Hey guys I just picked up a Holley 52mm TB. And as usual the minute I got it I see posts about people not liking them too much. I usually ask about everything I buy here on the board, but Holley has always been a leading name in carbs so I figured they would be the same for TB's also. OOOOPS. ASSUME ***---.
Whatever no use crying over burnt bills. Anyway let me know.

thanks

 

No problems for me

 

No personal experience, but I've heard problems about the throttle blades fitting poorly.

 

I've got a Holley 58 MM throttle body. Performance wise it seems to work good. The only problems I've had was, I had to adjust my cruise control cable, so my throttle blades would fully return, and I had to slot my TPS sensor holes to get the correct voltage when I bolted it to the holes drilled in the t-body.

Frank

 

How did you adjust your cruise cable and what the hell is TPS holes.

 

The cruise cable has an adjustment "button" near the mounting bracket.

The Throttle Position Sensor (TPS) bolts to the throttle boby, and is activated by the throttle blade shaft. It bolts on with 2 bolts. Most GM TPS sensors are non adjustable, so I had to make mine adjustable by slotting the holes. Proper TPS voltage is .5 V at idle, and 4.5-5 V at WOT. Before I slotted mine, I had .28 V at idle, and 3.6 at WOT. TPS is a little more important on yours than it it on mine, because it also controls you transmission shift points (mine is a '93 with a 700 trans in it). Mine wouldn't even idle until I corrected the problem.

Frank

 

What was the purpose of slotting the holes and how did you do that?

 

Slot the holes to rotate the sensor until you get the right reading. I used an air grinder with a round cutter, but you could do it with a round file, or a dremel. It took me all of about 10 minutes to do it.
You have to your TPS with either a volt meter, or a scanner with Data capability.

Frank