the factory coil connector (TBI engines use external coils with special connector fittings on the end) and crimp on individual power and tach connections like a big cap HEI uses. The big pink wire gets attached to the BATT/12V+ connection on the distributor, the smaller white wire goes to the TACH connection to run your tachometer.

 

Check out bowtieoverdrives.com they have custom made brackets for the different types of carbs used. They will be able to get you the proper brackets and instructions for the proper adjustments.

 

cc- thank you. That's the first really NEW suggestion I've gotten so far that I haven't already tried myself. I'll get in touch with them for sure.

 

i dont know if its stock or not with CFI or whatever, but for my throttle cable i have this weird piece:

(Dont mind the purple or how its hooked up.....its been changed)

 

Well, I grabbed a cable off about a 86-88 car. The motor was gone, so I assume it was a TBI car. To short for a TPI motor.

I did end up having to trim the black sleeve between the bracket and the carb. I got to the track and found the carb wasnt opening all the way. Seems to be fine now.

Sorry I cant help more. good luck.

 

I also used the holley bracket. It worked perfectly. No complaints there.

Both my stock TV and stock accelerator cable worked great.

 

Thanks Damon for the info, now what should you use for a 12 volt source for the fuel pump?
We are having a hard time keeping the fuel pump primed. If we run a straight 12 volt from the battery the fuel pump runs fine.

 

I ran mine to the 12v source at the windshield wiper motor. Probably not the best place, but it was close to the wiring harness and the motors 12v source runs through the fuse box.

I need to hook it up somewere else and wire in a hidden switch.

 

Do I need to run a wire all the way back to the pump itself or can someone help me out with the wiring part of it? I just can't believe that TBI is this much different then my TPI was. The TPI conversion is much easier.

 

I ran it to the fuel pump relay on the firewall. I just found a 12v source that worked only when the key is on. Need to check the wiring diagram for the TBI car. Find the wire going to the relay that requires the 12v source. Splice from the 12v source to the relay wiring.

 

We just don't know what wire is what. I think we found the right relay but we are not sure. so what your saying is that we need to run the fuel pump wire to a switched 12 volt source right?

 

Why cant you just buy a relay, Wire the pump to the relay and wire the relay to a key on source. This way you dont have any switch to worry about or any tapping into some other source to worry about. The pump will get its main power from the relay. The relay will be connected to the battery. All it will use the key on source for is a turn on , like an audio amplifier.

This is how my aftermarket fan switch is wired in. I did this after frying several switches.

 

Yes. I found the wire I needed using the wiring diagram in my haynes or chilton manual.

 

We got it all taken care of ......thanks for the help

 

no problem, anytime.