Making a large single TB work with FAST

[turbo_bu]

I am contemplating changing from a 4 barrel throttle body to the more common large single throttle bodies in order to reduce air flow losses. My concern is what I would have to do to my FAST system in order for everything to still work. The main thing which I am not sure of is the TPS and the IAC provisions.

I believe that the 4 barrel TB I have is an edelbrock one. The IAC is the GM style one which is shown in the FAST catalog. The TPS uses a small round connector which I have seen on some of the older GM TB engines though it may have also been used on many other engines too. I know the GN cars use a TPS which has a 3 pin flat weather pack connector. This is similar to the one I have on my LT1.

If I go with a Wilson / FAST / Accufab 90 mm TB will I have to use a Ford TPS? What style of connector does it use? I have read on the Accufab sight that you can buy a block to retain the use of a GM IAC. Does the Wilson or FAST designs also require buying an adapter? Would any of these be a plug and play swap or would I need to purchase a Ford TPS connector and have to wire it into my FAST harness?

 

[Ricky Trussell]

Checking in on this.
I am going from a four barrel to a single also along with a turbo. I was told to get accufab for fox body rustangs but I was wondering if the later GM LS1 type would work. I would like the IAC and tps to be GM.

 

[Superskwrl]

The TPS is available from FAST with the correct connector, to bolt to the Ford style TB

The IAC motor screws into an adapter, the 1 FAST makes i think is 2 piece's 1 of which is cast and the IAC screws into.

I have the DFI iac adapter which is billet and nicer imo

Again this is on my Ford stuff, so chevy stuff may be different ?

 

[berrelauto]

In order to use a Ford style throttle body, regarless of manufacture, with a FAST system you will need a Ford TPS with a GM connector, an IAC adapter, and a GM style IAC. We sell all of the above pieces.

 

[turbo_bu]

Can you ball park me the price on these? (PM me if you don't want to post actual prices)

I already have the GM IAC motor with my FAST system, so the main thing I would need would be the IAC adapter and Ford TPS w/ GM connector.