Bobby Suth

iTrader: (2)

I got a 305 TBI off a truck to put on my 89 rs. The tps is different. The connectors not the same. Can I get a connector and it work

RBob

iTrader: (1)

Yes, you can change the connector. SPR Performance also sells an adapter cable.

One thing to check before you swap that TBI, check that the arm and button is there to connect the TV cable. From my understanding the TBI units used with the E automatics don't have the TV connection.

RBob.

Bobby Suth

iTrader: (2)

Going into a 5 speed rs. Are all 88 to 92 throttle body's the same? There not mad and ma's are they

Schurkey

No.
Huh????

Ghettobird52

No as stated above the main difference between the Throttle bodies is the Throttle cable/TV cable hook up and the TPS sensor. Ive also noticed some miss one of the front vacuum ports.

Schurkey

Vacuum nipples and throttle arms, as said. Also IAC passages, (which also changes the base gasket needed) and of course the obvious fuel injector GPH ratings to suit the different CID (2.8, 5.0, 5.7, 7.4) and expected use (consumer vs. Police, for example.) Most of the injectors are intended for 9--13 psi fuel pressure, and usable to maybe 20 psi, but some of the 454 injectors are intended for higher pressure--although I think that's post-'92. Then there's the throttle blade size difference between the 454 TBI vs. the other 2-barrels.

I don't know what year the sensor connectors changed. There's the older flat-3-pin for TPS vs. the new round 3-pin; and you've already seen the IAC connector difference.

I have some of this documented with photos. I can post 'em if anyone cares.

Even so, there isn't 1/10 the number of variations that there would be in the carburetor era.

Bobby Suth

iTrader: (2)

Sorry,that was suppose to have read,maf and mas, as with the tpi systems change from pre 1990 and after. These tablets change stuff I type in thinking I don't know what im doing