screw size tbi throttle body shaft

[hsga]

hi i'm new to the forum. i have a 87 r10 with a 5.7 motor and throttle body ignition. the base plate on the tbi needs bushings and i was going to try installing them myself. does anyone know the screw size for the shaft butterflies? is it the same as quadrajet screws?
thanks for any advice

 

[1987 GMC Jimmy]

I'm not sure, but if you want, try texting this number and asking.

217-473-4998

That's SPR Performance out of IL. I sent my TBI unit there to have them do the bushing because it was bad, and I didn't want to screw it up. They charged fifty, but I don't know what it'd be now. They should know, though.

 

[hsga]

great - thanks very much

 

[Charlie]

 

[hsga]

follow-up - i sent my base plate off to spr performance and they installed bushings - they did a very clean job, the shaft actuates like new - reasonable price and fast turnaround, very impressed

 

[1987 GMC Jimmy]

follow-up - i sent my base plate off to spr performance and they installed bushings - they did a very clean job, the shaft actuates like new - reasonable price and fast turnaround, very impressed

That's the better route right there. They build some really neat stuff over there, but I was happy with the same job they did for me.